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For R407C Refrigerant

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3. nennen nnne nnns nsns nasa nnn 31 FUSANO tC one ee 32 1 Installation method of S W 2 Items to be confirmed before flushing operation 3 Starting and finishing of flushing operation 4 Mounting method of low outdoor temperature hood IV Work Procedure at Oil Inspection 45 1 inspection after mineral oll recovery 45 1 Cil sampling method 2 Measuring method and judgement of refractive index 3 Measures to be taken at oil inspection No Good V Mineral Recovery Operation Data Reference 53 1 Standard data During flushing operation 53 Service Maintenance Inspection Construction of Oil Trap Kit enhn 55 1 External appearance with panel removed sees nnne nnne nnns 95 E decree 56 CONTO DO Me m 57 Electrical Wiring Diagram 58 Refrigerant Circuit Diagram 2 2 0 02 59 1 Entire refrigerant circuit diagram at mineral oil recovery 59 2 Refrigerant circuit diagram of oil trap kit
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7. In case with MELANS used When MELANS is used display on the remote controller will disappear at the group registration of the indoor unit and local remote controller If HO does not disappear after the registration check the items 12 14 in the Cause column Symptom 88 appears on re mote controller at registration and access remote con troller Cause Check method amp Countermeasure Generates at registration and confirmation a Confirm the address of unit to be coupled 1 Erroneous address of unit to be coupled b Check the connection of transmission line 2 Disconnection of transmission line of unit to be c Check the transmission terminal block coupled No connection voltage of unit to be coupled 3 Faulty circuit board of unit to be coupled Normal if voltage is DC17 30V 4 Installation miss of transmission line ii Check the item d in case other than i Confirmation of different refrigerant system controller d Confirm the power source of outdoor unit 5 Disconnection of power source of outdoor unit to be to be coupled with the unit to be confirmed confirmed e Confirm that the centralized control trans 6 Disconnection of centralized control transmission line mission line TB7 of outdoor unit is not TB7 of outdoor unit disconnection 7 Power supply connector CN40 is not inserted into f Confirm the voltage of centralized control centralized control transmiss
8. 1 Capillary SV6 Selector valve and SV1 Bypass valve This solenoid valve opens when energized Relay ON a Charge nitrogen gas and energize the solenoid valve SV6 after opening the ball valve BV2 After energizing confirm if the pressure value goes up 1 After removing the tamper proof lid open the ball valve BV4 to discharge nitrogen gas gt The SV6 is normal 2 Close the ball valve BV4 and open the ball valve BV1 and slightly escaping and flowing noises of nitrogen gas are audible The capillary CP is normal 3 Energize the solenoid valve SV1 as the above state remains as it is and nitrogen gas escapes a little more than the above The SV1 is normal 4 Discharge nitrogen gas and put the tamper proof lid back 2 SV2 Bypass valve This solenoid valve opens when energized Relay ON a Charge nitrogen gas and energize the solenoid valve SV6 and SV2 after opening the ball valve BV2 1 The gauge pressure of pressure gauge shows the same as the charged pressure The SV2 is normal 2 Discharge nitrogen gas 3 SV3 4 and 5 Selector valves This solenoid valve opens when energized Relay ON a After opening the ball valve BV3 charge nitrogen gas and energize the solenoid valve SV3 1 The gauge pressure of pressure gauge shows the same as the charged pressure The SV3 is normal 2 Discharge nitrogen gas and close all of the ball valves BV1 4 3 Discharge nitrogen gas b Af
9. 114 Procedure for maintenance and checking of the portable refractometer 118 4 Cautions when replacing the outdoor unit main 118 X Information on Rating 119 54 l Construction of Oil Trap Kit 1 External appearance with panel removed 1 Front view Handle for transport Pressure gauge Knob Caster stopper side Cil recovery service valve Caster with stopper swivel side 2 Rear view 4 lt lt Handle for transport cm Knob 55 2 Refrigerant circuit 1 Front view Control MEM ER Y S D e Bypass valve SV2 service valve outdoor Refrigerant service Refrigerant service valve BV3 valve BV2 extended piping outdoor Refrigerant service valve BV4 extended piping Refrigerant service valve BV4 lt extended piping gt 2 Side view The switching valve SV6 is indicated in 3 Control box Switching valve SV4 c E Switching valve SV7 Switching valve SV3 e Strainer ST5 EM m Switching valve Tid 4 __ Recovery vessel 3 0 54 Pressure sensor PS1 y pus Recovery vessel 1 53 sepa
10. eei 60 IV Function List of Major Parts 61 T 61 o RE m 61 28 1 82 m x 62 E E E 63 V Control of Mineral Oil Recovery Operation 64 Te rej 64 2 ete qe ecl ELS 64 SNB 5 8 eso qiio 65 4 Oil return control Electronic expansion valve lt gt 66 PERO MO OCR ETT t 66 6 Sub cooling coil control Electronic expansion lt LEV1 gt 66 7 Detecting circulation composition CS circuit venam tcu 67 8 Distributed washing control and flow rate control Indoor 67 2 i MEC ET a 67 VI Operation Dusasukv I dC RI 68 t Flushing omm 68 2 69 VII Troubleshooting NR __46 6__ 70 5 555126471245 05 2 ESTEE 70 2 Self diagnosis and countermeasure for malfunction a
11. wog gt 4 16 6 SAA bc 9109 Jo 6 lt JOJOWEIP UOISSIUISUEJ 1 gt QUI UOISSIUISUEJ JOOPINE eui UOISSILUSUBJ YOOUD Fig B Usable wire diameter For connection with MA remote controller Transmission line farthest length m Number of indoor unit For connection with M NET remote controller Transmission line farthest length m Number of indoor unit System Design pp 10 1 Combination of units 10 2 Temperature range allowing mineral oil recovery operation 10 3 MEMS be observed ec 10 Product Specification M cm 11 ls CDU co MU c 11 2 11 2 External amp sc T 12 NDS Bo 13 Wm 13 2 External CUMS OM TE TO EO ETE 13 Outline of Flushing Operation 222 2 14 l Outline of Equipment 1 Combination of units The connectable units
12. 21 1 Recover liquid recovered oil with an oil pan and the like Countermeasure by Confirming Inner Pressure of Oil Trap Kit 1 In the case of 0 049MPa or less A leak exists it must be located and repaired After repairing the leakage inside the oil trap kit confirm successful airtightness test and evacuation After evacuation charge refrigerant 0 5kg 2 In the case of 0 294MPa or more Confirm the outdoor temperature sensor TH6 of the outdoor unit Heference to chart below 1 Located at lower right side of line Although this does not indicate abnormality but causes increase in the inner pressure during storage leading to possible danger Recover refrigerant to lower the pressure until it reaches less than 0 294MPa For the method of refrigerant recovery refer to IX 2 2 3 Refrigerant recovery method 2 Located at upper left side of line This indicates the existence of liquid refrigerant Liquid seal may be formed at storage Recover erant to lower the pressure until it reaches less than 0 294MPa same as above For the method of refrigerant recovery refer to IX 2 2 3 Refrigerant recovery method At recovery measure the recov ered quantity If it exceeds 0 5kg charge the excess quantity additionally when confirming operation In addition check the operation of the solenoid valves If they are faulty replace the solenoid valves confirm airtightness and execute evacuation After evacuation charge ref
13. 4 Be careful that the indoor unit fan operates during flushing operation Avoid working on the internal part of the indoor unit during flushing REPLACE MULTI montar REPLACE screen Clicking Flushing mode initiates flushing op eration monitor REPLACE Main screen ROUND 1 STEP 2 Below the Flushing mode button the remain ing time to complete the flushing operation and the estimated time required for re flushing are displayed As the remaining time only represents for the standard It may change during the operation 5 Caution 1 Operating sound may generate during the flushing operation This is caused by the switching operation of the solenoid vale not representing malfunction 2 Be careful that the piping flexible tube may be heated to high temperature during flush ing operation 4 Clicking OTK IC displays the monitor display screen of OTK and IC 35 REPLACE OTK IC OC PUHY P250YREM A Ver 02 03 0 Ope Mode Flush 52 OTK2 Tank 1 2 4 5 6 8 0 2 a 4 17 6 ites E EE ON Sv2 ON SvX OFF 5 4 SV amp 547 OFF PS1 314MPa VER 010200 Sv Sv SV3 5 4 SV PSI MPa VER SV3 SV4 SV5 5 15 o7 7 LEV2 TH17 gt
14. Is Tc 342 0C 0272 H1s 4 00 0 0000 SLEV 0000 Vde 565 V TH3 THSa 63 6 1 53 63LS 0 44 MPa 2154a 5 1 SV2 5 6 SV4 0 0 0 0 0 TH4 THSb Qjc SCo 241 21S4b SV5b SV22 SV32FAN2 SV3 5 78 10 Qih SCc 366 PUE I NT TH6 128 THHS 120 Fave 81 93 LPSave 044 THBOX SHb 15 2 NO ATAD GR QJ TH2 TH3 TD NO ATAD GR QJ THI TH2 TH3 TD Us HE ab abe keep e 9309070 n E CO PO Dem op UD Finishing of monitoring Main monitor Error history 99 After turning power source of OC and OTK off recover mineral oil inside the oil trap kit and re move the piping flexible tube between the out door unit and oil trap kit After connecting the piping kit field work execute evacuation After evacuation open the ball valve of the ex tended piping and OC that in order Then remove the replace tank and confirming it has no residual oil After completing the above work click OK A Caution Do not turn off the power source nor remove OTK before displaying the left screen A Caution 1 Before removing OTK discharge the recov ered mineral oil through the mineral oil recov ery service valve Dispose the discharged oil in the field The oil pan should be prepared in the field The job site is desired to be outdoor or a place with ventilating facility To
15. MITSUBISH Replace MUU Mineral Oil Recovery Work Manual For R407C Refrigerant This product is designed and intended for use in the residential commer cial and light industrial environment The product athandis Low Voltage Directive 73 23 EEC based on the following Electromagnetic Compatibility Directive 89 EU regulations 336 EEC e Pressure Equipment Directive 97 23 EC V INAYA AHNd IO PUIN nini e2ejdeg Please be sure to put the contact address telephone number on this manual before handing it to the customer MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Issued in April 2004 MEEO3K197 New publication effective April 2004 Printed in Japan Specifications subject to change without notice Cautions For REPLACE MULTI Installation Work Flow of installation work in the field Items to be observed Confirming the possibility of existing Please note that our Corporation is not liable to the reliability of existing piping refrigerant piping for reuse wiring and power system for reuse in relation with the gas leak of piping partially defective disconnection of wiring deteriorated insulation characteristic faults due to worn out system Confirming the possibility of existing For limitation on the refrigerant piping and applicable piping diameter check the control wiring for re
16. actuation failure of fan controller Refer to the page for the failure determina 2 The above 3 results in non control of dis tion of outdoor fan VII 4 3 charge temperature rise due to pulling in p low pressure air and the above 4 results in non control of discharge temperature 9 rise E 5 Gas leak between high pressure part and Confirmation of operating status by perform 5 low pressure part ing flushing operation 5 Malfunction in 4 way valve compressor failure and malfunction in outdoor sole noid valves SV1 and SV2 6 Malfunction in thermistor TH1 Confirmation of the resistance of thermistor IV 1 7 Input circuit error for thermistors on the Confirmation of the inlet temperature to the control board sensor with the PC monitor 1301 In the case of starting compressor first from 1 Inner pressure drop due to gas leak Refer to the page for the failure determina Abnormal low pressure stop mode including the time when the compressor starts next time at the time of starting compressor at the beginning and ending of a constraint on power distribution when the low pressure sensor indicates 0 098MPa just before compressor starts to operate the compressor must be stopped immediately Malfunction low pressure sensor Insulation wreckage Disconnection off of pin at connecting parts Breaking of wire Input circuit error for the low pressure of control board Co
17. 6 Failure in the input circuit on the main board of the high pressure sensor 79 Check codes Meaning Detection means Trouble factors Checking method and countermeasure 5301 ACCT sensor circuit failure Failure details No 115 When detecting abnormal values in the ACCT circuit just before INV starts 1 INV board failure Refer to VII 5 2 1 Checking of the failure detection circuit on the INV board 2 Compressor ground fault and IPM error Refer to VII 5 2 2 Checking of compressor ground fault and winding wire failure Refer to VII 5 2 5 Checking of the inverter circuit trouble DCCT sensor circuit failure Failure details No 116 When detecting abnormal values in the DCCT circuit just before INV starts 1 Contact failure Checking of contacts around the INV board connecter CNCT and DCCT side connecter 2 INV board failure Refer to VII 5 2 1 Checking of the failure detection circuit on the INV board 3 DCCT failure In the case of no problem with up to 2 replace the DCCT and check DCCT polarity 4 Compressor failure Inverter circuit failure Refer to VII 5 2 2 Checking of compressor ground fault and winding wire failure Refer to VII 5 2 5 Checking of the inverter circuit trouble 5 Compressor ground fault and IPM error Refer to VII 5 2 2 Checking of compressor ground fault and wind
18. Heplace tank PAC KP01RTK To lower the viscosity of residual mineral oil Mineral oil fluidity solution 20 2 Items to be checked before work Check method Content of checking Countermeasure Confirming the power ing of outdoor unit 1 LED display inside outdoor unit control box 2 Confirming the power ing time 1 Check whether outdoor unit is be ing powered 2 Check the insulation resistance between power source terminal and ground for over 1 1 Power the outdoor unit for over 12 hours 2 Power until the insulation resistance between the power source termi nal block and ground reaches 1 or more Confirming the closed ball valve of outdoor unit oil trap kit and the valve mounted to the extended piping 1 Confirming the closed ball valve of outdoor unit and the valve mounted to the extend ed piping 2 Confirming the closed ball valve of oil trap kit 1 Confirm the ball valve of outdoor unit is fully closed 2 Confirm the ball valve of oil trap kit is fully closed 1 Full opening of ball valve Check the valve operation by field piping work Refrigerant charge after flushing operation 2 Full closing of ball valve Confirmation of residual pressure inside oil trap kit using a pres sure gauge At no residual pres sure evacuate after confirming airtightness inside oil trap kit and charge refrigerant by O 5kg Co
19. OI Jua tion of low pressure sensor VII 4 1 Check codes Meaning Detection means Trouble factors Checking method and countermeasure 1902 1 When the pressure sensor detects in 1 Malfunction of indoor LEV Heating Confirmation of operating status by excess of 2 94MPa during operation the performing flushing operation compressor stops At this moment a Refer to the page for the failure determina failure no 1302 is displayed on the tion of LEV VII 4 4 screen 2 Operation failure in the ball valve Confirmation of the ball valve being fully 2 Apart form the pressure sensor when opened the pressure relay actuates at 2 94 dE MPa the compressor stops 3 Outdoor fan block motor failure and Checking of the outdoor fan 3 actuation failure of fan controller Refer to the page for the failure determina D Non control of high pressure rise by the tion of outdoor fan VII 4 3 use of fan E 4 Pressure sensor failure Refer to the page for the failure determina E tion of pressure sensor VII 4 1 o c 2 5 Input circuit error for the thermistor on Confirmation of the inlet temperature and the main board and pressure sensor pressure to the sensor by PC monitor 6 Slipping off of the connecter for pressure Confirmation of the inlet temperature and relay 63H and disconnection pressure to the sensor by PC monitor 21 Blown fuses F1 or F2 on the control Confirmat
20. The combination of the solenoid valve SV and flow rate control valve LEV during re flushing mode is as shown below Each valve is switched every 5 minutes except for a period time of 15 minutes after having started flushing mode and a period time of 12 minutes just before finishing flushing mode The switching frequency of each valve during re flushing mode varies in repetition according to the operation frequency of compressor and the low pressure 6315 of outdoor unit Flushing mode and recovery mode Re flushing mode and recovery mode recovery process refrigerant recovery LEV Indoor unit 160 2000 150 Pulse 2 160 2000 Pulse 1 The minimum valve opening varies according to the number of indoor unit in each group 2 At the time of non distributed flushing mode 9 Indoor unit fan control During mineral oil recovery the indoor unit fan operates intermittently at the time of the following operation 1 For 5 seconds after having started mineral oil recovery 2 During non distributed flushing mode LEV 150 3 While the oil trap kit SV1 during re flushing and recovery modes are in the state of ON except for 15 minutes after having started mineral oil recovery 67 Operation Flow Chart 1 Flushing operation At the time of flushing operation the following 4 kinds of modes are available 1 2 3 4 Flushing mode Oil recovery in the existing pipes Re flushing mode Carried
21. e Check the motor and electromagnetic switch Check codes Meaning Detection means Trouble factors Checking method and treatme 4121 Malfunction in counter measure device for higher harmonics wave Abnormal communication with Active filter PAC KB51AAC 1 For equipment without connect ing Active filter the connecting switch to Active filter is in the ON position e Switch the connecting switch to Active fil ter for outdoor unit Dip switch SW3 8 on the outdoor control board to the OFF po sition 2 Wiring failure Confirm if the power source wire is con nected to the terminal block for power source for outdoor unit Check the main board connecter CN51 the wiring between CN3S 3D and Active fil ter and the contact point at connecting parts 3 Active filter failure Failure detection of Active filter LED indication Check the detailed contents of LED3 to 5 on the Active filter board At the overhauling of Active filter be sure to wait for 10 minutes or more after pow ering off and confirm the CHARGE LED1 is being off and the charged volt age of the main capacitor is being suffi ciently low to proceed work further Failure contents OC LED3 lighting Over current Peak 60A or more OC LED3 blinking Slipping off of ACCT connecter AF board CN4 OV LED4 lighting Direct current bus over voltage 410V or more voltage shortage 300V o
22. 0C 10 C 20C 25 C 15kQ 9 7 6 4kQ 5 3kQ Checking resistance value V Control of Mineral Oil Recovery Operation 1 Initial control At power on the initial processing of the micro computer is carried out above everything else During the initial processing control process for operation signal is sent and after the completion of the initial processing it starts Initial processing means data arrangement in the micro computer and the initial setting of each LEV opening and SV The time required for the processing is about 3 minutes 2 Control of solenoid valves The solenoid valves include the bypass valves between high pressure side and low pressure side SV1 SV2 control of heat exchanger capacity valves SV3 SV4 low pressure control valves SV3 5 and refrigerant recovery control valves SV6 7 and these valves activate respectively as follows 1 The bypass solenoid valves SV1 SV2 All SV1 SV2 valves are opened in the ON position For P200 250YREM A Both the outdoor unit and oil trap kit are controlled in the same manner except for during recovery mode During refrigerant recovery The SV2 may be opened ON during NG mode according to the low pres sure 6315 of the outdoor unit Items SV1 SV2 At the start up of compressor ON for 4 minutes 3 minutes after flushing mode re flushing or ON for 15 minutes ON for 8 minutes when outdoor air temperature TH6 recovery mode recovery pr
23. oil together with refrigerant Stand it vertically for evacuation Valve 3 3 way joint Gauge manifold B After reaching a vacuum degree of 650Pa evacuate for 5 seconds more and stop the vacuum pump Valve 4 Then leave it for 5 seconds and Oil recovery confirm the vacuum degree does 8 valve B Wy Vacuum pump not rise 2 Ll Executing flushing again by 1 After evacuation close valve 4 before the vacuum pump and the high low pressure valve of opening valves 1 2 C the gauge manifold 2 Open the valves 1 2 of the ester oil kit for REPLACE MULTI valve 3 connected to the service check joint and the oil recovery service valve B 4 in total add oil operate for recovery per 1 time 1 pc open valves in the order of valve 3 connected to the service check joint valve 1 at the REPLACE MULTI ester oil kit upper part and valve 2 at the REPLACE MULTI ester oil kit lower part and oil recovery service valve B The additional charge takes about 20 minutes per piece The recovery time takes about 24 hours Hecovering oil inside the oil trap 1 At about 20 minutes after starting flushing operation close the ball valves 1 2 of the RE kit D PLACE M MULTI ester oil kit valve 3 connected to the service check joint and oil recovery service valve B 4 in total close valves in the order of the valve 3 connected
24. Checking of slipping off of pins at connecting 5 failure at connecting parts parts 5 6 Disconnection Checking of disconnection c S 7 Thermistor input circuit failure Check the inlet temperature of the sensor by on the main board the LED monitor If the difference in temperature between tected and actual is large replace the main board Detection of Open 207 or below 616kQ 5201 1 If the high pressure sensor detects 1 High pressure sensor failure Refer to the page of the failure determination High pressure sensor failure Outdoor unit 0 098MPa or less while the outdoor unit is operating it stops operation to be in 3 minute restart prevention mode If the high pressure sensor detects 0 098MPa or more just before restart the outdoor unit restarts 2 If the high pressure sensor detects 0 098 or less just before restart the outdoor unit stops operation irregularly At this moment an error 5111 is displayed on the screen 3 During 3 minute restart prevention mode LED in the intermittent fault check is carried out 4 For 3 minutes after the compressor starts during defrosting and for 3 mi nutes after the restoration of defrost ing failure detection is not available of the high pressure sensor VII 4 1 2 Inner pressure drop due to gas leak 3 Damaged wire cover 4 Slipping off of pins and contact failure at connecting parts 5 Disconnection
25. Inspection method Thermistor continued THHS inverter ra diator panel temp Heat sink Controlling inverter cooling fan by temp of THHS R50 17 B25 120 4170 Rt 17exp 4170 1 od 273 t 25 C 30 40 0C 10 C 20C 181kQ 105kQ 64kQ Checking resistance value Solenoid valve SV1 discharge suction bypass 1 Returning oil at starting 2 Suppressing discharge pressure rise 3 Equalizing pressure at stopping SV2 discharge suction bypass Bypassing of high low pressure at starting under low pressure SV3 4 Control of heat exchanger capacity AC220 240V Opens at powering closes at non powering Checking continuity with tester Electronic expansion valve SLEV oil return Adjusting liquid refrigerant oil returning from accumulator LEV1 SC coil Adjusting bypass flow from outdoor unit liquid piping at cooling Opening of DC12V stepping motor driving valve 0 480 pulses direct driving Same as indoor LEV But the resistance value differs from indoor LEV LEV refer to trouble shooting Heater CH1 crankcase heater Heating refrigerant inside compressor Cord heater AC220 240V 8890 45W Checking resistance value 4 way valve 2154 2 Oil trap Symbol function Parts code Switching cooling heating cycles Application AC220 240V Non power
26. SW3 10 Model OFF P200 ON P250 7101 Outdoor Capacity code error 1 The model name model name code of a Confirm the model name Model name unit Atailure indicated model indoor ne to be connected is out of the code of indoor units to be connected name of unit to be connected can 2422 2 Indoor hor be connected The allowable range of connection unit Model P20 P250 2 Setting of a model name capacity codes of b Confirm the switch for setting the model indoor unit heat storage tank unit and name Capacity code of indoor units and switch for setting SW2 is wrong heat storage tank units and switches SW2 for indoor controller board and SW1 10 for heat storage tank unit from which address originate The capacity of an indoor unit be con In the case of mismatching with a model firmed by means of the self diagnosis name correct the capacity code in the state function of outdoor unit SW1 operation that power sources for both outdoor units and indoor units are cut off 7102 Outdoor number 1 The number of units connected to the indoor Check if the number of outdoor units con unit and outdoor transmission terminal block nected to the indoor transmission terminal of unit to be connected A failure indicated when the number of unit to be connected to outdoor units is too many TB3 is out of the following limit number of unit Limit number of unit
27. Trouble phenomenon or checking codes Trouble factors Checking method and countermeasure A running indication is dis played on the remote con troller but some of indoor units do not operate The power source for indoor unit is not turned on No wiring between indoor units in the same group Indoor units are connected to the same group of Mr Slim models Blowout of the fuse on the control board of indoor units During mineral oil recovery operation A running indication on the remote control goes out im mediately after the indoor unit starts to operate The power source for indoor unit Main unit is not turned on Non conformity of grouping with system controller Blowout of the fuse on the control board of the in door unit Main unit The interlocking with Los snay can not be properly registered The power source for Losnay is not turned on For Losnay suitable for different refrigerant the out door unit suitable for different refrigerant is not turned on One Losnay is already registered to one of indoor units The address of Losnay is different The address of Losnay is not set yet Losnay is not connected to the transmission line The powering indication 6 is not displayed on the remote controller No elec tric supply to MA remote controller As for indoor units the remote control is not fed until the start up of both indoor and outdoor units is prop
28. port piping This figure shows the fully opened state Connection pipe Accessory Part name Detail Valve rod Fully close at shipment piping work air tightening and evacuating work Fully open after completing the above works Cap Copper packing Remove the cap and operate the rod valve Mount it at its original position after finishing work Clamping torque of valve rod cap 25N m or more Stopper pin The valve rod does not rotate over 90 Service port Use for the airtightness and evacuation inside existing piping in the field Use two spanners to open close Clamp ing torque 14N m or more Flare nut Use two spanners to open close with a clamping torque of 80N m Coat refrigerating machine oil ester oil ether oil or alkyl benzene a little amount on the flare contacting surface Connection pipe Mount the packing accessory firmly to the valve flange to avoid gas leak Clamping torque 23Nem or more Accessory Coat refrigerating machine oil ester oil ether oil or alkyl benzene a little amount on the flare contacting surface Proper clamping torque by torque wrench Caution Make sure to remove the connection pipe from the ball valve and braze it outside the unit Brazing it while mounted heats the ball valve which may cause machine trouble or gas leak Also the wiring inside the unit may be burnt Copper pipe OD mm Clamping torque N m 06 35 14 18 09 52 35 4
29. x OC PUHY P250YREM A Ver 02 03E0 Address 51 Power Ope Made Stop DF FR 0 5 5H TdSH 333 0 1 0 2 11 Sas TH12 Tc 342 0274 0 00 1 706 TH 46 o ss 20 AOC 0300 LEV1 0000 SLEV 0000 565 y 2 1 9 TH8 132 z 63HS 1 53 63LS 0 44 21548 Svi SV2 56 SVA aua 13 j 0 0 0 T TH4 Qic E SCo 240 2184b SV5b SV22 SV32FAN2 SV3 TH 5 265 ron MUI MIC TH6 128 THHS 125 Fave 0 00 LPSave 0 00 THBOX SHb 151 0 AT AD GR QJ THI TH2 TH3 TD NO ATAD GR TH2 TH3 TD NG mode Ue WE uo ieee 2 EUG 99 04 82 23 Main monitor 0M M Mc cu muc Mc Outdoor unit 51 Monitoring Hz F 117 2004 10 30 43 Clicking Error history displays the history of ab normality Displays the abnormality history both under mineral oil recovery and normal operation During mineral oil recovering the abnormality history under normal operation is not dis played Clicking OK returns to the main screen Clicking Help allows you to read the mineral oil recovery work manual in the form of PDF file Caution To read PDF file Acrobat Reader is required 4 Mounting method of low outdoor temperature hood Upon the request to install the low outdoor temperatu
30. 1 16 20 Items 1 Total number of indoor units 2 Total number of indoor units Lossnay with heater and humi difier for commercial use and network remote controller 1539 8 Total number of Losnay with heater and humidifier for commercial use and Lossnay Only when automatic ad dressing 4 Heat storage tank unit 2 In spite of automatic addressing MA remote control the address of outdoor units is set to 51 7100 For MA remote control an indica tion is displayed 3 The wiring for transmission line between out door units and heat storage tank units comes off 4 The transmission line for outdoor units comes off TB3 5 Short circuit of transmission line In the case of the above 4 and 5 indications on the remote control are as follows For M NET remote control No indication because the remote control has no its own power source For M NET remote control An indication is displayed 6 A failure in control board for outdoor units or heat storage tank units 7 Heat storage tank units are not energized 8 For ICE Yk system setting switch SW4 10 is not in the ON position 82 block TB3 is not beyond the limit number of unit 1 3 in the left column b Check the item 2 3 4 5 7 and 8 in the left column c Check if the transmission line to be con nected to the terminal block TB7 for trans mission line for central co
31. 6 6 10 Oil trap kit Over 450 4 9990 N Caution When installing the oil trap kit on a slanted ground or at a place directly exposed to the seasonal wind gust ensure it will not be blown over elf the oil trap kit does fall over it will damage the solenoid valves disabling the ability to perform flushing operation Refrigerant leak and personal injury may also occur 23 4 Refrigerant piping work 4 1 Piping connection before flushing operation 1 Piping connection to outdoor unit Connect the outdoor unit and oil trap kit pipe and wire by following the procedure 1 Turn off the main power source of the outdoor unit 2 Remove the service panel from the outdoor unit and oil trap kit piping cover and the side panel 6 screws in total 3 Confirming the service valves of the outdoor unit valves mounted to the extended piping and oil trap kit are closed and remove a piping cover Mount the replace tank to the oil trap kit Use the Piping 1 and 2 provided to the oil trap kit to mount the replace tank Do not lose the Piping 1 and 2 of the oil trap kit as it can be reused When using the copper pipe for general refrigerant piping connection can be performed without using Piping 2 by using the valve of the replace tank In the case of P200 250YREM A Left side panel upper Piping 1 Accessory Service panel Piping 2 Accessory In the case of P200 250YREM A A
32. After evacuation close the valve 4 before the vacuum pump and the high low pressure valve of the gauge manifold 2 Open the valves 1 2 of the ester oil kit for REPLACE MULTI the valve 3 connected to the service check joint and the oil recovery service valve B 4 in total and add oil by oper ating all indoor units for cooling or heating For P200 250YREM A per 1 time 1 pc additional oil charge open valves in the order of valve 3 connected to the service check joint valve 1 to the REPLACE MULTI ester oil kit upper part and valve 2 to the REPLACE MULTI ester oil kit lower part and the oil recovery service valve B The additional charge takes about 20 minutes per piece Changing the connecting position of valve 3 AC Executing oil recovery D Ec NND 1 After completing all oil replenishment close valve 3 connected to the service check joint 2 After closing valve 3 connected to the high pressure service check joint A change the connecting point from A high pressure to C low pressure service check joint At this moment place the vessel of the REPLACE MULTI ester oil kit on a scale 3 Open valve 3 connected to the service check joint and recover oil for 2kg 4 After recovering oil close the oil recovery service valve B ball valve 2 of the REPLACE MULTI ester oil kit and valve 3 connected to the service check joint 3 in total 5 Open valve 4 before the
33. Work content Adjusting temperature of bottle charged with oil in the ester oil sam pling kit and the bottle to which oil is moved for sampling oil to be measured Leave the bottle charged with oil inside the ester oil sampling kit and the bottle for sampling oil to be measured for 50 minutes to allow the oil to moved under the same environment as the outdoor or indoor Locate the refractometer in the same environment Caution Although the bottles may be located either outdoor or indoor leave them in the same place where the refractive index explained later is measured In the case of P200 250YREM A lt gt RY Oil recovery service valve BV5 2 Measuring method and judgment of refractive index Work flow Work content Drip oil in the bottle inside the ester oil sampling kit into the portable refractometer ER ee Open the cap of the oil charged bottle in the ester oil sampling kit collect oil by using the filler provided and drip one or two drops onto the prism surface of the portable refractometer Caution 1 Coat oil so that it spreads over the prism surface 2 When air bubbles are found refrigerant may possibly be present Move the oil to be mea sured to the vessel and evacuate it again D N 22222 Air bubble a an WA Read the scale with the o
34. defective 4 The circuit board is defective Check 1 the connections 2 contact at the connectors and 3 for broken wires in the fol lowing wiring CNRS2 53 CNAC2 TB1B If the fuse is melted if the resistance be tween the both ends of fuse is replace the fuse If none of the items in 1 to 3 is applicable and if the trouble reappears even after the power is switched on again replace the cir cuit board by the following procedure when replacing the circuit board be sure to con nect all the connectors ground wires etc securely a If serial transmission is restored after the INV board only is replaced then the INV board is defective b If serial transmission is not restored reinstall the INV board and replace the MAIN board If serial transmission is restored the MAIN board is defective C If serial transmission is not restored by a and b above replace both boards 1102 1 When discharge temperature is detected 1 Gas leak and gas shortage Confirmation of refrigerant quantity to exceed 120 C during operation the unit stops operation At this moment a 2 Overload operation Confirmation of operation conditions and failure no 1102 is displayed on the operating status of indoor and outdoor units screen 3 Malfunctioning operation of ball valve Confirmation of the ball valve being fully opened g 4 Outdoor fan block motor failure and Checking of the outdoor fan
35. total output phase is OFF 2 When output gets into open phase or re mains ON the motor can not rotate smoothly resulting in generating ticking noise and vibration At power on valve opening signal with 2200 pulse is sent to be sure to determine the position of the valve in the position A When the valve acts smoothly no noise or vibra tion is generate from the LEV However when the valve acts from E to A it is locked a big noise is generated due to an open phase and other fac tors Noise generation can be confirmed by applying screwdriver to the valve and applying an ear to its handle 2 Outdoor LEV The valve opening varies in proportion to the number of pulses Connection of outdoor main board and SLEV LEV1 outdoor electronic expansion valve Outdoor main board DC12V 01 lt Outdoor unit main board connector CNLV1 CNVV2 Output state 4 5 OFF OFF OFF OFF ON ON OFF ON Output of pulse signal and valve action At valve opening 1 5253545556575891 At valve closing 8 77 6 5 4 3 2 1 8 Note 1 When the valve opening does not vary all output phases are OFF 2 When output is open phase or remains ON the motor can not rotate smoothly resulting in gen erating ticking noise and vibration Closing and opening action of LEV At power on valve closing signal with a 520 pulse
36. 1 When LED is in a locked state the motor runs idle At Lock in portion of this moment it ticks slightly Indoor LEV mechanism If a ticking noise generates at both closing and opening Replace the LEV of LEV it is a failure Outdoor Measure resistance between coils red white red orange brown yellow brown blue with a tester Replace the LEV coil Indoor Disconnection or When each resistance is within 1500 10 it is normal short circuit of LEV motor coil Measure the resistance between coils gray orange gray red gray yellow gray black with a tester Replace the LEV coil Outdoor When each resistance is within 460 3 it is normal 1 Visual check of the disconnection of the terminal block Wrong wiring or at the part of connecter and the color of lead wire Check the conductivity of failure contact failure of 2 Pull out the connecter on the side of the control board to spot connecter check its conductivity with a tester Indoor Outdoor 402 4 Removing procedure for outdoor LEV Composition ZCAM B25YPMD 8DA As shown in the illustration the outdoor LEV is designed so that the LEV main body may be detachabl e from the coil Coil Stopper we i Unit body Lead wire Removing procedure for coil Firmly fix the lower part of the main body Section A in the illustration so that the main body may not move and pull the coil upward If you pull out the coil alone witho
37. 10 V or 3 more 5 c f wn 74 Check codes Meaning Detection means Trouble factors Checking method and countermeasure 4115 Abnormal power source synchronized signal 1 At power on power frequency can not be determined Detection of power frequency is impossible The outdoor fan can not be controlled by phase control 1 Power source failure Check the voltage of the terminal block for power source TB1 2 Breaking of the fuse for the main board Check the main board fuses F1 and F2 3 Wiring failure Check the voltage among pins 1 5 and 7 of the main board connecter CN20 Unless it is the same voltage as power source voltage AC380 400 415V it is a wiring failure 4 Main board failure Despite that all of the above items are nor mal if any problem still remains it is a main board failure Abnormal fan revolution Only PKFY AM is detected 1 When the fan revolution is detected to be 180 rpm or less or 2 000rpm or more in the first detection while the fan of indoor unit is operating 3 minute restart prohibi tion mode is applied to stop the fan for 30 seconds 2 After the fan restarts 30 seconds after stopping when the fan revolution is de tected to reach 180 rpm or less or 2 000 rpm or more the unit operation stops ir regularly including the fan At this mo ment an error 4116 is displayed on the screen 1
38. 6 2 if not this is a fault Check main board resistance is 1kt5 if not this is a fault 5 Faulty indoor unit remote controller Replace outdoor unit circuit board or remote controller 88 2 MA remote control transmission The MA remote control and indoor unit communicate with the current tone burst method 1 Symptoms caused by infiltration of noise on transmission cable If noise etc infiltrates the transmission cable and the communication between the MA remote control and indoor unit is cut off for three consecutive minutes a communication error 6831 will occur 2 Confirmation of transmission specifications and waveform A1 B2 No polarity Across terminal No 1 2 Power supply 9V to 12VDC MA remote controller Indoor unit Transmission waveform Across terminal No 1 2 222222222202 7 1 2msec bi 55 must be satisfied 2 Voltage across terminal No 1 2 must Logical 1 Logical 0 Logical 1 Logical 1 uu be within range shown on left 2msec 2 2 12 gt 89 Transmission power circuit 30V check procedure If is not displayed by the remote control investigate the points of the trouble by the following procedure and correct it No Check Item Judgment Response 1 Disconnect the transmission line from TB3 DC24 30V Check the transmission line for the following and and check the T
39. Otherwise a suffocation accident may be caused by children play with the disposed bag Provide thermal insulation to the valve on the field piping extended piping properly Insufficient thermal insulation generates condensa tion that may cause to deteriorate the performance Provide thermal insulation including lagging after recovering mineral oil CONTENTS Caution to REPLACE MULTI Installation Work Safety Precautions Simplified Judgment for Reuse of Existing Piping Wiring Judgment for Reuse of Existing Piping 2222 224 4 400221 2 1 Reusing CITY MULTI air conditioner system esses nnns 2 2 Reusing other makes or Mitsubishi other than CITY 2 Connection Range of Deformed Piping 2 24400001 4 Judgment for Reuse of Existing Transmission Line Wiring 5 System Design Outline EQUIDIMOBE 10 1 Combination Ke UNITS mE 10 2 Temperature range allowing mineral oil recovery operation 10 3 Items to be observed TE 10 Product Specification sss enne enne nennen nnns nnn ennt nns 11 UNCON 11 1 Specification table 2 Exte
40. REPLACE MULTI Setup Disk DOS V machine with CD ROM WINDOWSS95 98 NT 4 0 2000 ME or Hecommended conditions CPU 2 or more Memory 64MByte or more HDD 40MByte or more OS WINDOWS 2000 or later Installation method 1 Set the REPLACE MULTI Setup Disk to the CD ROM drive of the objective PC 2 Execute the setup exe of the CD ROM drive and install by following the instruction displayed on the Screen Starting method of S W for replacing 1 Click the START button and click the PROGRAM 2 Click the REPLACE MULTI and start the S W for replacing Request When flushing operation can not be executed normally do not change the set time of the PC during the working of the S W for replacing 2 Items to be confirmed before flushing operation 1 Set the address of the oil trap kit within a range of 00 99 not using the address being used by the outdoor unit indoor unit remote controller and PC 2 Set the communication port of the PC to COM1 Change it to COM1 if itis being set to other than COM1 Otherwise the flushing operation can not be executed 3 Only required at the existence of indoor units of under Ver30 or LOSSNAY with heating humidifier of under Ver8 08 Will be displayed on PC to remove Remove the system controller connected to the indoor outdoor transmission line and MA remote con troller grouped with different refrigerant systems Reconnect them after f
41. and Faston etc are properly inserted 3 Do not remove or insert inverter connectors with the main power supply on as this will result in damage to the PCB 4 The current sensor will be damaged if current flows without connecting to the PCB A lways insert connectors into the corresponding PCB when running the inverter 105 2 Treatment of inverter output related troubles Check item Phenomena Treatment 1 Check the INV board error detection circuit Perform the following CD Disconnect INV board CNDR2 After removing turn on the out door unit and check the error sta tus The compressor does not operate because CNDR2 which carries the IPM drive signal has been disconnected CD IPM overcurrent error 4250 detailed No 101 102 103 104 105 106 107 Replace INV board 2 ACCT sensor circuit error 5301 detailed No 6 See to 4 Current Sensor Check the resistance and replace if erroneous Replace the INV board if the ACCT status is normal 3 DCCT sensor circuit error 5301 detailed 118 Replace DCCT Turn on the outdoor unit again af ter replacing the DCCT If an er ror 5 Replace the INV PCB The DCCT condition can be re garded as normal 4 ACCT sensor circuit error 5301 detailed No 115 INV board error detection circuit is normal Because IPM can not drive if the CNDR2 is disconnected 2 Check for com pres
42. as possible 7 Existence of noise trouble on the unit before replacement YES NO In case of YES enter the trouble detail into the column of remarks 2 8 Is the noise generation from high harmonics medical YES NO equipment estimated In case of YES enter your apprehensions in detail into the column of remarks 2 1 Include the portion of the remote controller length M NET System controller exceeding 10m into the figure of the transmission line length Indoor outdoor centralized 2 Regarding the judgment and countermeasure on noise please contact our dealer Dunjoeuo UOISSIUISUEJ peuedo eui ejejnsu spue eu uedo pue UOISSILUSUB JeuBis JO euru OU 0 pepjelus Jo yeu se owes se pue JOJOWEIP IJEN e JO OU 9JIM 1oeuuoo apis 49 Ajddns Jemod 100pino Ajddns semod y 104 1seuue jo eui WO Buipeeoxe e epnjou e 7 9JIM vi epis Ajddns Joopino Ajddns 190g se 10U JequinN pesn jou Jo 614
43. at a place with good ventila tion Use leather gloves when opening the oil re covery service valve and open it slowly If done a closed space suffocation can be caused Opening the oil recovery service valve fully and quickly allows oil to splash which is dangerous As the oil recovered is of low temperature frostbite may be caused if it touches skin For inspection use the ester oil sampling kit when the refrigerating machine oil used in the existing unit is mineral oil Confirm the type of refrigerating machine oil used in the existing unit by reading the name plate or the like Proper checking can not be executed if not using the kit meeting the refrigerating machine oil used by the existing unit This possibly causes machine trouble When the oil trap kit is transported while ly ing sideways do not place any thing on the sheet metal of the kit Otherwise the sheet metal or inner piping may be deformed leading to breakage Before removing the oil trap kit after flush ing operation make sure to discharge and process the oil recovered from the oil recov ery service valve f it is not discharged the oil accumulated inside will flow out during flushing operation hindering proper recovery of mineral oil thus leading to machine trouble Precautions for Devices that Use R407C Refrigerant Use refrigerant piping made of phosphorus deoxidized copper and copper alloy seam less pipe
44. control to the MA remote control NO Modify the defective 93 In the case of M NET remote controller Symptom Cause Check method amp Countermeasure Despite pressing of re mote controller ON OFF switch operation does not start and there is no 1 M NET transmission power source is not supplied from outdoor unit CD Main power source of outdoor unit is not connected 2 Disconnection of connector on outdoor unit circuit a Check transmission terminal block of re mote controller for voltage In case of 17 30V Faulty network remote controller electronic sound board ii In case of less than 17V Main board CNS1 CNVCC3 See Transmission Power Circuit No powering signal INV board CNAC2 CNVCC1 CNL2 3 Faulty power source circuit of outdoor unit 30V Check Procedure Faulty INV board Blown fuse F1 on INV board appears Broken diode stack Broken resistor R1 for rush current protection Short circuit of transmission line Erroneous wiring of M NET transmission line at outdoor unit CD Transmission line disconnection or slipping off from terminal block 2 Erroneous connection of indoor outdoor transmission line to Disconnection of transmission wiring at remote controller Faulty remote controller The cause of 2 and 3 is displayed with self diagnosis LED for 7102 error At about 10 seconds af ter turning remote con troller o
45. dance with other operation indication than shown on the remote con troller Air velocity drain pump etc At the time of changeover cooling and heating operation noise may generate from the indoor unit Normal indication The noise is the sound of the change over of refrigerant circuit it is not a failure Immediately after the unit starts operation refrigerant flowing noise may generate from the indoor unit Normal indication The noise generates due to the instability of transitional refrigerant flow it is not a failure At the time of operation other than heating operation warm air may come out Normal indication As it is due to a slight opening of LEV for the purpose of preventing refrigerant accumulating in the indoor unit at the time of operation other than heating operation it is not a failure If it becomes a trouble deal with it according to 5 Instructions at equipment selection in System Design and Engineering Works Manual 86 3 Investigation of transmission wave shape noise 1 M NET transmision Control is performed by exchanging signals between outdoor unit indoor unit and remote controller by M NET transmission If noise should enter into the transmission line the normal transmission will be hindered causing erroneous operation 1 Symptom caused by the noise entered into transmission line Noise entered into Signal changes and is misjudged as the signal of other 66
46. dealer of the PC Connection with DOS V PC Caution For the cable of D SUB connector use prepare the cross DOS V PC cable of 9 pin 25 pin Otherwise abnormal communica N tion may be caused Oil trap kit Caution pi f D SUB2 pin type or D UB2 connector Connect RS 232C cable while removing M NET transmis sion line Otherwise trouble may occur 3 Address setting Unscrew the screws 2 pcs of the control box at the oil trap kit and set the address The range of address setting for the oil trap kit is 00 99 Select the address that is not being used by the indoor units outdoor units remote controllers and PC 5 2 Wiring connection after flushing operation 1 Wiring connection with outdoor unit 1 Remove all wiring power source wiring transmission wiring connected to the oil trap kit i e the original state before connecting the oil trap kit 6 Connection work on rainy days Please refrain from working on wiring and piping on rainy days If the work is conducted provide proper covering with vinyl sheet while paying attention to the items below 1 Prevent rain water from entering the piping 2 Be careful not to expose the electrical parts of the outdoor unit and oil trap kit to rain fall 3 Be careful not to touch the wiring with wet hands Otherwise electric shock may be caused NEUES 7 Flushing operation 1 Installation method of S W Items to be prepared
47. erly completed The power source for indoor unit is not turned on The power source for outdoor unit is not turned on number of connected remote controller exceeds 2 of the allowable number of remote controller or the number of connected indoor unit exceeds 16 of the allowable number of unit The address of indoor unit is OO and that of outdoor unit is other than 00 The indoor outdoor transmission line is connected to TB7 Short circuit disconnection of the indoor and outdoor transmission line Short circuit disconnection of M NET remote control ler Blowout of the fuse for the control board of indoor unit The indication does not go off or appears re peatedly and periodically The indication is normally displayed for 3 minutes at the longest after the out door unit is turned on The power source for outdoor unit is not turned on The power source for transmission line booster is not turned on Switching of Main and Sub for MA remote control is selected to Sub MA remote control is connected to the indoor out door transmission line During mineral oil recovery operation The powering indication is displayed on the remote controller but the unit does not operate The power source for indoor unit Main unit is not turned on The indoor outdoor transmission line is connected to TB7 Short circuit contact failure of the indoor outdoor tran
48. from indoor units the unit is directly connected to the con trol devices for indoor units such as MA remote control ME remote control and MELANS When direct control from controllers such as MA remote control ME remote control and MELANS put SW3 1 of the outdoor air pro cessing units in the ON position SW3 1 setting Operation method outdoor air processing unit Operation in the interlocked mode with indoor units OFF Direct control from MA re mote control ME remote control or MELANS ON Units can not be operated due to an incorrect connection of indoor units to outdoor units in the refrigerant system 1 Power cut off of the transmission line booster 2 Power reset of the transmission line booster and outdoor units a Check if the power source for the transmis sion line booster is connected to the switch for indoor units If the power source for the transmission line booster is turned on it does not operate normally Reset the power source for indoor units Indoor unit OA pro cessing unit Remote control failure A failure of no data transmission on temperature in spite of designating a remote sensor 1 When an old type of remote control for M NET Wide remote control is used and a remote control sensor is designated for an indoor unit SW1 1 is ON a Change the remote control for a M NET re mote control Outdoor unit
49. high pressure sensor failure Characteristics deterioration e When no pressure difference between the two is found A high pressure sensor failure c Remove the high pressure sensor from the main board and check monitored pressure The monitored pressure is around 0 0 098MPa A high pressure sensor failure e he monitored pressure is around 2 96MPa main board failure d Remove the high pressure sensor from the main board and check monitored pressure with the con necter 63HS short circuited between No 2 No 3 When the monitored pressure is beyond 2 96MPa high pressure sensor failure e In other case than the above main board failure 2 Composition of high pressure sensor The high pressure sensor is composed of the circuit illustrated on the right hand figure Application of DC5V between lead wires red and black generates power pressure according to pressure between lead wires white and black of which power pressure is taken into the micro computer The output voltage is 0 1V per 0 098MPa Pressure 0 2 94MPa Vout 0 5 3 5V 0 1V 0 098MPa Connector GND Black Vout White Vcc DC5V The pressure sensor main body side is of specifica tions for connecting the connecter Main body side Main board side The pin number of connecter for the pressure sen 1 pin 3 pin sor main body side and the main board side is dif ferent respectively 2 pin 2 pin 3 pin 1 pi
50. is not the case there is a possibil ity that there was a compressor failure 2 Main power breaker trip compressor ground fault can be considered Go to 2 2 07 4 Simple checking procedure for individual components of main inverter circuit Part name Judgement method Diode stack Refer to Determining diode stack troubleshooting 6 IPM Intelligent power module Refer to Determining IPM interference 5 Rush current protection resistor R1 R5 Measure the resistance between terminals 47k 1096 Electromagnetic contactor 52 Measure the resistance value at each terminal Judgement value 0 1k 1 3kQ Check location A1 A2 1 L1 2 T1 3 L2 4 T2 5 L3 6 T3 DC reactor DCL Measure the resistance between terminals 10 or lower almost 00 Measure the resistance between terminals and the chassis Cooling fan MF1 Measure the resistance between terminals 0 1k 1 5kQ Transformar To1 Measure the resistance between terminals on the primary side CNTR1 1 0k 2 5kQ Measure the resistance between terminals on the secondary side CNTR 20 600 Current sensor ACCT Disconnect the CNCT2 target connector and check the resistance between terminals 2800 300 ACCT U ACCT W 1 2PIN U phase 3 4PIN W phase Check the ACCT connecting phase and direction Edge 5 Intelligent power modu
51. is sent to be sure to determine the position of the valve in the position The pulse signal is output for about 17 seconds _ 5 When the valve acts smoothly no noise or vibration 8 is generate from the LEV However when the valve z 1 is locked a noise is generated D Opening t ofvalve a Noise generation can be confirmed by applying screwdriver to the valve and applying an ear to its gt handle Full opening 80 pulse When liquid refrigeration is present in the LEV 4 the noise may be low Pulse numbers 1 3 Troubleshooting method and envisioned failure mode Note The specifications of outdoor unit Outdoor LEV are different from those of indoor unit Indoor LEV For this reason countermeasure for a failure may be different depending on the failure take action in accordance with the subject LEV shown in the right column Failure mode Failure determination method Countermeasure Subject LEV 1 Pull out the control board connecter to connect LED for checking shown in the figure below Indoor LEV Outdoor LEV Drive circuit failure In case of a drive circuit failure Indoor of microcomputer replace the control board Outdoor 1kQ 1kQ LED LED When the main power is turned on a pulse signal is output for 10 seconds for the indoor LEV and 17 seconds for out door LEV If no LED remains ON or some LED remains OFF the drive circuit is abnormal
52. label affixed on the container of standard liquid LB When any discrepancy is found in the measured value correct the calibration with the attached screw driver Notes 1 When performing the above work be careful not to give body heat to the portable refract meter at random 2 After the above work firmly fasten the container cap of remaining standard liquid to keep in a cold and dark place Since the liquid is volatile firmly fasten the container cap without loose 4 Cautions when replacing the outdoor unit main board For specifications for operation as Replace Multi series has a characteristic that mineral oil recovery operation in the refrigerant pipe makes a diversion of existing pipe possible normal operation can not be performed until the mineral oil recovery operation is completed Information on the completion of mineral oil recovery operation is written in the memory of the main board for control accordingly Therefore in case of taking a wrong proce dure for replacement of the main board the following phenomenon may appear When replacing only ROM completion information of the main board is held An outdoor unit operates before mineral oil recovery operation which may lead to a compressor trouble and shortened service life Mineral oil operation can not be performed After mineral oil recovery operation an outdoor unit does not operate Consequently be sure to carry out the work in the following descrip
53. mote controller but the unit does not operate The indoor outdoor transmission line is connected to TB7 Switching of Main and Sub of MA remote controller is selected to Sub Short circuit or disconnection contact failure of the indoor outdoor transmission line 85 e Confirm where a trouble has occurred among the following locations 1 2 3 4 In overall system In overall refrigerant system Only in the same group Only in one indoor unit 7 NS In case of overall system and overall refrigerant system Check the self diagnosis LED of outdoor unit Check the items related to outdoor units in the left column In case of only in the same group and only in one indoor unit Check the items related to indoor units in the left column 6 The following phenomena are not failures abnormality Phenomenon Indications on remote controller Causes When centralized control is indi cated on the indoor unit heating cooling operation is not available Centralized control The unit is under centralized control Even when indicating cooling heating operation indoor units do not operate Blinking Cooling Heat ing indication When other indoor unit is on heating cooling operation cooling heat ing operation is not available The auto vane operates freely Normal indication In one hour after air flow begins to blow downward by auto vane c
54. oil flow field supply Method of re flushing operation Depending on the difference of refractive index of the oil charged bottle for sampling oil to be measured with a refractometer conduct cooling heating operation and re flushing operation NG mode program for reflushing for the rated frequencies as shown below Repeat the operation of A D as follows Difference of refractive index Frequency of re flushing operation Operation method 0 0015 0 0025 1 time Replenish and recover 1 ester oil for REPLACE 0 0025 0 0040 2 times MULTI while conducting cooling heating operation 0 0040 0 0070 3 times Replenish and recover 1 ester oil for REPLACE 0 0070 0 0115 4 times MULTI while conducting re flushing operation 47 Replenishment recovery of ester oil under cooling heating modes Work flow Work content Carrying in ester oil for REPLACE MULTI and tools Checking the required parts _ Mounting the ester oil sampling kit for REPLACE MULTI A 1 Unscrew 6 screws on the outdoor unit front panel and remove the front panel 2 Connect the ball valve 2 at the lower part of the ester oil kit to the oil recovery service valve B and the upper ball valve 1 to the service check joint high pressure A Caution When connecting the service check joint firstly connect the valve field supply to mount the cha
55. operate the oil recovery service valve do it slowly using leather gloves or the like Recover mineral oil until the continuous dis charge of the liquid recovered oil from the oil recovery service valve stops The state of spraying or dripping is acceptable When removing the piping flexible tube note that inside the piping contains gas refrigerant Remove it after recovering the refrigerant Confirm that the pressure inside the oil trap kit is stable within 0 049 0 294MPa with a pres sure gauge When it is out of the above range take coun termeasures by confirming the inner pressure of the oil trap kit Click Finish and turn the PC power source off To monitor the operation status do not set to Finish 4 After that remove the power source wiring between OC and OTK and the connecting cable between OTK and PC To monitor the operation status remove only the power source wiring between OC and OTK 4 Turn the power source of OC on and confirm the operation e To start confirming the operation use the test run switch of the remote controller or OC Emergency stopping method The work can be paused or suspended during the flushing operation and refrigerant recovery operation REPLACE Main screen To pause the work click Stop moniter At the display of the left message click YES OC stops the operation of the compressor Emergency stop Clicking NO
56. recovering oil of 2 mount the vessel for sam pling of oil to be measured attached to ester oil sampling kit and open it for 1 2 seconds to collect oil Oil recovery service valve BV5 Evacuating vessel Evacuate the vessel for sampling oil to be measured sampling of oil for measurement Caution 1 Laying the vessel horizontally for evacuation discharges oil together with air Evacuate while standing vertically 2 After reaching a vacuum degree of 650Pa evacuate for about 15 sec onds or more and leave it for 15 seconds to confirm that the vacuum degree does not rise A 3 Be careful error may be caused by insufficient evacuation Vacuum pump 4 Working below 20 C the desired vacuum degree can be attained sooner if evacuating while heating the vessel with a dryer about 10 minutes Move the oil inside vessel for sampling Loosen the flare nut of the vessel for sampling to be measured open the oil to be measured to the bottle bottle for sampling oil to measure cap and pour the oil inside the vessel for sampling oil to be measured for sampling oil to be measured Bottle Caution for sampling 1 Open close the flare nut with two spanners oil to measure 2 Wipe off water content adhered to the vessel for sampling oil to be mea sured not allowing water enter into the bottle for sampling oil to be mea sured 45 Work flow
57. service part settings f Change the power to another system g If this problem occurs suddenly there is a possibility that the inverter output is grounded Proceed to 2 3 Contact the factory for cases other than those listed above 7 Sudden malfunction as a result of external noise a Check to ensure that the unit is grounded b Check to ensure that the transmission line shield wiring is be ing used properly in the necessary environment and that the shield wire ground is appropriate c Check to ensure that the neither the transmission line or exter nal connection wiring run close to another power supply sys tem or run through the same conduct pipe Contact the factory for cases other than those listed above 1 Due to a large capacity electrolytic capacitor used in the inverter voltage still flows through even after cutting the main power creating the possibility of electric shock As a result wait for a sufficient length of time 5 10 min after cutting the main power and check the voltage at both terminals of the electrolytic capacitor to performing any checks on the inverter 2 Damage will result to the components of IPM etc if the inverter wiring is not properly secured with screws or if the connector has not been properly inserted It is likely that any errors occurring after replacing components are the result of wiring mistakes Ensure that the wiring screws connectors
58. speed is about 600 rpm at full speed For fan control refer to the item of the control of outdoor unit 99 4 4 LEV Outline action of LEV LEV Indoor Linear expansion valve and SLEV LEV1 Outdoor unit Linear expansion valve activate valves with the stepping motor by receiving a pulse signal from the indoor unit and outdoor unit main board 1 Indoor LEV The valve opening varies in proportion to the number of pulses Indoor Outdoor control board and LEV Indoor Linear expansion valve 2 LM Control board Intermediate connector DC12V Note As the number of intermediate connectors are different from that of the connector on the con trol board side identify it with the color of lead wire Output state Pam ft _ __ hen UNE HE 01 White ae lt Brown 6 Connector Indoor control board CN60 Board for control board CNLV1 CNLV2 2 OFF ON ON Closing and opening action of LEV Closing of valve Valve opening Flow rate Range of valve opening 80 100 pulse Opening of valve Full opening 2000 pulse Pulse numbers 00 Output of pulse signal and valve action At valve opening 1 525341 At valve closing 4 gt 3 2 1 4 Note 1 When the valve opening does not vary
59. state into the existing piping the residual mineral oil inside the existing extended piping can be recovered into the oil trap kit Feeding oil fluidity solution from upstream of the existing piping can maintain or even increase the fluidity of residual mineral oil thus allowing the mineral oil to flow through the indoor units Outdoor unit Oil trap Oil trap kit Throttle Oil N separ ator Refrigerant heat exchanger CS p p _ Promotes flushing by lowing the viscosity of the oil Mineral oil fluidity solution Separates and recovers oil with fluidity solution Outdoor unit Indoor heat exchanger throttle Flow of ester mm 1 i x 4 Flow of mineral oil Flow of refrigerant hot gas Flow of refrigerant low pressure gas Flow of refrigerant gas liquid 2 phase refrigerant Principle of recovery by refrigerant under gas liquid 2 phase state incompatible with mineral oil mark portion above Refrigerant gas R407C Piping center Floating layer of mineral oil Refrigerant liquid R407C Mineral oil attached to wall surface N Pipe wall of refrigerant piping The mineral oil used as the refrigerating machine oil of conventional refrigerant R22 systems are oils mostly incompatible with new refrigerant R407C By flowing R407C to piping attached with min
60. the valve mounted to the extended piping 4 positions Close the service valves of the oil trap kit at 4 spots Turn off the power source of the outdoor unit once After flushing operation recover mineral oil by opening the oil recovery service valve The mineral oil recovered by flushing operation should be extracted each time from the oil trap kit During the work observe that the pressure is staying within 0 049 0 294MPa Remove the oil trap kit Remove piping flexible tube and wiring between the outdoor unit remove valves mounted to the extended piping and oil trap kit Remove the oil trap kit After reconnecting the piping kit field work to the outdoor unit execute evacuation Open the ball valve in the order of extended piping outdoor unit 1 and 4 Mount the system controllers and MA remote controller previously removed After removing the oil trap kit confirm the inner pressure with a pressure gauge Do not store the oil trap kit at a place exposed directly to solar radiation but store in a cool and dark place nt Connect the piping kit processed there and evacuate inside of the piping kit _ Confirm operation After recovering oil conduct ordinary air conditioning operation and check the cooled air heated compressor starting air and the operating condition of the compressor The test run and adjustment work are not included Execute them separat
61. to be install iso that amplify microscopic signals electrically wireless mi lated from the transmission line power source crophone medical equipment for example these equip line of the unit and the unit body ment may operate erroneously affected by the noise Fur The power source line of the equipment emit ther installing the air conditioner near the equipment emit ting strong noise and that of the air conditioner ting strong noise like electric discharge machine etc should be separated and the transmission may cause the malfunction of the air conditioner due to line power source line and unit body should the noise In the case when such troubles are expected be installed isolating each other as much as please take the countermeasure shown right possible 10 Il Product Specification 1 Outdoor unit 1 Specification table Y Series Outdoor unit model name PUHY P200YREM A PUHY P250YREM A Power source 3N 380 400 415V 50 60Hz Cooling capacity 1 kW 22 4 28 0 Heating capacity kW 25 0 91 5 E Power Cooling kW 6 32 8 54 input Heating kW 6 80 8 95 9 E Cooling A 10 6 10 1 9 7 14 4 13 6 13 2 Heating A 11 4 10 9 10 5 15 1 14 3 13 8 Refrigerant Lubricant R407C MEL32 Type x quantity Hermetic x 1 Compressor Motor output kW 5 9 6 8 Starting system Inverter start Crankcase heat
62. to be off all together for 5 minutes or more And then the power is again turned on b In the case that no failure occurs in operation for 5 minutes or more examine the transmit ted wave pattern and noise The examination method is according to Examination procedure for transmitted wave pattern and noise 3 System failure Check codes Meaning Detection means Trouble factors Checking method and countermeasure 7100 Outdoor Total capacity error 1 The total capacity of the model name of unit a Confirm the total model names of indoor unit A failure indicated when the total in the same refrigerant system exceeds the units to be connected Sum total of capac capacity of indoor units in the same total capacity in the following table ity code refrigerant system exceeds the b Confirm the switch Indoor controller board regulated value Model Total capacity SW2 for setting the model name of units P200 260 capacity codes to be connected In the case of mismatching with a model P250 325 name correct the model name capacity code and switch for model name setting in the state that power sources for both out door units and indoor units are cut off 2 Setting of model selection switch for outdoor Confirm the model selection switch for outdoor units is wrong SW3 10 units Refer to the table below for out door dip switch on the main board
63. 00 transmission line address Transmission wave shape changes to other signal due to noise 6602 Transmission wave shape changes due to noise and can not be received normally thus providing no reply ACK 6607 Transmission can not be made continuously due to the entry of fine noise 6603 Transmission can be made normally but reply ACK or 6607 answer can not be issued normally due to noise 6608 2 Method to confirm wave shape 3 1 No fine noise allowed with transmission No fine noise allowed 1 without transmission BEN Check the wave shape of transmission line with an oscilloscope to confirm that the following conditions are being satisfied 1 The figure should be 104us bit 1 2 No finer wave shape noise than the transmission signal 52 196 should be allowed 1 3 The sectional voltage level of transmission signal should be as follows Logic value Transmission line voltage level VHL 2 0V or more 1 VBN 1 3V or less 1 However minute noise from the DC DC converter or inverter operation may be picked up 87 3 Checking and measures to be taken a Measures against noise Check the items below when noise can be confirmed on wave shape or the error code in the item 1 is generated Items to be checked Measures to be taken Checking for wiring method CD Wiring of transmission and power lines in crossing Isolate transmission line from power line bcm
64. 1 012 7 flare conn 12 7 flare conn PAC KP82FPP Flange joint 019 05 flare conn Flange joint Flange joint Type Connection configuration 25 2 Valve operation For piping connection and valve operation follow the figure below The figure below shows the ball valve of the oil trap kit For the flange section of the piping flexible tube use new packing provided only for 1 time use and mount firmly to avoid gas leak Coat refrigerating machine oil ester oil ether oil or alkyl benzene a little amount on both sides of the packing For opening closing of flare nuts use two spanners together Coat refrigerating machine oil ester oil ether oil or alkyl benzene a little amount on the flare contacting surface After evacuation make sure to fully open the handle Operating with a valve closed generates abnor mal pressure inside the refrigerant circuit possibly damaging the compressor 4 way valve etc After completing work tighten the service port and cap firmly so as not to generate a gas leak Ball valve Ball valve Ball valve Ball valve Outdoor unit 1 Extended piping side 2 Extended piping side 3 Outdoor unit 4 open slowly open slowly open slowly open slowly AT oo Valve rod Packing Accessory Stopper pin i Service port Flare nut To extended piping To outdoor unit
65. 2 012 7 50 57 5 15 88 75 80 019 05 100 140 Caution For the refrigerating machine oil to coat on the flare flange connections use ester oil ether oil or alkylbenzene a little amount Standard of clamping angle Pipe dia Clamping angle 06 35 9 52 60 90 012 7 015 88 30 60 019 05 20 35 Mixing of mineral oil in a large quantity may cause a deterioration of refrigerat ing machine oil When a torque wrench is not available use the method below instead When tightening the flare nut with a spanner the clamping torque may abruptly increases Stop the tightening once at this moment and rotate further for the angle shown in the above table 26 3 Airtightness and evacuation of flexible tube 1 Airtight test For the airtight test pressurize the flexible tube from the service port on the end of it at the oil trap kit side while closing the refrigerant service valve ball valve of the oil trap kit valve mounted to the extended piping and outdoor unit while opening the valve of the replace tank After applying to 1 and 3 apply to 2 and 4 The figure below shows the state of 1 and 3 Make sure to pressurize all flexible tubes 4 spots Replace tank eplace tan gt lt 4 System analyzer gt lt kit Nitrogen gas As the procedure of the airtight test gives the serious effect in deteriorating refrigeratin
66. 2 2 Fasten to fin guard Fasten to fin guard Fasten hood Although the standard is TH6 20 C or less the hood is required to be mounted to protect against any outdoor wind or rain interfering with the flushing operation In the case when the discharge pressure 30 minutes after starting flushing operation is 63HS 20kg cm or the mean value of low pressure LPSave is less than 0 46 As the low pressure 63LS may drop depending on the initial refrigerant status for 30 minutes after start of flushing operation please take a proper measure while observing the operating condition In the case of TH6 gt 43 C adjust the hood vertically for TH6 lt 43 C When the outdoor low temperature hood can not be mounted due to the centralized installation sys tem remove the spring for fastening 44 IV Work Procedure at Oil Inspection 1 Oilinspection after mineral oil recovery List of oil inspection parts for mineral oil Parts name Application Specification Hemarks Ester oil sampling kit Oil sampling inside outdoor Vessel 1pc Bottle 2pcs 1pc charged with oil unit Filler 2pcs Portable refractometer Measuring of oil refractive Recommended maker K K Atago Purchased Atago index Product No N 3000E product your agent Oil pan field supply Oil recovery vessel 2 For the portable refractometer read the instruction manual carefully before use underst
67. 200Q 5 2000 5 2000 5 2000 5 2000 5 2000 109 7 Caution at replacement of inverter parts 1 Fully check wiring for incorrect and loose connection The incorrect or loose connection of the power circuit part wiring like IPM and diode module causes to damage the IPM Therefore check the wiring fully As the insufficient tightening of screws is difficult to find tighten them together additionally after finishing other works For the wiring of the base for IPM observe the wiring diagram below carefully as it has many terminals 2 Coat the grease for radiation provided uniformly onto the radiation surface of IPM diode modules Coat the grease for radiation on the full surface in a thin layer and fix the module securely with the screw for fastening As the radiation grease attached on the wiring terminal causes poor contact wipe it off if attached Motor Compressor Capacitor CNDC2 C2 C3 G A board 110 6 1 2 Control circuit Power source for control 1 Outdoor unit controller DC12V and DC5V derived from the bus voltage DC280V for the outdoor unit inverter are supplied to the main board by the DC DC converter INV board 2 Control line The control source for indoor system DC30V and control source for central control system DC30V are provided by the DC DC converter INV board from the bus voltage DC280V for outdoor unit in
68. 22 Service model name code W650296G01 2 External dimension Notes 1 For the connection and operation control of the oil trap kit you are kindly requested to obtain our ap proval 2 Make the piping length between the oil trap kit and the outdoor unit 5m or less The optional flexible hose 2m is prepared by Mitsubishi 336 77 757 terminal block cover 2 Terminal for TT connection lt RS 232C gt Refrigerant service valve lt outdoor unit low pressure side gt 28 58 lt flange gt __ 1 7 Refrigerant service valve lt outdoor unit high pressure side gt 012 7 flare Refrigerant service valve outdoor unit low pressure side 019 05 flare Refrigerant service valve outdoor unit high pressure side 015 88 flare Pressure gauge Refrigerant service valve lt oil recovery gt 06 35 flare Caster Caster swivel side stopper side with stopper Transmission terminal block TBO2 Power source terminal block TBO1 Details of A section s13 Ill Outline of Flushing Operation Install the oil trap kit between the outdoor unit and extended piping Operation of the outdoor unit is in cooling mode feeding the R407C charged in the system under a gas liquid two phase state from the oil trap kit heat exchanger By feeding the refrigerant in the gas liquid two phase
69. 315 short circuited between No 2 3 When the monitored pressure is beyond 1 37MPa Low pressure sensor failure e In other case than the above Main board failure e Remove the high pressure sensor 63HS from the main board and check the monitored pressure with low pressure sensor 6315 inserted e When the monitored pressure is beyond 1 37 Main board failure other case than the above Low pressure sensor failure 2 Composition of high pressure sensor The low pressure sensor is composed of the circuit illustrated in the figure below Impressing DC5V between red and black generates power pressure according to pressure between white and black of which power pressure is taken into the microcomputer The output voltage is 0 3V per 0 098MPa The pressure sensor main body side is of specifica tions for connecting the connecter The pin number of connecter for the pressure sen sor main body side and the main board side is dif ferent respectively Pressure 0 0 98MPa Vout 0 3 3 5V 0 3V 0 098MPa Main body side Main board side Connector GND Black Vout White Vcc DC5V Red 1 pin 3 pin 2 pin 2 pin 3 pin 1 pin 98 4 2 Solenoid valves SV1 and SV2 Confirm if the output signal of the control board is in accordance with the action of the solenoid valve 1 For SV1 Bypass valve 1 Since SV1 is ON for 15 minutes after starting the compresso
70. B3 voltage correct any defects Broken wire short circuit grounding faulty con tact Except the above mentioned to No 2 2 Check if the following connectors are Connector disconnected Connect the connectors as shown on the electric disconnected in the outdoor unit s control wiring diagram plate box MAIN Board CNS1 CNVCC3 CNVCC4 Except the above mentioned to No 3 INV Board CNVCC2 CNVCCA CNL2 CNR CNAC2 Disconnect the wires from CNVCC3 on the DC24 30V Check the wiring between CNS1 and TB3 for the Main board and check the voltage between following and correct any defects pins 1 and 3 on the wire side of the Broken wire short circuit grounding faulty con CNVCC3 tact Tester QD 1 pin If there is no trouble replace the main board Tester O 3 pin Except the above mentioned to No 4 4 Disconnect the wiring from CNVCC2 on the DC24 30V Check the wiring between CNVCC2 and INV board and check the voltage between for the following and correct any defects pins 1 and 3 of CNVCC2 Broken wire short circuit grounding faulty con Tester QD 1 pin tact Tester O 3 pin Except the above mentioned to No 5 5 Disconnect the wiring from CNL2 on the 0 5 9 2 50 to No 6 INV board and check the resistance at both ends of choke coil L2 Except the above mentioned Replace choke coil L2 6 Disconnect the wiring from CNR on the INV 19 250 to No 7 board and check the resista
71. EM A 2 252 0 51 52 1 01 IC IC Group 3 IC IC IC 1100 2 IS Group 4 ICi TE 1100 2 US output file set IC IC 10 outputfile name 201 Is the result of acquisition correct output interval m T reference Start 7124M 117 2004 REPLACE Setting screen xi OC address 00 address 00 OTK address 2 Group 1 MNT eoo aloo amp oo s oo Self address 252 IC Address Group 3 1fo0 2fo0 3 00 4 o0 amp oo amp oo v oo amp oo s oo aofo Group 4 i o0 e oo 3 00 4 amp oo amp oo foo amp oo s oo 10004 output file set output file name 20040117 csv reference output interval 10 sec 10 600 Start Acquiring indoor unit attribute Wait a while 117 2004 7 13AM 33 Oil equalizing S SH Shell bottom SH Click the REPLACE MIULTI of the PROGRAM menu Enter the self address Enter the address within 1 253 not using that being used by OC OTK IC and remote control lers The default value is set to 252 Enter the OC address J Enter the OTK address 1 Do not enter the OTK address 2 4 Click Connection information Confirm the display of information connection monitored result Click YES i
72. Error wiring of the MA remote control 1 Short circuit of the MA remote wiring 2 A break of the MA remote control line No 2 and dis connection of the terminal block connection 3 Reversed wiring cross over in the group control 4 Wire by mistakes the MA remote control to the termi nal block TB5 for the transmission line 5 Connect by mistakes the M NET transmission line to the MA remote control terminal block TB13 7 The unit address is not 00 as it should be with auto matic address setting 8 The address of Indoor Unit becomes 51 or more 9 The master and slave setting of the MA remote control becomes the slave setting 10 Use the M NET remote control in spite of the automatic address 11 Defects for the room controller board MA remote com munication circuits 12 Defects for the remote controller Check method and handling The same phenomena in all unit of the same refrigerant system happen Self diagnosis LED checks 7120 error display NO Check for the terminal block TB15 voltage for the transmission line of the indoor unit Check for 4 item lt gt YES Check the items of 5 6 8 9 and 10 Factors available NO Defects of the indoor unit controller board or MA remote control Check for 2 and 3 of factors NO Modify the defective places Check for 11 item Modify the defective places YES Change the M NET remote
73. Function setting error The function setting of outdoor units is not properly completed The connecter on the board of an outdoor unit is not properly connected Confirm the connection of the connecter Indoor unit Abnormal combination Indoor units to be connected have their model names for different refrigerant A connected indoor unit is for model name J Indoor unit exclusively for refrigerant R 22 The model name of an indoor unit to be connected is wrong 83 Confirm the model name of indoor unit to be connected 4 Others Meaning Detection means Trouble factors Checking method and countermeasure Information ac quisition error on connection An error detected when there is no response to information on connection from the outdoor unit for 5 minutes the ON position 1 This is not the case of ICE Yk system but an outdoor unit is repeating start up process ing because the setting switch SW4 10 is in 2 An outdoor unit is repeating start up process ing because the unit is reset due to noise a Check the dip switch for the outdoor main board b Examine the transmitted wave pattern and noise on the transmission line The examination method is according to Ex amination procedure for transmitted wave pat tern and noise 5 Content and countermeasure for operation trouble of remote controller For MA remote controller system
74. Inverter circuit error Refer to VII 5 2 5 Checking of the inverter circuit trouble Faulty wiring detection failure Failure details No 120 Detection of improper fixing of the ACCT sensor 1 Wrong fixing of ATTC sensor 80 Refer to VII 5 4 5 Current sensor ACCT 2 Abnormal communication Meaning Detection means Trouble factors Checking method and countermeasure 6500 Communication error setting error and 1 Setting of the PC communication port Confirm if the communication port is set to COM1 transmission error These errors are detected when setting from PC is not available and the unit operates in a different way than set up by the PC Faulty serial port of PC Replace the PC 2 Variation of the operation mode of the outdoor unit Only for the case that there is even one of indoor units with Ver 30 or under or Losnay with a humidifier with Ver 8 08 or under Confirm if operation is controlled from the system controller for the indoor system MA remote con trol or other controller 3 Transmission line RS 232C is slipped off Confirmation of the connection of transmission line RS 232C 4 Power failure and instantaneous stopping Confirmation of item 4106 5 Change of a transmission signal due to noise 6 Reset of a unit due to noise Examine the transmitted wave pattern and noise on the transmission line The exa
75. Is it SUNISO MS HAB to reuse such piping Barrel Freeze or Freol Is the old unit Mitsubishi NO YES YES an you find the heig difference between outdoor and indoor Do you wish to replace with our units and between indoor units NO Building Multi in the same capacity YES Please check it YES Do you know the piping NO diameter length YES In the piping planned for reuse are the outdoor and indoor units connected Install new piping As the piping left alone may allow the entry of s the height difference between indoor and outdoor units less than 50m 40m when outdoor unit locates below indoor unit and that between indoor units less than 15m maximum Please investigate YES Do you know the piping diameter length Please investigate YES e in the field Do the piping diameter and piping length match our standard Do you know the configuration of the branch piping Do you know the maker type and model name Please investigate YES in the field Judge the possibility of reuse by checking the configuration Is the branch pipe of T Y while referring to the standard or header branching YES Change the branch pipe with that specified by us Is a gas leak found NO VES Was the old unit operated before replacement without refrigerant leak bd 15 the air tightne
76. REPLACE Main screen H OC PUHY P250YREM A Ver 02 03 0 Address 51 Power Ope Mode Stop DF 0 OiR RefR 5 SH 25 F 0 1 HzF2 Hz 5n jua 00 A 0 000 i 0 H 4 0 lde TH2 00 Thee 1 00 0 0300 LEVi 0000 SLEV 564 y TH2 0 13 TH3 THSa 63 5 00 63LS 00 2194a 5 1 SV2 SVB SV4 0 0 0 0 _ 0 TH4 9 0 SCo 24 0 2184b SV5b SV22 SV32FAN2 SV3 5 78 10 gh 5 36 5 E CR TH6 129 THHS 125 Fave 0 00 LPSave 0 00 SHb 152 NO ATAD GR QJ TH2 TH3 TD NO ATAD GR QJ THI TH2 TH3 TD Flushing qe WE abo abes un 388070 Ug HELME Mo I 135242 Completed 2 3 4 5 8 qu Outdoor unit 51 Monitoring ANP TH10 119 004 2 54 REPLACE Error history OC 2 ver 02 03E0 Address 51 Mineral ail recovering Normally operating Mo Address Error code Mo X Address Error cade 1302 1302 02 51 1302 02 51 2102 03 ses 03 51 7102 08 eem 04 51 7130 08 05 51 7130 06 51 7130 07 eese 07 51 2130 na 51 5102 51 1211 Help Reading of mineral oil recovery work manual REPLACE screen
77. SSP Service valve low pressure Service valve 502 gt TA Service valve high pressure 24 4 Connect the flexible tube to the outdoor unit valve mounted to the extended piping and oil trap kit 1 4 When general refrigerant piping copper pipe is used select a suitable type by referring to the piping specification of flexible tube shown below When the length of piping connected to the outdoor unit and oil trap kit exceeds 2m use the general refrigerant piping copper pipe with the selected diameter for a portion of over 2m by referring to the following table Eos Piping length Hemarks 012 7 0 9 2m 012 7 0 9 2m 019 05 1 0 am Requires to mount short copper pipe 28 58 19 05 028 58 1 2 2m Requires to mount flange 1 Caution Mount the connecting pipe 1 4 correctly without erroneous connection Erroneous connection does not allow recovery of mineral oil 1 Service parts code R61 E91 494 In the case of P200 250YREM A 1 3 PAC KP82FPP Connection method Remove short copper pipe and flare nut select the flexible piping corresponding to the number in the drawing shown above from the following table and connect to the port with same number Quantity P200 250YREM A 12 7 flare conn 12 7 flare conn
78. The power source of Losnay is not turned on For Lossnay suitable for different refrigerant the out door suitable for different refrigerant is not turned on One Lossnay is already registered to one of indoor units The address of Lossnay is different The address of Lossnay is not set yet Losnay is not connected to the transmission line The powering indication is not displayed on the remote controller No elec tric supply to MA remote controller The power source for outdoor unit is not turned on number of connected indoor units or remote trollers in the same refrigerant system exceeds the respective allowable number M NET remote controller is connected to MA remote controller wire Short circuit disconnection of the indoor outdoor transmission line Short circuit disconnection of M NET remote control ler wire The indication does not go off or appears re peatedly and periodically The indication is normally displayed for 3 minutes at the longest after the out door unit is turned on The power source for feed extension for transmis sion line booster is not turned on The address of indoor unit still remains 00 Address setting error of indoor unit or remote con troller MA remote control is connected to the indoor out door transmission line During mineral oil recovery operation The powering indication 6 is displayed on the re
79. The revolution detection connecter for the indoor control board CN33 is slipped off Confirm if the connecter for the indoor con troller board CN33 is not slipped off 2 The connecter for fan output of the indoor power board is slipped off Confirm if the connecter for the indoor power board FAN1 is not slipped off 3 The wiring of the revolution detection con necter for the indoor control board CN33 is broken or the connecter for fan output of the indoor power board 1 is dis connected Confirm if the wiring is not broken The filter is clogged Check the filter Indoor fan motor failure Check the indoor fan motor The revolution detection circuit error for the indoor controller board or the output circuit error for the indoor power board If no problem is found with those above a In the case that the fan is out of work after starting operation replace the in door controller board When the fan does not still operate properly after the replacement of the board replace the power board as well b In case that the fan does not oper ate replace the indoor power board Motor failure Only Losnay is detected 1 The motor is rotating in the state of OFF 2 The thermal relay is in the state of ON Only for 3 phase model 1 Board failure Replace the board 2 Motor failure 3 Electromagnetic switch failure 75
80. When conducting mineral recovery work the next day close all service valves of the out door unit valve mounted to the extended piping and oil trap kit to finish the work and open all service valves immediately before starting flushing operation Otherwise mineral recov ery time is extended due to prolonged start up time or the oil traped inside the kit is over flown hindering the normal mineral oil recovery Perform air tightness test Evacuate the piping Flexible tube Apply flushing inside of the exiting piping 1 Apply power source to the outdoor unit and confirm the completion of the start up 2 Check the operating sound caused by the ON OFF of the solenoid valves 3 Through the PC operation drive the outdoor unit compressor to recover mineral oil inside the extended piping The recovery time requires for 1 5 3 hours Outdoor temperature below 20 C the low outdoor air hood should be fitted to the outdoor unit However under low outdoor temperature flushing operation may be required again due to insufficient refrigerant Hecover mineral oil inside the oil trap kit When the frequency or low pressure drops less than the rated value due to insufficient refrigerant and the such like the time required for the mineral oil recovery may exceed 3 hours For detail refer to P36 Prevent the outdoor unit and oil trap kit from being exposed to rain directly Close the service valves of the outdoor unit and
81. actors then down modifications should be performed An appropriate dis 4 Transformer defects or damage to unit f there are no factors of the left de play on the remote 2 MA remote controller has been wired incorrectly scribed 1 and 3 move to b control is not on CD Break of the MA remote controller line and the con b Remove the remote control wiring from the nection to the terminals has come off terminal block TB13 for the MA remote con 2 Short circuit of the MA remote control wiring trol in the indoor unit and check voltage be 3 Reversed connections of the wiring on remote con tween A and B troller In the case of voltage DC9 12V 4 Incorrect connection of the MA remote control wiring Check the left described 2 and 4 if to the transmission line terminal block TB5 these are factors then modifications 5 Reversed connections between the MA remote con should be performed trol wiring in the indoor unit and AC 200V power sup ii In the case of voltage not available ply wiring Recheck the left described 1 once 6 Reversed connection between the MA remote control again if this is a factor them modifica wiring in the indoor unit and M NET transmission wir tions should be performed ing e f there are no factors in the left de 3 The maximum number of MA remote controllers con scribed 1 check the wiring for the re nected to one is unit exceeded two units mote display the relay polarity et
82. all valve is attached ball valve to the outdoor unit Air tightening and evacuating the existing Wi Execute an airtight test to check the existing piping for deterioration or leaking piping and charging refrigerant Calculate the quantity required by the extended piping and charge the addi tional refrigerant Make sure to enter the value in the additional refrigerant charge column on the label of the outdoor unit the refrigerant charge is insufficient enter the value also During local installation work 4 Without applying any operation keep the ball valves of the outdoor unit closed before mineral oil recovery operation Enter required items in the request form of REPLACE MULTI mineral oil recovery work Operating mineral oil recovery It is necessary to charge refrigerant a rated quantity and adjust the quantity TIERS Be sure to execute when the piping length is unknown final verification of operation For detail consult the agent of your dealer M Safety Precautions e Before installing the unit make sure you read all the Safety precautions Safety precautions provide very important points regarding safety Make sure you follow them Symbols used in the text Warning Describes precautions that should be observed to prevent danger of injury or death to the user Caution Describes precautions that should be observed to preve
83. allows OC to operate continually montar Click OK and confirm the stopping of the com pressor Emergency stop X montor Error history 40 TT x OC PUHY P250YREM A Ver 02 03 0 Address 51 Power Ope Mode Stop 0 5 SH TdSH 339 015 0 2 2 Tc 342 0 0270 0 00 1 706 46 20 AOC 0300 LEV1 0000 SLEV 0000 559 y TH2 1 9 8 132 83HS 153 63LS 0 44 2154a 5 1 SV2 SVB 5 4 3 2 9 que THE SCo 24 0 21546 SV5b SV22 5 32 SV3 5 78 SCc 365 Disp uc cad c TH amp 128 THHS 125 Fave 81 93 LPSave 0 44 THBOX SHb 151 NO ATAD GR TH2 TH3 TD NO ATAD GR QJ TH2 TH3 TD Refrigerant reca 2 3 25 838005188800 K 2 5 Stopping B minuts 7111 Om m 5 DOM NE E UC NET NE Error history 7 3 I IRIS M ICE EE VE PESE Outdoor unit 51 Monitoring 10 117 2004 10 04 AM Display at erroneous input and detection of abnormality To restart the operation click Restart Refrigerant recovery during refrigerant recov ery operati
84. always use an exclusive cir Insufficient power source capacity or improper instal ask your dealer Improper repair result in water leakage electric When installing or moving the unit do not charge other than the specified refrigerant R407C into the refrigeration cycle e Air if mixed generates abnormally high pressure in s the refrigeration cycle which may damage the unit Do not reconstruct or reset the protection devices e f the protection devices like the pressure switch thermal switch is forcibly operated by short circuit ing or parts other than that specified by Mitsubishi Electric are used fire or explosion may be caused Before Conducting Mineral Oil Recovery Operation Caution Do not turn off the power source immediately after stopping Be sure to wait for 5 minutes or more Otherwise water leakage or troubles may be caused Do not touch the refrigerant piping during operation or immediately after stopping with bare hands The refrigerant piping or the refrigerant circuit parts of the compressor during operation or immediately after stopping may have low or high temperature Touching with bare hands may cause a burn or frost bite Do not run the outdoor unit during a test run until finishing the mineral oil recovery operation The indoor unit fan will run Caution to Mineral Oil Recovery Operation A Warning Be sufficiently careful to avoid the oil trap Be careful not to exp
85. amage it during wiping 2 As the contaminated prism surface may cause an error or make the boundary line vague always keep it clean by wiping ET Judgement A difference of the refractive index between the oil charged bottle and the bottle for sampling to be measured 30 0015 or less _ Acceptable as it is 10 0015 exceeded ER lt lt Execute flushing operation again 46 Sectional name of portable refractometer Scale correcting screw Light collecting plate Prism For the portable refractometer please read the in struction manual to understand the sectional func tion and control method fully before actual use 3 Measures to be taken at oil inspection Failure to pass oil inspection test No Good Parts list Parts name Application Specification Hemarks Ester oil for Replenishment of ester Mounted to ball valve at Service parts REPLACE MULTI oil 2L to outdoor unit both ends Requires the quantity below for re flushing operation of 1 time P200 250YREM A 1 pc A complete set of parts Execution of flushing Refer to 111 Mineral oil Not required for the re flushing operation for mineral oil recovery operation recovery operation method of less than 2 times operation Valve field supply For evacuation Charging hose Connection with outdoor field supply unit Gauge manifold Checking of
86. and its function and operation fully Dealer of Atago products As of December 2003 Country Distributor TEL FAX Belgium Analis 32 9 243 77 19 32 9 220 08 48 LEO KUEBLER 0721 22491 21090 0721 27903 Germany Kleinfeld Labortechnik GmbH 49 5108 9298 15 49 5108 9298 98 France Fisher Bioblock Scientific S A 33 3 88671414 33 3 88 675359 33 3 88671168 33 3 8867 1125 Italy ANALYTICAL CONTROL S P A 39 02 6122841 39 02 6127646 Netherland Luxembourg Denmark Bie amp Berntsen A S 45 44 94 88 22 45 44 94 27 09 Ireland England Greece P BACACOS 5 A ATHENS 30 210 5232 631 30 210 5229 141 Spain GOMENSORO S A 91 508 6586 91 508 6511 Portugal CONCESSUS S A 351 21 387 2406 351 21 388 5950 Finland BERNER 358 9 134511 358 9 13451384 Austria VWR International GmbH 43 1 57600 323 43 1 57600 350 Sweden TAMRO MEDLAB AB 46 31 706 3000 46 31 706 3030 GOFFIN MEYVIS 31 76 5 86000 31 76 5086086 JENCONS SCIENTIFIC LTD 44 1525 372010 44 1525 853617 1 Oil sampling method Work flow Work content Take the following items to site ester oil sam Checking required parts pling kit portable refractometer and tools Operating outdoor unit collecting oil 1 Operate outdoor unit for dispensing sampling 2 Place oil pan and open for 1 2 seconds to collect oil from oil x recovery service valve and dispense the recovered oil Accumulator 3 20 minutes after
87. ating the compressor When outdoor air temperature is below 0 C the unit does not operate for 4 hours at the longest after power source is turned on During warming up operation the fan is operating Outdoor units do not operate before operation in mineral oil recovery When the main power source is turned on an indication shown in the right column is displayed on the remote control of indoor unit for about 2 minutes Blinking indication The system is starting up After blinking indication goes out operate the remote controller Even with the unit operation stop ped the drain pump does not stop Light out While the unit stops cooling operation the drain pump operates for 3 minutes after the compressor stops In shutdown the drain pump keeps working Even while the unit stops in the case that drain water comes out oper ate the drain pump An indication shown in the right column continues to be displayed on the remote control or system controller Blinking indication Error indication The unit is on mineral oil recovery operation After the HO blinking indication light or the error indication light goes off operate the remote control or system controller Indoor units do not operate accord ing to the direction of remote con troller of indoor unit Normal indication Light out During mineral oil recovery operation the indoor unit operates in accor
88. aulty remote controller Interlocking control with MELANS 12 No grouping registration from MELANS Neglecting to set the relation between indoor unit and network remote controller 13 Disconnection of centralized control transmission line TB7 at outdoor unit 14 At system connected with MELANS power supply connector CN40 is inserted to centralized control transmission line of outdoor unit Checking method amp countermeasure In case MELANS is not used same symptom for all NO units in a single refriger ant system Confirm address of remote controller with HO displayed Indoor unit 100 Check outdoor unit address Outdoor unit address setting miss Check centralized control switch SW2 1 at outdoor unit Indoor address Switch Change from ON to OFF Faulty outdoor unit control circuit board Address setting miss of remote controller Check address of coupling indoor unit Remote controller 100 YES Check voltage of indoor unit M NET transmission terminal block Transmission line wiring miss of in door unit M NET YES Check connection between indoor unit M NET trans mission terminal block TB5 and connector CN2M NO Check Fresh Master SW3 1 Setting miss of Fresh Master SW3 1 YES Faulty indoor controller board or remote controller Repair spot in trouble Disconnection of CN2M connector
89. board connecter CNDC2 3 INV board failure Confirm if DC12V is applied to the inverter board connecter CN52C while the inverter is working 4 52C failure Refer to VII 5 4 Checking of coil 52C resistance Check the voltage between 52C contact points while the inverter is operating 5 Diode stack failure 76 Refer to VII 5 6 Checking of Diode stack resistance Check codes Meaning Detection means Trouble factors Checking method and countermeasure 4220 Bus voltage increase protection Failure details No 109 When detecting Vdc is 425V or more while the inverter is working 1 Different voltage connection Confirmation of power source voltage at the power terminal block TB1 2 INV board failure If no problem is found with power source replace the INV board VDC failure Failure details No 110 Abnormal bus voltage When detecting Vdc is 400V or more or 160V or less 1 Details No 4220 Same as No 108 and 109 Failure details No 4220 Same as No 108 and 109 Logic failure Failure details No 111 Abnormal H W logic When only the circuit is alive without any detection of failure discrimination 1 External noise Refer to VII 3 Malfunction by external noise 2 Inverter board failure If detecting the same failure even after restart replace the inverter board 4230 Heat sink overheat protection When detecting the co
90. c 4 The wiring length of the MA remote line and the used e If there are no factors replace the con electric wire diameter is out of specifications troller board in the indoor unit 5 The wiring of the remote display output to the outdoor min GR unit is short circuited or the relay is connected with re n the case of item 1 the i LED 1 on the controller versed polarity Board it is off 6 Defective of the controller board in the room 7 Defects of MA remote control 2 When turning on the 1 M NET transmission power supply from the outdoor unit is not sup remote control opera tion SW a temporary operation display is in dicated and the dis play lights out imme diately the unit stops plied CD The original power supply of the outdoor unit is not turned on 2 Disconnection of connectors on the board of the outdoor unit Main board CNS1 CNVCC3 INV board CNAC2 CNVCC1 CNL2 3 Power supply circuit defects of the outdoor unit INV board defects e Blown fuse F1 Board Diode stack destruction Prevention resistance of rush current R1 damage 2 Transmission line short 3 Wiring mistakes of the M NET transmission line on the side of the outdoor unit CD Break of transmission line and removal of terminal block 2 The room transmission line is wired to the transmission line ter minal block TB7 for the central control by mistakes 4 M NET transmission
91. cified range may hinder the mineral oil recovery performance possibly lead ing to deterioration of refrigerating machine oil Do not use breakers or fuses other than that with correct capacities Use of a fuse with excessively large capacity or wire copper wire may cause troubles or fire For the power source wiring use wire with rated current capacity Otherwise an electric leak heat generation or fire may be caused When using existing wiring for power source or transmission or switches check them for disconnection and deterioration beforehand e products are packed with PP band Do not use it as a means of transporting During transport cuts may be caused by the fin sur face of the heat exchanger please refrain from touch ing it without gloves Do not use the same switch or the like for plural outdoor units Otherwise malfunction heat generation or fire may be caused Be sure to mount the valve to the field piping extended piping After mineral oil recovery the oil trap kit can not be removed disabling air conditioning operation Otherwise an electric leak heat generation or fire may be caused Dispose the packing materials properly As the packing materials are using metal products or wooden pieces such as nails nail wounds may be caused if it is improperly treated Please observe caution to avoid this from occuring Dispose the polyethylene bag for packing only after tearing
92. cular mirror c Sad Remove oil adhered to the prism surface PN Sd Apply the same operation to the bottle for sampling oil to be measured 1 Direct the top end of the refractometer toward the direction of sun light turn the ocular mirror to read the scale clearly while looking in the ocular mirror Caution 1 Measuring with direct solar radiation sun light may gen erate the coloring of the boundary line Use soft lighting such as the reflecting light off a wall surface Be careful the sample oil loaded may drip while reading the scale 1 46 Grasping the refractometer with your whole hand during measuring may give your body heat to the meter causing possible error When the boundary line is vague despite ocular adjust ment refrigerant may be dissolving Move the oil to be measured to the vessel and evacuate it again Refriger ant can also be removed by opening closing the light col lecting plate for about 20 times 19 1 45 2 As the boundary line separating bright and dark sections horizontally appears in the visual field read the scale on the boundary line Down to the 4th decimal point Example 1 4530 By using a soft tissue paper damped with water wipe off the prism surface light collecting plate and its surrounding and further wipe off water content with a dry tissue paper Caution 1 As the prism is soft be careful not to d
93. cylinder ous pressurization pause during the process to con Use parts like pressure gauge charging hose etc firm no pressure drop is found exclusive for R407C 2 By using an electric leak detector for R407C check The electric leak detector for R22 can not detect gas leak at all spots likely to generate gas leak such R407C as the flare connections brazed connections and flange The color rendering type halide torch can not be connections used unable to detect 3 This may be used together with the foaming test 27 2 Evacuation For the evacuation of the flexible tube evacuate the flexible tube from the service port on the end of it at the oil trap kit side while closing the refrigerant service valve ball valve of the oil trap kit valve mounted to the extended piping and outdoor unit while opening the valve of the replace tank After applying to and apply to 2 and The figure below shows the state of and 3 Make sure to evacuate all flexible tubes 4 tubes After reaching the degree of vacuum at 650Pa abs evacuate further for 3 minutes or more Then stop the vacuum pump and leave it for 3 minutes Confirm that the degree of vacuum does not rise at this moment When the degree of vacuum increases by more than 130Pa moisture has possibly been mixed Pressurize dry nitrogen gas up to 0 05MPa and evacuate again Last open the ball valve of the oil trap kit and then those of the outdoor uni
94. detected to exceed its upper limitation temperature and that the low pressure 6315 of the outdoor unit is 0 441MPa or more the temperature and low pressure rise causes 596 higher than normal current outdoor fan control i e Fan speed up to lower high pressure However when discharge temperature 63HS drops or keeps constant outdoor fan control is not changed e The activation temperature is 105 C Limitation on high pressure When the high pressure 63HS and low pressure 6315 of outdoor unit during flushing mode reflushing are detected to exceed each of its upper limitation pressure each pressure rises causes by 20 higher than normal current outdoor fan control i e Fan speeds up by drawing 2096 more current The activation pressure is 2 548MPa e When the high pressure 63HS and low pressure 6315 of outdoor unit during refrigerant recovery are detected to exceed each of its upper limitation pressure each pressure rises causes 20 higher than normal current outdoor fan control i e Fan speeds up by drawing 2096 more current This reduces high pressure The activation pressure is 2 156 Sub cooling coil control Electronic expansion valve lt LEV1 gt for valve opening during flushing mode re flushing LEV1 is 80 However when the high pressure 63HS of outdoor unit exceeds 2 45MPa LEV1 is 388 As for valve opening during recovery mode pending LEV1 is 388 66 7 Detectin
95. detections 2500 5 When the drain sensor detects submersion 1 Water leak due to the trouble of Check if water leak around the humidifier 5 under water while the drain pump is humidifier and clogged drain of the drain shutdown 2502 When the indirect heater of the drain sensor 1 The drain sensor is covered with water Confirmation of the operation of the drain is turned on and the temperature rise from due to the rise of water level caused pump the temperature detected before power on from a trouble of the drain up mecha to the indirect heater is within 20K in the nism o water for 40 seconds or the drain sensor is Measurement of the resistance of indirect 3 covered with water when the temperature of 2 The indirect heater of the drain sensor is heater for the drain sensor drain sensor is 63 C or less after 40 disconnected 820 at a normal condition between 1 and seconds and then the drain sensor detects 3 of CN50 submersion under water 3 minutes later at 3 Detection circuit board failure the shortest after the drain pump is turned If no failure is found with the drain pump it a is an indoor board failure on 4 Trouble in the LEV of indoor unit ia Confirm that TH2 and TH3 temperature rise nearly to room temperature when the fan operation of indoor unit operates Check codes Meaning Detection means Trouble factors Ch
96. e mineral oil recovery vessel O S2 4 Example Decrease in the pressure in the oil trap kit 1 Recover refrigerant from the check joint for service of the ball valve BV1 2 In case of recovery of all refrigerant in the oil trap kit 1 Recover refrigerant at the same time with the check joints for service of all the ball valves BV1 4 and the ball valve BV5 interlocked 4i7 3 Procedure for maintenance and checking of the portable refractometer A portable refractometer Model N 3000E Atago Co Ltd is an optical instrument with which measurement can be done by a simple operation making use of refraction index based on a principle of total reflection Accordingly when carelessly giving a strong shock to the instrument or using it for many years it is necessary to make a calibration correction If maintenance and checking of the instrument not completed or found any adequacy a correct figure can not be obtained with such a portable refractometer Be sure to perform mainte nance and checking of the portable refractometer Procedure for maintenance and checking 1 Parts to be used Standard liquid for calibration correction LB Liquid amount 7ml 2 Procedure for calibration correction A Clean the prism surface and collecting plate of the portable refractometer B Seep two drops of the standard liquid LB on the prism surface to measure C Confirm if it is conforming to the standard amount which is shown on the
97. e oil trap kit 1 4 extended piping and outdoor unit 1 4 6 For the oil trap kit apply from L1 and N of outdoor unit supply or a separate 220 240V supply power source of the outdoor unit and the transmission line from the outdoor unit TB3 7 Connect the oil trap kit and PC 8 Remove the system controller if connected to the indoor system For detail refer to 1 5 Piping work and 6 7 Wiring connection Mounting the ester oil sampling kit for REPLACE MULTI A 1 Unscrew 6 screws on the outdoor unit front panel and remove the front panel 2 Connect the ball valve 2 at the lower part of the ester oil kit to the oil recovery service valve B and the upper ball valve 1 to the service check joint high pressure A Caution When connecting the service check joint firstly connect the valve field supply to mount the charging hose Service panel In the case of P200 250YREM A 15 Upper ball valve 1 Lower ball valve 2 a To B Ester oil for REPLACE MULTI 50 Work flow Work content Evacuating the inside of charging hose B Evacuate the charging hose before and after the ester oil kit for REPLACE MULTI by mounting the valve by opening valve 4 before the vacuum pump and the high low pressure valve of gauge manifold Caution A Evacuating with the ester oil kit REPLACE MULTI 1 2 laid horizontally discharges the
98. ecking method and countermeasure 2503 2 When Short Open is detected during 1 Thermistor failure Checking of the resistance value of the ther 5 During shutdown nothing is 2 Contact failure of the connecter mistor lt detected Insufficient insert QC 15kQ 30 C 4 3kQ 5 Short Detection above 90 C 3 Disconnection or semi disconnection of 10 9 7 40 C 3 1kQ 5 Open Detection under 40 C wiring for the thermistor 20 C 6 4kQ o 4 Indoor board Detection circuit failure Checking of the contacts of the connecter E If no problem is found it is an indoor board failure 2600 _ Water leak from the pipes for the humidifier Confirmation of water leak points eo and other equipment 9 lt 2601 E 1 Water is not supplied to the water tank Confirmation of water supply quantity for the humidifier Checking of the solenoid valve and connec 2 The solenoid valve for the humidifier is tion E not powered Confirmation of connecter parts o E 3 The float switch is disconnected Confirmation of connecting part 4 The float switch is out of work Float switch failure 2 5 The water in the water supply tank is After power source is once turned off power frozen is turned on after deicing 4103 1 The unit does not operate due to the 1 Wiring failure Check if the phase of power source terminal negative phase in power sources L1 L2 block TB1 is positive L3 Checking of wiring from the p
99. ected to exceed its upper limitation of discharge temperature and the low pressure of outdoor unit is 0 441MPa or less current operation frequency must be decreased by 5Hz Discharge temperature is controlled every 30 seconds e The activation temperature of this control is 105 C 3 Limitation on high pressure When the high pressure 63HS and low pressure 63LS of outdoor unit during flushing mode reflushing are detected to exceed the upper limitation of each pressure each current operation frequency will be decreased by 20Hz and 5Hz respectively Both pressures are controlled every 30 seconds e The activation pressures are 2 548MPa 20Hz lowered on the high pressure side and 2 352MPa 631 S 0 392MPa 5Hz decreased at the low pressure side 4 Limitation on radiator panel When the radiator panel temperature THHS is detected to exceed 85 C while the compressor operates operation frequency must be decreased by 2Hz Temperature is controlled every 10 seconds b Limitation on secondary current When secondary current is detected to exceed its upper limitation while the compressor is operating operation frequency should be decreased by 2Hz Secondary current is controlled every 10 seconds The upper allowable current is as described below Models P200 18Amps 25Apeak Models P250 21Amps 29Apeak in parentheses show approximate figures of bus current 65 4 return control Electronic expa
100. ed cooling cycle mineral oil recovery Powered heating cycle Specification Checking continuity with tester Inspection method Pressure sensor 1 Detecting high pressure Pressure 0 2 94MPa Vout 0 5 3 5V 0 1V 0 098MPa Con nector Black Vout White DC5V Red Solenoid valve 1 Returning oil at starting 2 Controlling refrigerant recovery Bypassing of high low pressure at starting under low pressure Controlling low pressure Controlling refrigerant recovery 62 AC220 240V Opens at powering closes at non powering Checking continuity with tester 3 Indoor unit Symbol function Parts code Application Specification Inspection method Electronic expansion valve Adjusting refrigerant at mineral oil recovery DC12V Opening of stepping motor driving valve 0 2000 pulses Refer to continuity check with tester Continuity between white red and orange Continuity between yellow brown and blue White N A Red E Orange Yellow Brown Blue Thermistor TH1 inlet air temp Detecting indoor air inlet temp TH2 piping temp Detecting indoor heat exchanger piping temp TH3 gas piping temp Detecting piping temp at indoor heat exchanger gas side 63 15kQ 80 3460 Rt 15 1 1 exp 3460 57341 273 30C 4 40C 3 1kQ
101. ed frequency reaches predetermined frequency 2 When outdoor air temperature TH6 is above 5 the SV7 be closed For P200 250YREM A 3 Frequency control e Frequency varies so as to keep target refrigerant flow rate and operation characteristics constant Variation of frequency is as shown below Variation of frequency For 75 minutes after flushing mode starts 1 Models For 55 minutes after Except for the mode flushing mode starts 2 case described Refrigerant recovery For 5 minutes after in the left flushing mode starts 3 Model P200 30 70Hz 30 70Hz 45 35 4 30 5 Hz fixed 3Hz Sec Model P250 30 80Hz 30 85Hz 45 35 30 5 Hz fixed 1 When flushing time is 120 minutes 5 At below 5 C of outdoor air temperature TH6 2 When flushing time is 90 minutes When detecting low pressure 63LS from shutdown to restart is 0 49MPa or less 3 When flushing time is 60 minutes When outdoor air temperature TH6 is above 5 C 4 At below 5 of outdoor air temperature When detecting low pressure TH6 goes down to 0 12MPa or less or dis TH6 charge temperature becomes abnormal Error code 1102 within 1 minute 1 Frequency control at start up compressor operates at 30Hz for 5 minutes after compressor start up during flushing mode 2 Limitation on discharge temperature When compressor discharge temperature TH1 during flushing mode reflushing is det
102. ely if required Execute test run amp adjustment This belongs to the field work category Execute it after flushing Inspect oil one month after operation 1 For the inspection of oil use suitable kit for the refrigerating machine oil used by the existing unit Mineral oil Ester collection kit 2 When the recovery of mineral oil is insufficient ester oil etc should be added Note Only in rare cases 19 Mineral Oil Recovery Operation Parts List Parts name Application Specification quantity Hemarks 1 Oil trap kit Mineral oil recovery Built in solenoid valve pressure sensor 1 set PAC KP90VCLU device pressure gauge service valve 2 Flexible tube Piping connection between 012 7 2 pcs each 1 pc of 19 05 and 028 58 1 set oil trap kit and outdoor unit 019 05 is for short copper pipe requires 028 58 PAC KP 82FPP and the valve mounted to the 19 05 connection extended piping 3 Packing Connection between 2 flange 5 pcs outdoor unit 2 pcs valve mounted to the ex and outdoor unit tended piping 2 pcs oil trap kit 1 pc provided inside oil trap kit 4 PC Field supply Mineral oil recovery Equipment operation control DOS V machine suitable for PC 98NX or later CD ROM equipped CPU 300MHz or larger recommended Memory 64Mbyte or larger recommended HDD 40Mbyte or larger rec
103. er W 45 240V 45 240V Type x Quantity Propeller fan x 1 Fan Airflow rate m min 200 200 Motor output kW 0 38 0 38 High pressure protection 2 94 Protection Compressor Over current protection over heat protection devices Fan Thermal switch Inverter Over current protection thermal protection Refrigerant Gas pipe mm 025 4 028 58 piping diameter Liquid pipe mm 012 7 012 7 Noise level 2 dB A 56 57 External finish Pre coated galvanized sheets MUNSELL 5Y 8 1 or similar High mm 1755 1755 External Width mm 990 990 Depth mm 840 840 Net weight kg 239 239 Indoor 15 gt CWB 24 CWB Indoor 15 27 CDB Operating temperature range 52 Outdoor 15 CWB 15 5 CWB door unit at lower position Matters deserving special mention A pipe of 28 58 can be used for the gas pipe Note 1 Cooling heating capacity indicates the maximum value at operation under the following condition 1 Cooling Indoor 27 CDB 19 CWB Outdoor 35 CDB Heating Indoor 20 Outdoor 7 6 CWB Piping length 7 5m 2 is measured in anechoic room 14 imensions 2 External d Unit mm Models PUHY P200 P250YREM A epis EERE EBB ess ss V jepno S 1ueuieseq eui Aq JO y 25012 JOU njoJeo eq eui Buidid y 12euuoo 20 eui Jepun eoeds e
104. eral oil the mineral oil is forced out and peeled off from the pipe wall by the shearing force applied between the mineral oil and refrigerant liquid Then it is carried out while floating on the surface of refrigerant liquid If it is under gas liquid 2 phase state at this moment the liquid refrigerant will be accelerated by gas refrigerant flowing at high speed in the center of the pipe Thanks to this accelerated flow the mineral oil inside piping can be collected quickly Residual quantity 20 40 Longest extended piping 100m Maximum extended length 220m Liquid gas going and returning for 440m 60 Flushing time min 80 100 Residual oil quantity in piping against flushing time 14 120 Installation Operation Work Parts Provided with Trap KIT eiecti rta ruidos mensae bs arii orbs grec k ind 1 Verifying the parts Carrying Storing the Oil Trap l 4 gie Tte 2 Carrying in carrying out MEIST Work Procedure of Mineral Oil Recovery Operation T WO MOU 2 Items to be checked before Installation space and range of oil trap K
105. erant moniter REPLACE screen d After finishing flushing operation refrigerant re covery operation will be executed The remaining time of flushing operation is dis played below the Refrigerant recovery button The recovery processing now is displayed for 18 minutes after starting refrigerant recovery op eration while the refrigerant recovered is finish ing he time required by the recovery processing and the refrigerant recovered is shown indi vidually When the unit is stopped during the recovery processing it will be continued for 51 minutes 4 If the value of the low pressure 6315 drops below 0 11MPa during recovering refrigerant the compressor stops with the display of Stopping Be careful the outdoor fan rotates in full speed even in stopping After stopping for 1 minute the compressor re starts with the display of Ref recovering Flushing operation procedure 2 4 After finishing refrigerant recovery operation the left screen appears On this screen close the ball valve of the outdoor unit and the valve the 000 mounted to the extended piping click OK moniter d After confirming the closing of the ball valve of the outdoor unit and the valve mounted to the extended piping click YES Con
106. eriod means a warranty period 2 Notes It is necessary to consider shortening a maintenance period the case that the following items are applied 1 In case of using this product at a place where temperature and humidity are high or where they vary drastically 2 In case of using this product at a place where power source variation voltage frequency wave pattern distortion etc is large Do not use out of permissible range 3 In case of using this product at a place where vibration or impact is a regular occurance 4 In case of using this product in a bad atmosphere such as in harmful gas oil mist including dust salinity sulfurous acid gas and sulfured chlorine Even if periodical checking based on a checking period is carried out there may be an unexpected accident In this case repair should still be carried out even if trouble occurs out of the warranty period On holding period of parts for repairs minimum holding period of parts for repairs of this product is 9 years after its discontinuation of manufacturing This period is amenable to the guidance of Ministry of Economy Trade and Industry Former Ministry of International Trade and Industry In the case that we procure parts for repairs to be able to maintain the performance of this product by the repair work we will make repairs on it based on customer s request customers will be charged epe 2 Maintenance and checking procedure for major
107. esponding to the error code and error details determined using the remote control error display self di agnosis and countermeasures 2 Main power breaker trip a Check the breaker capacity b Electrical system short circuit or grounding other than the in verter c Refer to 3 1 if not a or b 3 Main power earth leakage breaker trip a Earth leakage breaker capacity sensitivity current check b Meg defect for electrical system other than the inverter c Refer to 3 1 if not a or b 4 Only the compressor does not operate Check the inverter frequency at the LED monitor and proceed to 2 3 if the status is operational 5 The compressor always vibrates strongly or emits an abnormal noise Go to 2 3 6 Noise has penetrated the peripheral device a Check to ensure that power supply wiring etc of the peripheral device is not in close contact with the power supply wiring of outdoor unit b Check to ensure that the inverter output wiring is not in close contact with the power supply wiring and transmission lines c Check to ensure that the transmission line shield wiring is be ing used properly in the necessary environment and that the shield wire ground is appropriate d Meg defect for electrical system other than the inverter e Attach a ferrite core to the inverter output wiring Please con tact the factory for details of the
108. f it is correct Confirm the outdoor unit model name self MY address PC address OC OTK IC addresses and connected numbers When it is not correct click NO and check the connecting status of OC IC etc Connection connection Information REPLACE MULTI x connector information replace A 34 4 Open and close all solenoid valves inside OTK and check the operating sound of the solenoid valves Opens closes starting from SV1 in or der l In checking the solenoid valve operating sound for existence clicking NO opens closes the solenoid valve for 2 times while clicking NO for three times continually displays as shown left Check the solenoid valves inside OTK in such case When the system controller is connected to the indoor outdoor transmission line or MA remote controller is grouped with different refrigerant systems shut off the outdoor unit power source and remove the system controller and MA re mote controller After removal apply the power source and press the OK button If the left display is not shown it is not required to remove the system controller and MA remote controller 4 Click Reference and set the storage location and file name of the output file The default setting is the Xprogram files YreplacemultiY date csv Clicking Start moves to the main screen
109. firm the closing of ball valve Q montar 4 After opening the solenoid valve for several sec onds the left screen appears On this screen close the ball valve and click OK Confirm the closing of ball XI monitor 38 Flushing operation procedure 3 mL Main screen OC PUHY P250YREM A Ver 02 03E0 Address 51 Power 60Hz o smp Mode Stop 0 OWE 5 5 TdSHes 337 ES F2 Hz TH11 THi2 Tc 344 0158 z 1 70 6 TH 46 x 0 Ide 0 0 A TH2 9 TH8 13 2 Tes 1 9 _ 0 300 LEVi 0000 SLEV 0000 562 V a 2194a 5 2 SVB TH3 63 5 1 52 63 5 0 33MPa Dac ME EIE TH9b Hes SCo 240 221545 SV5b 5 22 SV32FAN2 5 3 IEEE SCc 365 8188 LPSave Flushing amp refrigerant recovery finished x SHb 15 1 Fave Flushing amp refrigerant recovery were completed Shut off outdoor unit power source Remove oil trap kit and replace tank and connect piping NO ATAD GR 1 123 10 REPLACE Main screen OC PUHY P250YREM A Ver 02 03E0 Address 51 Power 60Hz sme monitor us Error history Le OTKAC Finish x Mode Stop DF 0 OiR RefR 5 SH TdSH 339 F 0 1 HzF2
110. frigerant systems and from the upper rank controller in case the upper rank controller is used However the environment against noise such as the distance of trans mission line the number of connecting sets the type of connecting controller and the place of installation is different for the wiring for centralized control Therefore the state of the work should be checked as follows a No earthing Group operation with different refrigerant systems One point earthing at outdoor unit Upper rank controller is used Earthing at the upper rank controller b Error is generated even though one point earth is being con nected Earth shield at all outdoor units Connect to ground as shown in the user s manual b When the wave height value of transmission wave shape is low 6607 error is generated or remote controller is under the state of Items to be checked Measures to be taken The farthest distance of transmission line is exceeding 200m Confirm that the farthest distance from outdoor unit to indoor unit remote controller is less than 200m 9 The types of transmission lines are different Use the transmission wire specified Type of transmission line Wire dia of transmission line Shield wire CVVS CPEVS 1 25 or more No transmission power 30V is being sup plied to the idoor unit or the remote control a Check 30V on CNS1 CNS2 b Remove CNS1 and CNS2 and check resistance is 5 2
111. g circulation composition CS circuit As shown in the figure below CS circuit having a structure that bypasses part of compressor discharge gas through the capillary tube to the heat exchange Assuming the refrigerant dryness fraction at the outlet of the capillary tube from both outdoor temperature TH6 and the temperature TH2 pressure 6315 of the low pressure gas liquid 2 phase refrigerant the refrigerant composition circulating inside the refrigeration cycle is calculated This method comes from a utilization of characteristics that the temperature of refrigerant R407C in gas liquid state varies together with composition and dryness Mass ratio between gas and liquid under a certain pressure Condensing temperature Tc and evaporating temperature Te are calculated from the high pressure 63HS and low pressure 6315 The compressor frequency and outdoor fan are controlled by the condensing temperature Tc and evaporat ing temperature Te Construction of CS circuit Schematic diagram 4 way valve Indoor heat exchanger Outdoor heat exchanger Flow rate CS circuit control valve Accumulator 8 Distributed washing control and flow rate control Indoor unit The number of groups when indoor units are automatically grouped allows regulating of the flow rate by use of the control valve LEV of indoor unit so that the remaining amount of oil in each branching tube may stabilize
112. g machine oil make sure to observe the items of restriction In addition as the composition of the non azeotropic mixture of refrigerants R407C will change if there is a gas leak therefore affecting the performance so conduct the airtight test very carefully Procedure of airtight test Restriction 1 For pressurizing with nitrogen gas x Using combustible gas or air oxygen for the pres 1 After pressurizing to the design pressure 1 2 2 98 surizing gas can cause an explosion MPa 3 4 1 56MPa with nitrogen gas leave it for about 15 minutes It is acceptable if no pressure drop is found When the pressure drops a test can be conducted using the foam method below to find the leaking spot 2 After pressurizing as above spraying foaming agent Cuboflex onto the spots where leaking is expected such as the flare connections brazed connections and flange connections etc and observe the generation of foaming visually 3 Wipe off the foaming agent after finishing the airtight test 2 For pressurizing with refrigerant gas and nitrogen gas 1 Charge R407C under liquid state from the cylinder and Refrigerants not indicated on the equipment can not pressurize it to about 0 2MPa by gas pressure Then be used pressurize with nitrogen gas up to the design pressure Charging from the cylinder under gas state changes 2 2 98MPa 3 4 1 56MPa Avoid to continu the composition of refrigerant inside the
113. he service valve is damaged causing possible gas leak 3 Carrying the product while locating the caster downward causes unstable condition leading to falling down due to the vibration during transportation Provide a measure to prevent falling down 2 Carrying in carrying out SS For the unit with a handle instead of knobs the handle can be dis mantled by removing the upper lower panels and bolts 2 pcs fixing the handle Do not operate the unit with the upper lower pan Caster stopper side N Surface with name plate e Fixing material The product is mounted with the parts for transportation including one handle knobs at 5 places and casters at swivel side and stopper side For the carrying in and out of the product locate it horizontally with the name plate at the upper side or vertically and pay careful attention to prevent it from falling or dropping due to obstacles Refrain from locatingthe piping cover facing downward If dropped the service valve may be damaged 3 Storing When storing the product observe the items below 1 Store in a cool and dark place avoiding direct exposure to solar radiation Storing temperature less than 60 C 2 Store the oil trap kit fixed with the stopper locating the caster in the downward facing position 3 Store the oil trap kit flexible tube and branch piping kit mounted with the cap previously provided to prevent the entry of dirt dust a
114. ing wire failure Refer to VII 5 2 5 Checking of the inverter circuit trouble ACCT sensor circuit failure Failure details No 1 17 When detecting 3Amps Effective value of output current 3Amps while the inverter is working 1 Contact failure Checking of contacts of the INV board CNCT2 ACCT 2 ACCT sensor failure Replacement of the ACCT sensor DCCT sensor circuit failure Failure details No 118 When detecting 3Amps lt 3Apeak while the inverter is working 1 Contact failure Checking of contacts at the connecting parts of INV board CNCT DCCT and DCCT side connectors 2 DCCT sensor failure Replacement of the DCCT sensor 3 INV board failure Replacement INV board IPM Open CNCT2 slipping off failure Failure details No 119 When detecting IPM open break or CNCT2 slipping off just before the INV starts In the case that current is undetectable satisfactorily by self diagnosis just before the INV starts 1 ACCT sensor slipping off Confirm CNCT2 sensor connection Confirm ACCT mounting status 2 Wiring connection failure Confirmation of the connections of CNDR2 on the INV board CNDR1 on the G A board 3 ACCT sensor failure Refer to VII 5 4 Current sensor ACCT Confirmation of resistance 4 Compressor wiring disconnec tion Refer to VII 5 2 2 Checking of compressor earth fault and winding wire failure 5
115. ion line in grouping with transmission line different refrigerant system without using MELANS i Normal in case of 10V 30V 8 More than 2 sets of power supply connector are in ii Check the items 7 10 left in case serted into the centralized control transmission line other than i of outdoor unit 9 In the system connected with MELANS power sup ply connector 40 is inserted into the centralized control transmission line of outdoor unit 10 Short circuit of centralized control transmission line 96 4 Troubleshooting for major parts of outdoor unit and indoor unit 4 1 Pressure sensor 1 High pressure sensor 63HS 1 Check high pressure in comparison to detected pressure and high pressure gauge pressure a Compare gauge pressure to monitored pressure in operation conditions e When the gauge pressure is around 0 0 098MPa Decrease in inner pressure due to gas leak e When the monitored pressure is around 0 0 098MPa Contact failure of the connecter Go to d after confirmation of the contact failure e he monitored pressure is 2 96MPa or more Go to c n other case than those above compare pressure an actual operation Go to b b Compare gauge pressure to monitored pressure in operation condition e When the pressure difference between the two is within 0 098MPa Both high pressure sensor and main board are normal e When the pressure difference between the two is beyond 0 098MPa
116. ion of the blown fuse board Confirmation unless the actuators of cooling fans MF 4 way valves and solenoid valves are short circuited 1500 1 If the discharge SHx10K is detected 1 Excessive refrigerant charge Refer to the section on judging the during operation at first detection refrigerant volume the outdoor unit stops at once The 3 minutes restart prevention mode 2 Main circuit board thermistor input Check the sensor detection temperature is entered After three 3 minutes circuit trouble and pressure with the LED monitor the outdoor unit starts up again j 3 Thermistor mouting trouble 2 If the discharge SH lt 10K is detected TH1 TH2 again within 30 minutes after the out door unit stops second g detection an abnormal stops is applied and 1500 is displayed 3 If discharge SHx10K is detected more than 30 minutes after the B outdoor unit stops the state is the same as the first detection and the g same operation as 1 above takes 2 place 5 4 The abnormal stop delay period is in effect for 30 minutes after the outdoor unit stops The abnormal stop delay period LED turns ON during this time 5 If the abnormality detection prohibit switch SW2 4 is ON the same operation as the first detection will apply for the second and following
117. ions Table 2 List of possibility to connect indoor unit deformed piping NO U Gas pipe xixi O x xixixi x x x xixixi gt gt within 25m within 15m gt gt 19 gt gt gt gt gt gt x gt Formula to judge refrigerant charge For the case marked A it is necessary to take measures to reduce the piping length slightly to raise the selecting model or reduce the number of connected indoor units Y series M 0 3xL1 0 2x 12 012 x L3 0 06 x L4 0 024 x L5 lt 17 4 L1 Piping length m of 19 05mm L2 Piping length m of 15 88mm L3 Piping length m of 12 7mm L4 Piping length m of 9 52mm L5 Piping length m of 6 35mm Ill Judgment for Reuse of Existing Transmission Line Wiring To study on the reuse of existing transmission line please refer to the flow shown later starting from the next page For the reuse of existing transmission line enter the necessary items into the check list obtain the system diagram and contact our dealer Check lis
118. it 1 Restrictions 4 Refrigerant piping WOFK MU E UE 4 1 Piping connection before flushing operation 4 2 Piping connection after flushing operation 9 ee WOU E E 5 1 Wiring connection before flushing operation 5 2 Wiring connection after flushing operation 6 Connection work on rainy EU MU ea 1 Installation method of S W 2 Items to be confirmed before flushing operation 3 Starting and finishing of flushing operation 4 Mounting method of low outdoor temperature hood IV Work Procedure at Oil V 1 Oil inspection after mineral oil recovery 1 Oil sampling method 2 Measuring method and judgment of refractive index 3 Measures to be taken at oil inspection Failure to pass oil inspection test No Good Mineral Oil Recovery Operation Data Reference Data 1 Standard data During flushing aibe 16 l Parts Provided with Oil Trap Kit 1 Verifying the parts provided Please confirm that the following parts are provided with this oil trap kit Appearance Inner diameter Outer diameter Storing position Provided at the control box bottom Provided at the control box bottom Quantity 1 pc 5 A
119. itor Display of Mineral Oil Recovery Operation by Outdoor Board LED 1 How to view LED for service monitor The setting of DIP SW1 1 1 8 on the outdoor unit main board allows an operational status to be confirmed with the service LED As for DIP SW and corresponding items refer to Item 2 in the synoptic table As shown in the following illustration the service LED laying out 4 sets of LEDs consisting of 7 segments is so designed that numerical values and graphs can be displayed SEG LED c lo 1 Lr d I Numerical display of pressure temperature etc and graphical display of operational status ON OFF status of the solenoid valve etc can be displayed For numerical display Example When the pressure sensor datum is 18 8kg cm G Item No 53 The unit of pressure is kg cm G Conversion formula to SI unit is as below Display in SI unit MPa Displayed value kg cm G x 0 098 For flag display A flag is expressed with 2 LEDs arranging vertically Example On 3 minute restart operation in outdoor unit operation display Item No 7 LD1 LD2 103 104 LD5 106 107 108 2 Synoptic table of the monitor display of mineral oil recovery operation by outdoor board LED LED monitor display Display LD3 LD4 105 LD6 LD7 Remarks INVOutput frequency 0 9999 TH1 TH11 data 99 9 999 9 Item Data for mineral oil TH10 data 99 9 999 9
120. itting procedure for coil Firmly fix the lower part of the main body Section A in the illustration so that the main body may not move and insert the coil from above and run the coil stop per in the dent Although there are 4 dents for the stopper toward hoop direction on the main body any dent is available However be sure to take care that the lead wire is not subject to force or wind around the main body If you drive in the coil alone without holding the main the coil is subject to force leading to a bend of the pipe Therefore be sure to fit the coil firmly hold ing the main body 404 5 Inverter a Replace only the compressor if only the compressor is found to be defective Overcurrent will flow through the inverter if the compressor is damaged however the power supply is automatically cut when overcurrent is detected protecting the inverter from damage b Replace the defective components if the inverter is found to be defective If both the compressor and the inverter are found to be defective replace the defective components of both devices 1 Inverter related defect identification and countermeasures Error display failure condition Measure inspection item 1 Inverter related errors 0403 4200 4220 4230 4240 4250 4260 5110 5301 Check the details of the inverter error in the error log at the out door PCB LED monitor display or PC display Perform the measures corr
121. ity S W detect 109 Bus Voltage rise abnormality S W detect 110 Vdc abnormality H W detect 111 Logic circuit for H W error detect abnormality 4230 Heat sink overheating abnormality 4240 Overload abnormality 4250 101 IPM abnormality 102 ACCT overcurrent abnormality H W peak detect 103 DCCT overcurrent abnormality H W peak detect 104 IPM short grounding abnormality 105 Load short abnormality 106 ACCT overcurrent abnormality S W detect peak current 107 ACCT overcurrent abnormality S W detect effective current 4260 Cooling fan abnormality 5301 115 IAC sensor abnormality 116 IDC sensor abnormality 117 IAC sensor circuit abnormality 118 IDC sensor circuit abnormality 119 IPM open ACCT connection abnormality 120 ACCT miss wiring abnormality Pos Air inlet TH21 1C Lossnay inlet 4 Discharge TH1 OC Liquid pipe TH22 IC Lossnay pipe TH2 gue Low pressure saturation TH2 OC Lossnay gas side pipe TH3 5103 Gas pipe TH23 IC 5104 Thermal sensor Accumulator liquid level LD2 5105 abnormality Liquid pipe TH5 5106 Ambient temperature TH6 5107 SC coil outlet TH7 5108 SC coil bypass outlet TH8 5110 Heat sink THHS 5111 Fan controller radiator panel TH BOX Error detail No 70 Check code Check content 5201 Pressure sensor abnormality OC 5301 IAC sensor circuit abnormality 6500 Abnormal commu
122. k in troubled spots conductivity with a tester 1 Measure insulation resistance with a 500V megger Insulation resistance up If the insulation resistance is 1 more it is normal Replace the solenoid valve coil Appearance 1 Confirm if no abnormal corrosion is found visually Replace the solenoid valve coil 5 Appearance check by visual observation When any defect such as change in color and corrosion is found in the pressure sensor replace it 3 Strainer 1 The strainer ST3 installed between the ball valve BV3 and the solenoid valve SV3 4 and 5 Replace it at maintenance and checking Check other strainer also referring to the following a Remove the flare nut in the vicinity of the strainer to check the strainers for clogging with foreign mate rials gt In case of many materials clogged check all the strainers b Remove the flare nut in the vicinity of the strainer to check the strainer for their damage When serious damage is found check all the strainers 2 Visual check of appearance When any defect such as change in color or corrosion is found in the pressure sensor replace it 2 3 Procedure for refrigerant recovery There are the two ways of refrigerant recovery in the oil trap kit as shown in the following Before performing refrigerant recovery be sure to confirm that no oil like mineral oil is in the oil trap kit 1 In case of recovery of refrigerant only in th
123. king of gas leak inside existing piping and the verification of reliability relating to piping strength belong to the scope of field work as same as in the past Therefore we are not liable to the quality of existing piping Before starting the work it is necessary to confirm that the existing piping in question owns the rated strength relating to the material thickness and corroded portions if any Points be observed for simplified judgment reuse existing piping 1 Reusing CITY MULTI air conditioner system The existing piping can basically be reused if no problem was found during your use in the past Please check whether the trouble was caused by gas leak or it required frequent refrigerant replenishment 1 Change to same capacity Usable as it is 2 Change to different capacity Check whether the piping diameter piping length height difference etc are within our operating range 2 Reusing other makes or Mitsubishi other than CITY MULTI 1 Check whether the packaged air conditioner used in the past was in operational trouble or not Please check whether the trouble was caused by gas leak or it required frequent refrigerant replenish ment 2 Confirm the type of refrigerating machine oil used by the existing facility SUNISO MS HAB Barrel Freeze Freol are acceptable above ask our factory in each case 3 The branch types of T fitting Y branch and header branching are acceptable The branch pi
124. le IPM Measure resistances between each terminal of IPM with tester and use the results for troubleshooting 1 Focus on whether there is a complete open state or short circuit 00 The measured resistance value is a guideline and may deviate slightly Measure between several similar measurement points If the value does not differ by more than double or half from the other points then judge the state as OK 2 Restrictions to applicable tester Use a tester with an internal power of 1 5V or more e Battery type tester A card tester with button battery has a low applied voltage so the resistance value of the diode charac teristics cannot be measured correctly Use a measurement range that measures the low resistance when possible An accurate measure ment with less fluctuation will be possible The measured values for troubleshooting are shown in the table below External view Internal circuit diagram eJ Ki i 1 U ERE c F 4 re Driver Judged value sper 5 2000 N 5 2000 Over heating pen 1 9 protection circuit Temperature sensor Le 1 6 Diode stack Perform continuity check with tester Judged as normal if the following characteristics are observed Restrictions to applicable tester are the same as those of IPM Tester 9
125. line break on the side of the room unit 5 Disconnection off wiring between the M NET transmission terminal block TB 5 and the room controller board CN2M and pulls off of connectors In the case of factors 2 and 3 Indicated by 7102 error LED of the outdoor unit code on the self diagnosis Phenomena Factors When the remote control 1 Power supply from the transformer is not available to the control board of BC controller SW is turned on the in 1 The original power supply of the BC controller is not turned on dication goes off after 2 Removal of connectors CN12 CN38 CNTR on the control board of the BC controller approximately 20 30 3 Fuse on the control board of the BC controller is blown seconds and indoor unit 4 Transformer defects of the BC controller and a malfunction stops 5 Defects on the control board of the BC controller Check method and handling Check the BC controller power terminal block voltage NO Verify the power E 2407 gt supply wiring original power supply YES Fuse check on the board YES 220 240V circuit short and ground checks Fuse blown off Connector removal checks CN12 CNTR Check for resistance value of transformer Connector connection defects Check for factors of transformer cut Earth route on the board Earth rou
126. lushing operation e oe 3 Starting and finishing of flushing operation Flushing operation procedure 1 The abbreviations used in this manual and on the PC screen display represent as follows OC Outdoor unit Ope Mode Operation mode Oil R Low frequency OTK Oil trap kit D F Defrosting oil recovery IC Indoor unit Forcible powering Ref R Refrigerant recovery RT Replace tank Oil E REPLACE MULTI er 412 Program version Gia information O w i 00 00 4fo0 amp oo amp oo 7 00 amp oo 10 00 Group B Enter self address OC address and OTK address 00 10 00 2 1100 press connection information button Joo output file set For 1 set of OTK do not enter For OTK2 Group 4 output file name 28040117 csv reference output interval 10 5 10 600 Start 14 00 117 2004 7 09 AM REPLACE Setting screen __ Self address OC address IC Address IC address input is not necessary REPLACE Setting screen am ATI connection Self address 252 i i Address acquisition result EN x information Help i Connection information acquisition completed i roup 1 1 1 00 2 Check the IC address IC Address Group 2 1 4 00 PUHY P250YR
127. m lt Standard of flushing operation time Error history ON SV5 OFF Clicking Main monitor returns to the main moni tor screen display The flushing operation time differs depending on the insufficient quantity of refrigerant outdoor temperature and outdoor wind In addition the flushing time will be prolonged when the mean value of frequency Fave is lower than the target frequency When the outdoor temperature drops below 20 or the mean value of the low pressure LPsave lowers below 0 46MPa install the low temperature hood after checking the refrigerant quantity and the opening closing sta tus of the valves However please note that the low pressure 63LS may drop during 30 minutes after starting flushing operation caused by the initial status of refrigerant Always take the operating condition into your account for proper operation The standard of flushing operation with insufficient refrigerant is given by the table below LPSave 0 51 0 56 0 51 0 56 gt LPSave gt 0 41 0 46 0 41 0 46 gt LPSave gt 0 34 Target frequency PUHY P200YREM A PUHY P250YREM A 2 hours 3 hours 4 hours 65Hz 78Hz Refrigerant charge No insufficient refrigerant Insufficient refrigerant 10 36 Insufficient refrigerant 30 REPLACE Main screen montar REPLACE Main screen Hefrig
128. mi IPM replacement each terminal of IPM nal of IPM Check the operation in 3 or 4 Refer to 5 for details on IPM after replacing the IPM troubleshooting In the case of an output voltage unbalance or error recurrence af ter replacement Replace the G A board In the case of an output voltage unbalance or error recurrence after replacement Replace the INV board 4 All normal for items 12 3 above replacement In the case of an output voltage unbalance or error recurrence af ter replacement Replace the G A board In the case of an output voltage unbalance or error recurrence Replace the INV board 3 Trouble measures when main power breaker tripped Check item Phenomena Treatment Perform Meg check between the ter 1 Zero to several ohm or Meg failure Check each part in the main inverter circuit minals in the power terminal block e Refer to Simple checking Procedure for indi Tba vidual components of main inverter circuit Diode Stack Turn on the power again and check 1 Main power breaker trip IPM once more Rush current protection resistor 2 No remote control display Electromagnetic relay DC reactor Noise filter Turn on the outdoor unit and check 1 Operates normally without tripping a There is a possibility that the wiring shorted that it operates normally main breaker momentarily Trace the short and repair If a above
129. mination method is according to Exami nation procedure for transmitted wave pattern and noise 7 M NET transmission error Confirmation of the connection of M NET trans mission line Checking of disconnection and the connection to the terminal block 8 Main board INV board serial communica tion error Confirmation of the wiring between the main board and the INV board and the connecter 9 Board failure If no problem is found with the above replace the board due to board failure Main board INV board or MN converter 6600 Multiple address error This error is detected when it is confirmed that the unit with the same address is transmitting massages Note The address and property indicat ed on the remote control indicate a controller that detects errors 1 There are two or more units with the same address among controllers for outdoor units indoor units Losnay units and remote controllers 2 When a signal is changed due to noise entry in transmission signal EE When 6600 error occurs release the failure by the remote control stop key control to restart a In the case that the error occurs once again within 5 minutes search for the unit with same address as that of the unit from which the error has originated When the same address is identified after correcting the address leave the power sources of outdoor unit indoor unit and Losnay unit
130. monitor is around 0 0 049MPa Confirm a contact failure and disconnection of the connecter and go to d 3 When the pressure displayed on the monitor is 2 96MPa or more Go to 4 In other cases of 1 2 and 3 after refrigerant recovery pressurize nitrogen gas to compare pres sures Go to b b Compare the gauge pressure with the pressure displayed on the monitor in the state of nitrogen gas pressurizing operation After opening the ball valve BV3 charge nitrogen gas 1 When the pressure difference between both pressure is 0 098MPa or less Both the pressure sensor and main board are normal 2 When the pressure difference between both pressures is beyond 0 098MPa The pressure sensor is faulty Characteristical deterioration 3 When the pressure displayed on the monitor does not vary The pressure sensor is faulty c Remove the pressure sensor from the main board to check the pressure displayed on the monitor 1 When the pressure displayed on the monitor is around 0 0 098MPa The pressure sensor is faulty 2 When the pressure displayed on the monitor is around 2 96MPa The main board is faulty d Remove the pressure sensor from the main board to check the pressure displayed on the monitor by a short circuit between the connecter PS1 No 2 and No 3 1 When the pressure displayed on the monitor is 2 96MPa or more The pressure sensor is faulty 2 In other cases of 1 above The main board is faul
131. n 2 Low pressure sensor 63LS 1 Check low pressure in comparison to detected pressure with the sensor a Compare gauge pressure with monitored pressure in operation conditions When the gauge pressure is around 0 0 098MPa gt Decrease in inner pressure due to gas leak e When the monitored pressure is around 0 0 098MPa Contact failure of the connecter Go to d after confirmation of the contact failure The monitored pressure is 2 96MPa or more Go to c e n other cases than those above compare pressure on an actual operation Go to b b Compare gauge pressure with monitored pressure in operation conditions When the pressure difference between the two is within 0 Both high pressure sensor and main board are normal e When the pressure difference between the two is beyond 0 03MPa High pressure sensor failure Characteristics deterioration e When no pressure difference between the two is found High pressure sensor failure c Remove the low pressure sensor from the main board and check the monitored pressure e monitored pressure is around 0 0 098MPa Low pressure sensor failure he monitored pressure is around 2 96MPa Main board failure At the outdoor temperature of 30 or below Main board failure At the outdoor temperature of above 30 C Go to d Remove the low pressure sensor from the main board and check the monitored pressure with the connecter 6
132. n valve lt 1 gt 66 7 Detecting circulation composition CS circuit 67 8 Distributed washing control and flow rate control Indoor unit 67 GOON untan COMPO c M 67 Operation Flow Chart e 68 Flushing TENTE T Lm 68 2 Flow chart of flushing operation 69 TROUBIES MOOT ING a adne Ea oR 70 MEE T E E Ean ei EEE E AEEA E Ep EEn Enea 70 2 Self diagnosis and countermeasure for malfunction and failure indicated by 72 Investigation of transmission wave 87 4 Troubleshooting for major parts of outdoor unit and indoor unit 97 SEE ITA TE Ut ____________ __ 105 WES ie Tir DERE mcm 111 Monitor Display of Mineral Oil Recovery Operation by Outdoor Board LED 112 1 How to view LED for service 112 2 Synoptic table of the monitor display of mineral oil recovery operation by outdoor board LED 112 IX Maintenance and Checking sss 113 1 Maintenance and checking period 2224222 113 2 Maintenance and checking procedure for major parts for the oil trap kit
133. nce at both ends of R7 Except the above mentioned Replace R7 7 Check the resistance at both ends of F01 00 to No 8 on the INV board Except the above mentioned Replace 01 8 Check the voltage between pins 1 and AC198 264V Replace the INV board 2 on the INV board Except the above mentioned to No 9 9 Check the voltage between L2 and N on AC198 264V Check the wiring to CNAC2 for the following and power supply terminal block TB1 correct any defects Broken wire faulty contact Except the above mentioned 90 Check the power supply wiring and base power supply and correct any defects 3 Trouble and remedy of remote controller In the case of MA remote controller Phenomena Factors Check method and handling 1 If pushing the remote 1 Power supply from transformers is not turned on in in a Check the MA remote control terminal volt control operation SW door unit age between A and B does not make a D The original power supply of indoor unit is not turned In the case of voltage DC8 5 12V sound such as feep on the remote controller is defective with the crystal display 2 The connector CND CNT CN3T on the controller ii In the case of voltage not available lamp out and no op board in the room has come off Check the left described 1 and 3 af erate is possible 3 Fuse on the control board in Indoor Unit has melting ter checking if these are f
134. nction af ter powering outdoor unit again NO Changed Faulty outdoor unit Accidental trouble Repair faulty point control circuit board 1 Check the transformer in accordance with the TROUBLESHOOTING in the indoor unit s service handbook Changed Faulty indoor controller board 94 Symptom Cause HO display on re mote Without using MELANS controller does not dis 1 Outdoor unit address is set to 00 appear and ON OFF 2 Erroneous address switch is ineffective CD Address setting of indoor unit to be coupled with remote controller incorrect Indoor unit 2 remote controller 100 2 Address setting of remote controller incorrect Remote controller indoor unit 100 3 Faulty wiring of transmission terminal block TB5 of indoor unit in the same group with remote controller 4 Centralized control SW2 1 of outdoor unit is turned ON 5 Setting to interlocking system from indoor unit Switch 3 1 OFF while Fresh Master is intended to be use by remote controller operation indoor unit attribute 6 Disconnection or faulty wiring of indoor unit transmission line 7 Disconnection between indoor unit M NET transmission line terminal block TB5 and connector CN2M 8 More than 2 sets of power supply connector CN40 are inserted into centralized control transmission line of outdoor unit 9 Faulty outdoor unit control circuit board 10 Faulty indoor controller board 11 F
135. nd failure indicated by PC 72 Investigation of transmission wave 87 4 Troubleshooting for major parts of outdoor unit and indoor unit 97 MM UMEN 105 NR omm m 111 Vill Monitor Display of Mineral Oil Recovery Operation by Outdoor Board LED 112 1 How to view LED TOF Service monitor 112 2 Synoptic table of the monitor display of mineral oil recovery operation by outdoor board LED 112 IX Maintenance and Checking 113 1 Maintenance and checking 113 2 Maintenance and checking procedure for major parts for the oil trap kit 114 Procedure for maintenance and checking of the portable refractometer 118 4 Cautions when replacing the outdoor unit main 118 X Information on Rating Plate 119 Simplified Judgment for Reuse of Existing Piping Wiring Judgment for Reuse of Existing Piping 1 Reusing CITY MULTI air conditioner system 2 Reusing other makes or Mitsubishi other than CITY MULTI Connection Range of Deformed Piping Judgment for Reuse of Existing Transmission Line Wiring Judgment for Reuse of Existing Piping Both the chec
136. nd water 4 Store the oil trap kit flexible tube with their original packing Do not lose the packing materials as they are to be used for storing Oil trap kit Applied corrugated cardboard to upper part wooden frames to lower part and fixed with PP band Flexible tube Packed with corrugated cardboard 18 Ill Work Procedure of Mineral Oil Recovery Operation 1 Workflow For P200 P250YREM A Work flow Items to be verified Carry in the oil trap kit 1 set Check the necessary parts P20 amp check the work preparation P21 replace tank PC and tools Install the oil trap kit replace tank and PC Turn the outdoor unit power source off Mount the replace tank to the oil trap kit Connect the outdoor unit valve mounted to the extended piping and oil trap kit with piping flexible tube Conduct airtight test and evacuation the piping flexible tube between the outdoor unit valve mounted to the extended piping and oil trap kit Open the ball valve in the order of oil trap kit 1 4 extended piping outdoor unit 1 and 4 For the oil trap kit apply from L1 and N of outdoor unit supply or a separate 220 240V supply power source of the outdoor unit and the transmission line from the outdoor unit TB3 Connect the oil trap kit and PC The system controller and MA remote controller may be required to be remove For detail refer to 1 5 Piping connection 6 7 Piping connection
137. nfirming the con nection of the system controller to transmis sion terminal block Confirming MA remote controller 1 Confirming by observ ing refrigerant system diagram 2 Confirming the field connection 1 Check whether system controller is connected to indoor outdoor transmission line 2 The system controller that turns the power source off when turning the outdoor unit power source off is connected to the indoor system Power supply from outdoor unit 3 Check MA remote controller for grouping with different refrigerant circuits 1 2 3 Remove the system control ler connected to the indoor outdoor transmission line and MA remote controller grouped with different re frigerants Reconnect them after flushing operation Only required when indoor unit under Ver30 LOSSNAY with heating humidifier under Ver8 08 is existing Re moval is indicated on the PC Screen Confirming the inner pressure of oil trap kit 1 Confirming with pres sure gauge 1 Check whether the reading of pressure gauge inside oil trap kit is lower than 0 049 0 294MPa Refer to the countermeasure by con firming the oil trap kit inner pressure shown on the next page Confirming the oil recovery of oil trap kit 1 Confirming the oper ation of oil recovery service valve 1 Open the oil recovery service valve and check whether the liq uid recovered oil flows out con tinually under liquid state
138. nication abnormal setting and abnormal transmission 6600 Multiple address abnormality 6601 Communication error Polarity unsettled 6602 Transmission processor hardware abnormality 6603 Transmission circuit bus busy abnormality 6606 Communications with transmission processor abnormality 6607 No ACK abnormality 6608 No response abnormality 6831 MA Communication no reception error 6832 MA Communication synchronization recovery error 6833 MA Communication transmission reception hardware error 6834 MA Communication start bit error 7100 Total capacity abnormality 7101 Capacity code abnormality 7102 Connected unit count over 7105 Address setting abnormality 7106 Characteristics setting abnormality 7107 Connection number setting abnormality 7111 Remote control sensor abnormality 7113 Functional restriction error 7130 Different unit model error d 2 Self diagnosis and countermeasure for malfunction and failure indicated by PC 1 Mechanical system Check codes Meaning Detection means Trouble factors Checking method and countermeasure 0403 Serial transmission abnormality If serial transmission cannot be estab lished between the MAIN and INV boards 1 Wiring is defective 2 Switches are set wrong on the INV board 3 The fuse F01 on the INV board is
139. nsion valve lt SLEV gt As for oil return valve opening SLEV is 64 However when discharge temperature TH1 exceeds 95 or more during recovery mode Refrigeration recovery SLEV is 200 As for the valve opening while the compressor is shutdown SLEV is O 5 Outdoor fan control e The outdoor fan is controlled so that pressure value may come close to the target value according to the high pressure value 63HS of the outdoor unit Pressure is controlled every 20 seconds The rise of discharge temperature TH1 and high pressure 63HS is controlled Discharge temperature is controlled every 30 seconds 40 TH6 Phase control 1 Outdoor fan control on start up 40 TH6 30 40 After the outdoor fan starts during flushing mode the fan 30 TH6 2 20 3096 operates for 15 minutes according to outdoor air tempera 20 TH6 2 10 20 2 3 10 gt TH6 0 ture TH6 as shown right e The phase on the start up of outdoor fan during recovery mode refrigerant recovery is controlled as follows Outdoor unit Outdoor air temperature TH6 Phase control Below 5 C 5096 Above 5 C 8096 Model P250 or under The outdoor fan stops while the compressor is stopped However the phase is controlled to be 100 for 1 minute during recovery mode Refrigerant Limitation on discharge temperature e When discharge temperature TH1 during flushing mode reflushing is
140. nt damage to the unit Symbols used in the illustrations Indicates an action that must be avoided Indicates that important instructions must be followed Indicates a part which must be grounded Beware of electric shock This symbol is displayed on the main unit label Color Yellow 5NWarning Carefully read the labels affixed to the main unit Warning Ask your dealer or specialized contractor for When refrigerant gas is leaked during work installation conduct ventilation e f your own installation work is improper fire electric e f refrigerant gas comes into contact with fire it may shock or water leakage may result cause the generation of poisonous gases Connect wiring using the specified cable and fas Please conduct correct installation work by ten it securely to prevent the external force of observing this Installation Manual the cable from being transferred to the terminal Improper installation work may result in water leak connecting sections age electric shock or fire e Improper connection or fastening may cause heat generation or fire Conduct all electrical work by a licensed en gineer according to Technical Standard re Conduct specified installation work durable lating to Electrical Facility Wiring Regula against strong winds around buildings tion of Power and instructions in Improper installation work can cause trouble i e the this Manual and
141. ntrol is not con nected to the terminal block TB3 for in door and outdoor transmission line by mis take If no problem is found with a c itis a con trol board failure of outdoor units or heat stor age tank units When the power source for heat storage tank units is turned on later than outdoor units a failure indication may be temporarily dis played on the screen for about 3 minutes However in about 3 minutes it returns to nor mal Check codes Meaning Detection means Trouble factors Checking method and countermeasure 7105 Outdoor unit Address setting error Address setting of outdoor units is wrong Address setting of heat storage tank units is wrong 1 Address setting error of outdoor units An address of 000 for outdoor unit is not set or the address is not set within the range of 51 100 2 Address setting error of heat storage tank units An address of 000 for heat storage tank unit is not set or the address is not set within the range of 51 100 a Make sure the addresses of outdoor units and heat storage tank units are set to 00 or 51 100 When the addresses are set out of the range make settings again in the state that the power source is cut off OA pro cessing unit Attribute setting error Switch setting of outdoor air processing unit is wrong Despite that the outdoor air processing is in the attribute FU mode Interlocking mode
142. ocess is bellow 10 C at the start up of compressor After shutdown OFF OFF During recovery mode Outdoor unit ON for 2 minutes OFF Refrigerant recovery 1 Oil trap kit Always ON OFF During suspended recovery mode Outdoor unit Always ON Always ON Refrigerant recovery Oil trap kit OFF 1 Activation example of SV1 Re Compressor 2 Bypass solenoid Outdoor unit 22 22 0002 valve SV1 2 minutes trap xix R Always ON 2 Control of heat exchanger capacity valves SV3 4 All valves of SV3 4 are opened in the ON position Outdoor unit e 5 3 4 are opened Except for during a stop 3 Low pressure control valves SV3 5 All valves of SV3 5 are opened in the ON position Oil trap kit e The low pressure valves SV3 5 are controlled so that the value may come close to the target value according to the value of the low pressure 63LS of outdoor unit The valves are controlled every 30 sec e At the start up of compressor during flushing mode only SV3 is opened e During recovery mode Refrigerant recovery all valves SV3 5 are closed 64 4 Refrigerant recovery control valves SV6 7 All valves SV6 and 7 are opened in the ON position Oil trap kit Items SV6 SV7 During flushing mode re flushing Always ON Always OFF During recovery mode refrigerant recovery Always OFF 1 Always ON 2 1 The SV6 is set to be opened until specifi
143. oling fan is continuously running for 5 minutes or more and at the same time heat sink temperature THHS exceeds 95 C while the inverter is working 1 Power source environment Confirmation of power source voltage Make sure each inter phase power voltage is 180V or more 2 Clog in air trunk Check if clog is found in the cooling air trunk for the heat sink 3 Wiring failure Checking of wiring for the cooling fan 4 THHS failure Checking of THHS sensor resistance 5 Output failure in the INV board fan Confirm if heat sink temperature is 55 C or more and 200V is applied to the inverter board connecter CNFAN while the inverter is working 6 Cooling fan failure Confirmation of the cooling fan operation under the above running condition 7 IPM error Refer to VII 5 2 2 Checking of compressor earth fault and winding wire failure 5 Checking of inverter circuit trouble 4240 Overload protection When output current lac is over Imax Amps or THHS is 85 C or more for consecutive 10 minutes while the inverter is working For model P140 P160 P244 Imax 35Amps For model P280 and P450 Imax is 41Amps For model P355 P500 P560 Imax is 50Amps 1 Air trunk short cycle Check if the exhaust air of unit fan is not short circuited 2 Clog in air trunk Check if the heat sink air trunk is not found clogged 3 Power source Make sure power
144. ommended O S Windows95 98 NT 4 0 2000 ME XP 5 Software Mineral oil recovery Exclusive S W for Replace operation software Caution Install on PC before mineral oil recovery 6 Connecting cable RS 232C connection of 5 232 cross cable within 15m field supply oil trap kit and PC Oil trap kit connector specification D SUB25 Pin type female connector DTE Caution Select RS 232 cable depending on the type of the serial interface of PC 7 Power source wiring Connection to oil trap kit 1 5mm or more field supply Jumper from outdoor unit Power supply cord parts of appliances for heat source shall not be lighter than polychloroprene sheathed flexible cord design 245IEC57 8 Control wiring 1 25 or more field supply 2 core cable VCTF VCTEK CVV CVS VVF VCT or shielded wire CVVS CPEVS 9 Oil pan field supply Mineral oil recovery vessel Vessel with more than 2L capacity is required 10 Refrigerant piping Verification of connection with Refrigerant piping wiring system diagrams are Wiring system diagram system controller others required for each system 11 Ester oil check kit To judge proper oil recovery Vessel 1 pc bottles 2 pcs 1 pc with oil charged 1 set for PAC KP95ECK Use when the refrige rating machine oil used by conventional system is the mineral oil at oil inspection about one month after flushing operation executed 1 outdoor unit 12
145. on does not appear within about 3 min utes after stopping To suspend the operation click Finish Caution At the restarting after pausing the work the op eration restarts from one step before that paused about 5 minutes after operating for initial pro cessing for about 15 minutes At erroneous input or when abnormality is detected during operation a message corresponding to the content of erroneous input or abnormality will be displayed Conduct input and inspection work by following the message displayed on the screen Display example of erroneous input Erroneous input of self address REPLACE Setting screen B Selfaddress 051 51 address1 52 emea OTK address Group 1 crece UR e oo 4 o0 amp oo amp oo foo amp oo s oo 10 o0 Group 2 QJ 1 eMe xi 10 00 Group 3 Self address is duplicated with OC address J 1 00 2 63 ulia 10 o0 Group 4 QU 1foo 2 gfoo 10 00 output file set output file name 20040119 csv reference output interval 10 sec 10 600 Start 1 19 2004 3 32 PM Display example of detecting abnormality Detection of abnormal high pressure Error code 1302 Error stopping made E E X High pressure error detected 1302 63 Refer ta Service Handbook Mineral oil recovery work hM anual Stopping refrigerant rec
146. ontrol in cooling operation air flow may automatically change its blowing di rection horizontally While defrosting in heating operation in Hot ad just operation and while the thermostat is OFF air flow automatically becomes horizontal The wind velocity setting is switched during heating operation Normal indication While the thermostat is OFF air flow speed is in the Very low position While the thermostat is ON Very low position is automatically switched to the set position depending on time or pipe temperature The fan stops during heating op Defrosting In defrosting operation the fan stops eration Even with the operation of unit Light out When the auxiliary electric heater is ON the fan operates for one minute stopped the fan keeps running after it stops to cool down remaining heat Even with the operation SW switched to the ON position air ve locity does not reach the setting value In preparation for heating Normal indication For 5 minutes after the switch is ON or until the pipe temperature reaches 35 C air speed is in the Very low position then for 2 minutes it is in the Low position Hot adjust control In operation outdoor units do not operate Normal indication When the outdoor unit experiences very low temperatures i e danger of liquid refrigerant being present in the compressor a warming up op eration is performed for 35 minutes at the longest in order to he
147. or more Never put them in a same conduit 2 Wiring of transmission line with that of other system in bundle Wire transmission line isolating from other transmission line Wiring in bundle may cause erroneous operation like crosstalk Use of shield wire for transmission line for both indoor unit control and centralized control Use specified transmission wire Type Shield line CVVS CPEVS Wire diameter 1 25 2 or more 2 Repeating of shield at the repeating of transmission line with indoor unit The transmission line is wired with 2 jumper system Wire the shield with jumper system as same for transmission line When the jumper wiring is not applied to the shield the effect against noise will be reduced 5 Are the unit and transmission lines grounded as instructed in the INSTALLATION MANUAL Connect to ground as shown in the INSTALLATION MANUAL Check for earthing 6 Earthing of the shield of transmission line for indoor unit control to outdoor unit One point earthing should be made at outdoor unit Without earthing transmission signal may be changed as the noise on the transmission line has no way to escape Arrangement for the shield of transmission line for centralized control For the shield earth of the transmission line for centralized control the effect of noise can be minimized if it is from one of the outdoor units in case of the group operation with different re
148. ose the oil trap kit unit kit falling or toppling over especially electrical parts to rain water Turn the power source on 12 hours or more before starting operation Otherwise trouble may be caused Do not turn the power off during the operating season Do not operate the unit without the panels or Touching the rotating parts high temperature parts or high voltage may cause personal injury such as burns or electric shock Do not operate switches with wet fingers Electric shock may be caused f this happens the oil trap kit may be damaged and refrigerant piping may malfunction Falling down during flushing operation causes the leak of refrigerant from the joint which is dangerous if contacts it human body After flushing operation check the residual pres sure inside the oil trap kit with a pressure gauge If the residual pressure is exceeding 0 294MPa recover refrigerant inside the oil trap kit to reduce the pressure to within 0 2 0 294MPa Under high inner pressure pressure rises during storing inducing a dangerous situation Under low inner pressure water content or foreign matter enters during storing causing corrosion to the oil trap kit which may cause troubles The electrical parts if wet with rain water may cause machine trouble The electrical parts if wet with rain water may cause electrical shock Conduct oil recovery from the oil recovery ser vice valve outdoor or
149. out when the target flow rate fails to be achieved in 1 Flushing mode mode Refrigerant recovery in the oil trap kit NG mode Dilution of concentrated mineral oil in ester oil Note Above 4 NG mode is available only when mineral oil recovery operation is completed 68 2 Flow chart of flushing operation Mode determination flow NO Breaker ON At abnormal operation YES HO blinking indication on the room temp indicator of the remote control ndoor unit to the remote NO At normal operation PC S W start up Inputting the address of oil trap kit and outdoor unit Monitoring NO information on connec tion of outdoor unit YES Identification of IC address Requirement for check mode for outdoor unit Monitoring information on the connection of indoor unit Monitoring the versions and model names of outdoor and indoor units Confirmation of switching motion of the solenoid valve of oil trap kit YES NO Taking in information on the data on previous flushing and development in midstream Note Data on completed 1 In the event of ine out Starting and flushing available door unit indicates on the restarting flushing Screen operatio Data on completed flushing unavailable 2 Addresses and group information of the ou
150. overy made Entering into 3 minute restart prohibit made Thereafter press Refrigerant recovery button 41 Display of insufficient flow rate during backup control Backup control The backup control includes that for high pressure discharge temperature compressor shell temperature radiator plate temperature THHS and secondary current bus current and the item presently backed up is shown in red color The red color display continues until returning to normal control REPLACE screen ROUND 1 STEP 2 x Flushing mode moniter Insufficient flow rate When an extremely insufficient flow rate is detected during flushing operation the following message is dis played Execute inspection and countermeasure by following the message displayed on the screen As the low pressure 63LS may drop depending on the initial refrigerant status for 30 minutes after start of flushing operation please take proper measures while observing the operating condition REPLACE Main screen ROUND 2 STEP 4 mode moniter 42 Display at operation status confirmation and abnormal history The operating status of OC and IC while confirming their operation may be monitored Do not remove the transmission line of OTK after flushig operation and refrigerant recovery Note Effective only to monitor the operating status by using PC
151. ower source terminal block TB1 to the board CN20 TB1 CN20 L1 7 pin L2 5 pin D L3 3 pin c 2 Main board failure When no failure is found with the above it is a main board failure 2 The unit does not operate due the open 1 Power source failure Checking of the input voltage of the power 2 phase of any in power sources a Negative phase in power source volt source terminal block TB1 L1 L2 L3 N age b Power source voltage drop 3 2 Abnormal wiring Checking of the voltage among pins 3 5 a Between the voltage terminal block and and 7 of the main board connecter CN20 the main board CN20 If the voltage is less than power source voltage 10 V it is a wiring failure lt b Between the high pressure relay 63H Confirm if the main board connecter CN38 and the main board CN38 is not slipped off Confirm if the wiring to CN38 is not open 3 The fuse for the main board is broken Confirm if the main board fuses 01 and F02 are not broken 4 The main board failure If no problem is found it is a main board failure 4106 amp 1 The unit can not operate due to electric 1 Power source environment Confirmation of generation of electric power E power failure instantaneous stopping of failure instantaneous stopping of electric 5 electric power power at the time when any trouble is de sg tected 2a Confirm if inter phase power source volt S age is power source voltage
152. parts for the oil trap kit 2 1 Preparation before checking work 1 Parts list Name of part Application Specifications Number of pieces 1 PC Confirmation of solenoid valve failure Same specifications as PC for mineral Field supply oil recovery operation 2 Software Software for checking S W exclusively for replacement 3 Connection cable Connection with RS 232C between Same specifications as cable for min Field supply the oil trap kit and PC eral oil recovery operation 4 Powering for transmission line Powering for transmission of the oil trap kit Feed unit for transmission line 1 Field supply PAC SC34KUA 5 Power source wiring Power source supply to the oil trap kit Wire thickness for power 1 Field supply 4 powering unit for transmission line 2 pieces 6 Control wire Connection between the oil trap kit and 4 Wire thickness for control 01 25 Field supply powering unit for transmission line Trans 2 pieces mission line 2 Connection of electric wiring 1 Connect AC220 240V power wiring to the powering unit for transmission line and the terminal block for power source of the oil trap kit 2 Connect the transmission line to the terminal block for the powering unit for transmission line and the oil trap kit 3 Connect RS 232C connection cable corresponding to PC to the terminal block for PC connection of the oil trap kit Powering
153. pe applied with pressure loss like the multi distributor of SLIM can not be used ment with new branch pipe is required in this case Estimate the branch configuration and piping size depending on the maker name model name and con necting quantity of existing products 4 Confirm that the piping diameter piping length height difference etc are within our operating range For other refrigerating machine oil than the Item index of judgment for reusing of existing piping Items Judgment standard Indirect material for judgment Piping diameter length Refer to DATA BOOK None Type of refrigerating machine oil SUNISO MS HAB Barrel Freeze Freol Maker type model name year of manufacturing Air tightness No pressure drop by leaving for one day after pressurizing to 2 98Mpa Operability of previous unit Distributor configuration T fitting Y fitting Header branching Maker type model name year of manufacturing Thermal insulation No peeling off of thermal insulation and caulking None Piping system Unit height difference should be within the standard of typical unit None Pipe thickness Pipe thickness equivalent to the standard of each country Simplified judgment for reuse of existing piping Flow Do you know the type of refrigerating machine oil used by the old unit YES Check it by asking the maker dust or the like refrain YES
154. peration Observe a safe distance from the indoor unit fan which runs during the mineral oil recov ery operation Working in the surrounding of the indoor unit fan can cause personal injury Record the quantity of refrigerant replenished Enter into the column for replenished refrigerant quantity on the label of the indoor unit Missing the description may deteriorate the perfor mance of mineral oil recovery Malfunction or poor cooling heating may also be caused During the mineral oil recovery operation an error display may be shown on the remote controller or system controller When an error display was shown during mineral oil recovery operation reset the error display after fin ishing the operation To conduct the refrigerant recovery evacua tion of the inside of exiting piping choose tools only used with R407C e g charging hose Using a charging hose for R407C causes it to mix the conventional refrigerating machine oil leading to the deterioration of refrigerating machine oil Before Conducting Installation Work Electrical Work Do not install the unit at a place where com bustible gas can possibly be generated e Leaked combustible gas if stagnated around the unit may cause explosion Do not use the unit in a special atmosphere Use in an atmosphere containing high levels of oil steam or sulfide gas may seriously degrades the per formance or damage parts Do not install the uni
155. peration switch ON the display distin guishes and the opera tion stops Power source is not fed to indoor unit from transformer CD Main power source of indoor unit is not turned on 2 Disconnection of connector CNT on indoor controller board 3 Blown fuse on indoor controller board 4 Faulty or disconnected transformer of indoor unit 5 Faulty indoor controller board Faulty outdoor control circuit board uncontrolled As normal transmission is fails between indoor and outdoor units outdoor unit model can not be recognized Check method and handling Check indoor LED3 lt lt s or Lighting unable to confirm Check indoor unit power source terminal block voltage NO AC 220 240V ES Check fuse on circuit board YES heck main power source of power source wiring Apply power source again Check 220V 240V circuit for short circuit and ground fault Check connection of con nector CND CNT YES Disconnected Improper connector connection Check transformer amp 1 resistance value Check cause of trans former disconnection Ground fault on circuit NO Within rated YES Check self diagnosis function of outdoor unit board Ground fault on sensor LEV i Check for the change of LED display by operating dip switch SW1 for self diagnosis 5 Check self diagnosis fu
156. ppearance Storing position Provided inside Provided inside piping cover piping cover Quantity 1pc 1pc Appearance 5 A T T TT lt gt Storing position Provided at the control box bottom Provided at the control box bottom Provided at the control box bottom Quantity 1 Service parts code 1pc 1pc 4pcs R61 M03 622 Service model name code W650296G01 2 The packing is provided for 5 pcs mineral oil recovery for 1 time Please purchase additional packing if required Service parts code R61 F14 514 Service model name code P321009X01 17 Il Carrying Storing the Oil Trap Kit Piping cover Knob Knob Name plate Unscrewing the screws at 4 spots allows using the handle Handle els removed D Knob EN LA Caster with stopper Swivel side gt 1 Transportation by vehicles For the transportation by vehicles ensure that sufficient care has been paid to the with standing force of the product However please observe the items below and pay careful attention to prevent the product from falling down or being damaged 1 When carrying the product while being laid down locate the name plate on the up side Do not place any goods on the sheet metal surface Reason The letters on the name plate can not be read The inner piping may be deformed leading to damage 2 Do not locate the piping cover downward T
157. pressure 63HS LJ 0 1V 0 098MPa sensor ie Black Vout White Vcc DC5V Red 1 Detecting low pressure Pressure 0 0 98MPa 2 Calculating refrigerant Vout 0 5 3 5V Low pressure circulating composition 0 1V 0 098MPa 63LS sensor 3 Protecting low pressure GND Black Vout White Vcc DC5V Red Pressure 63H 1 Detecting high pressure 2 94MPa OFF setting Checking continuity switch 2 Protecting high pressure 1 Detecting discharge R120 7 465kQ temperature R25 120 4057 2 Protecting high pressure Rt TH1 1 1 Checking resistance discharge 20C 250kQ 70 34kQ 7 465 4057 2734t 393 value 30C 160kQ2 80 C 24kQ 40 104 0 90 C 17 5kQ 100 C 13 0kQ 60C 48kQ 110C 9 8kQ 1 Detecting saturated Ro Thermistor evaporating temperature 39638 2 Calculating refrigerant Rt circulating composition 1 1 Checking resistance TH2 3963 273 1 273 value 20C 92kQ 10 20kQ 10C 55kQ 20 C 13kQ 30C 82kQ TH5 Detecting heat exchanger Ro 2 15 piping temp outlet temp B1 80 3460 Rt TH6 Detecting OA temp 15exp 3460 1 1 OA temp P 27341 273 Checking resistance TH7 Detecting Scc liquid outlet OC 15kQ 25 C 5 3kQ value temp 10 9 7kD 30 4 20C 6 A4kQ 40C 4 Detecting Scc bypass outlet temp 61 Symbol function Parts code Application Specification
158. r confirm the action with the sound of solenoid valve action 2 Switching of operation condition by solenoid valve action can be confirmed by the temperature of the bypass circuit or the sound of refrigerant flow 2 For SV2 Bypass valve 1 Since SV2 is ON for 4 minutes after starting the compressor confirm the action with the sound of solenoid valve action 2 Switching of operation condition by solenoid valve action can be confirmed by the temperature of the bypass circuit or the sound of refrigerant flow 3 For 2154 4 way valve The 4 way valve is At no powering Powering between the oil separator outlet and the heat exchanger and between the gas OFF ball valve BV1 and the accumulator in cooling cycle At powering Powering between the oil separator and the gas ball valve and between the heat ex ON changer and the accumulator in heating cycle You can confirm if the 4 way valve is working normally by checking which part is powering with the LED indication and actual inlet and outlet temperature of the 4 way valve Be sure not to cause any damage to the outer shell of the valve from outside as deformation of the outer shell may cause a malfunction and miss operation of the inner valve 4 3 Outdoor unit fan As the fan revolution speed of outdoor unit is controlled by the phase control system check the fan revolution speed by confirming the output state of the phase control output on the monitor tool The revolution
159. r less during operation OH LED5 lighting Heating Heat sink thermostat actuates at 100 C All lighting Instantaneous stopping of electric power electric power failure open phase power source voltage increase decrease All blinking Actuation of heat sink thermostat just before start ing instantaneous stopping of electric power elec tric power failure open phase power source volt age increase decrease intermittent fault check As for checking method and treatment of Active filter failure refer to Active Filter Service Handbook which is separately dis tributed or Active Filter Installation and In struction Manual which is attached to Ac tive filter 4220 Bus voltage drop protection Failure details No 108 When detecting Vdc is150V or less while the inverter is operating 1 Power source environment Check if there are instantaneous stopping of electric power power failure etc when a fail ure is detected Check if each interphase volt age is power source voltage 10 V more 2 Detection voltage drop Confirmation of voltage between G A board FNO1 and 2 If the voltage drops go to 3 Check the voltage at the part of the G A board CNDC1 If the voltage drops replace the G A board Check the voltage at the part of the INV board connecter CNDC2 If the voltage drops it is a wire connecting failure Check soldering at the part of the INV
160. r semi disconnection 10 9 7kQ 40 C 3 1kQ 5102 Liquid pipe function is restored after 3 minutes 4 No installation of thermo 20 6 4kQ from suspension the indoor unit sensor or contact failure is stops irregularly If restored the outdoor unit operates normally 5 Indoor board Detection circuit Checking of connecter contact 5103 Gas pipe Short Detection of 90 C or more failure If no problem is found it is an indoor board Open Detection of below 40 C failure Sensor failure in the pipe on the gas side is not detected under 1 Connecter CN29 is not firmly Checking of connecter contact gt the following condition connected Replacement of the sensor 5104 5 Outdoor air In heating 8 temp In cooling For 3 minutes after 2 Outdoor air temperature sensor ud the compressor is out of work starts 78 Check codes Meaning Detection means Trouble factors Checking method and countermeasure 5101 Discharge 1 When detecting Short High 1 Thermistor failure Checking of thermister resistance TH1 temperature import or Open Low temperature import while operating 2 Engaged lead wire Checking of engaged lead wire the unit stops irregularly 2 When detecting Short or Open just 3 Damaged cover wire Checking of damaged wire cover 5106 Outdoor before restart the unit stops air temp irregularly At
161. rator 0 51 e Recovery vessel 2 0 52 Bypass valve SV1 Strainer 514 56 3 Control box 1 Appearance Power source terminal block TB1 T nal f Transmission terminal block erminal for TB2 PC connection RS 232C Switching valve SV6 2 Upper side view MN converter Main circuit board Transformer Address setting switch 2 Il Electrical Wiring Diagram TR S Shield ___ and remote controller Outdoor unit TB3 O MN RS 232C Converter Interface CNO3 02 ro ell isi ge oue Qu pe s Lg PE Popeye a N jk REPAIR 1 6d tog i Power Source 220V 240V 50Hz To oil trap kit TBO2 S Notes 1 TBO2is transmission terminal block Never connect power line to it 2 The install set values of switch on CONT B are as follows SW1 0 SW2 0 Symbol explanation Box internal layout Name Transformer MN Converter Pressure sensor Circuit board Oil trap kit TBO2 Terminal block for power source Terminal block for transmission Solenoid valve 58 ircuit Diagram Ill Refrigerant C Entire refrigerant circuit diagram at mineral oil recovery For Models PUHY P200 P250 1
162. re hood displayed on the PC as shown below mount the low outdoor temperature hood provided with the oil trap kit REPLACE screen LEVi 0000 SLEV 0000 2154 SVI SV2 SVB SV4 0 0 D 0 0 21546 SV5b SV22 5 32 oe GR QJ TH 2567 Outdoor unit 51 Monitoring Hz F OC PUHY P250YREM A Ver 02 03E0 Address 51 Power 60Hz Ope Mode Stop DF FP 0 OiR RefR 5 SH TdSH 33 9 Fe 015 THil THI2 342 AQC 0272 AK 0 00 ATHI 706 45 569 v 19 TH8 132 TH4 TH3b Qic 2 SCo 241 TH5 78 THl0 THE 128 5 120 Fave 0 00 5 Pre Install low outdoor temperature hood Press OK button after installing ES 1 9 0 300 5 1 53 63LS 0 44 Bih 5 36 5 SHb 15 2 Flushing mode 23 Main monitor 77 _ Error history __ x3 Finish 119 004 3 43PM 1 Installation condition Mount hood at TH6 20 C or less 2 Mounting method Place the hood to cover the outdoor unit from the top fasten it by putting the spring for fixing between the fin guard at the front and rear sides When it is left for a long time during the night be careful not to loose the springs In the case of P200 250YREM A 2
163. recovery operation 63HS data 99 9 999 9 displayed 63LS data 99 9 999 9 AK data 0 9999 sji IX Maintenance and Checking 1 Maintenance and checking period Carry out maintenance and checking periodically in order to keep this product in good condition for a long time Checking period for a standard maintenance and checking and Maintenance period accompanied by the periodical checking are shown in the following 1 Indication of planning maintenance The following table shows contents of periodical checking in general conditions and its period Checking period and a predicted period maintenance period of the execution of adjustment or part replacement which would be required based on the result of periodical checking As for adjustment for the purpose of preventing part deterioration and performance decrement and for parts replacement after checking run ning hours and duration of service of each part which may reach a range of its wear and failure are pre dicted as follows Table 1 Maintenance and checking period Execution period Maintenance Part name of checking Checking period Maintenance period and checking At the beginning of intermediary stage 1 year 1 year O Strainer Solenoid valve 1 year 20 000 hours Pressure sensor 1 year 5 years In case of maintenance Portable refractometer 1 year not allowed Do not misunderstand that a maintenance p
164. rging hose Ji HIHMHHHHBHHHIg TT 1 LH HH TI HH HT THU EE ag ag S agd Service panel In the case of P200 250YREM A D 72 WV 72 lt gt lt lt A on Upper ball valve 1 To A Lower ball valve 2 To B Ester oil for REPLACE MULTI 48 Work flow Work content Evacuating the inside of charging hose B n c Evacuate the charging hose before and after the ester oil kit for REPLACE MULTI by mounting the valve Caution 1 Evacuating with the ester oil kit for REPLACE MULTI 1 2 laid horizontally discharges the oil together with refrigerant Stand it vertically for evacuation 2 After reaching a vacuum degree of Valve 3 650 evacuate for 5 seconds more and stop the vacuum pump Then leave it for 5 seconds and confirm the vacuum degree does not rise recovery service valve B 3 way joint Gauge manifold Valve 4 y 2 pump Executing additional oil charging by opening valves 1 2 C _ 1
165. rigerant O 5kg Saturated pressure against outdoor inlet dry bulb temperature Gas Abnormal Possibility of liquid sealing ue Pressure MPa Outdoor inlet dry bulb temperature TH6 22 3 Installation space and range of oil trap kit The installation space required for the oil trap kit and for the piping network is as follows The installation can be performed by using the front service space of the outdoor unit In the case when the installation space of the oil trap kit can not be secured due to obstacles install it within the following restrictions on piping length Arrange the installation so that the unit front is not exposed to seasonal winds gusts 1 Restrictions Item Piping length Allowable length Hemarks 5m or less The piping length added with piping length Outd t 9 Height difference a cda and height difference should be less than 5m Outdoor unit lower 5m or less In the case of P200 250YREM A Outdoor unit ale e o 9 Q A 257 SY lt gt 222 222 2 100 un Jm lt gt SS 222 77 7 STAT
166. rnal dimension ZEE ER m 13 1 Specification table 2 External dimension Outline of Flushing Operation 14 Installation Operation Work Parts Provided with Oil Trap 17 1 the Darts provided 17 Il Carrying Storing the Oil Trap 18 1 Transportation vehicles 3e laeta e PRU Bo doldenssstaegidesosaes 18 2 tita mt dns 18 o 5 18 Ill Work Procedure of Mineral Oil Recovery Operation 19 MES qi Jr oot 19 2 items to be checked before do adt i 21 Installation space and range of oil trap 23 1 Restrictions buo SET 24 4 1 Piping connection before flushing operation 4 2 Piping connection after flushing operation 5 NR E 30 5 1 Wiring connection before flushing operation 5 2 Wiring connection after flushing operation 6 Connection work on rainy days
167. rovided with the outdoor unit 3 After air tightness and evacuating the inside of the piping kit open the service valve inside the outdoor unit in the order of the extended piping to the outdoor unit Conduct air tight test and evacuation from the service port of the service valve ball valve at the upper side of the outdoor unit For the work procedure refer to 4 1 3 Air tightening evacuating of flexible tube In the case of P200 250YREM A CTA TPA Ox sns Service port for air tightening evacuating RANA AAS AS UNNNSSNNNNNNY O O O S GI LQ 55 ry 55 RSS 555 8 1 S SS Piping kit i Field work edis Service port for air tightening evacuating Y de Field piping Field piping 29 5 Electrical wiring work 5 1 Wiring connection before flushing operation 1 Wiring connection with outdoor unit 1 Remove the control box cover of the outdoor unit The state within the control box cover is shown below Outdoor unit LILLLLLLLII Oil trap kit TBO1 25 ON TBIA LiLeLs N 00000 Switch Breakers for wiring and current leakage D Earth Power source terminal block TB1 Transmission line terminal block TB3 C Centrali
168. s and tubes In addition be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur ox ides dust dirt shaving particles moisture or any other contaminant Contaminants on the inside of the refrigerant piping may cause the refrigerating machine oil to deterio rate Store the piping to be used during installa tion indoors and keep both ends of the pip ing sealed until just before brazing Store elbows and other joints in a plastic bag f dust dirt or water enters the refrigerant cycle deterioration of the oil and compressor trouble may result Use ester oil ether oil or alkylbenzene small amount as the refrigerating machine oil to coat flares and flange connections The refrigerating machine oil will degrade if it is mixed with a large amount of mineral oil Use liquid refrigerant to seal the system e gas refrigerant is used to seal the system the com position of the refrigerant in the cylinder will change and performance may drop Do not use other refrigerant other than R407C Use of other refrigerants R22 for example may de teriorate refrigerating machine oil due to chlorine generation Caution to Equipment Used for Replacing Use a vacuum pump with reverse flow pro tection Otherwise the vacuum pump oil will reversely flow into the refrigerant circuit causing the possible dete rioration of the refrigerating machine Do not use the following tool
169. s no problem at 5 4 Check to see if the inverter is damaged Perform this check if an error during steady operation Turn on the outdoor unit Check the inverter output voltage e t is recommend to use the tester used to determine the 5 IPM troubleshooting when checking the inverter output voltage Measure when the inverter output frequency is stable CD There is a high possibility of an inverter circuit error if the voltage unbalance across all wiring is greater than the larger of the values represented by 595 or 5V e Refer to item 5 for inverter cir cuit trouble 2 No voltage unbalance across all wir ing 106 See item 2 Proceed to item 5 however if there is no problem at 2 Replace the compressor if there is no problem at 5 Check item Phenomena Treatment 5 CD Check to see if the IPM screw ter 1 Screw terminal is loose Check all IPM screw terminals and Check the in minal is loose tighten verter circuit trouble 2 Check the exterior of the IPM 2 IPM is cracked due to swelling e IPM replacement Check the operation in 3 or 4 after replacing the IPM In the case of an output voltage unbalance or error recurrence Replace the G A board In the case of an output voltage unbalance or error recurrence after replacement Replace the INV board 3 Check the resistances be tween 3 Resistance error between each ter
170. s used for con ventional refrigerant Gauge manifold Charging hose Gas leak detector Reverse flow protector Cap for re frigerant charge Refrigerant recovery de vice Mixing of conventional refrigerant refrigerating ma chine oil may cause to deteriorate the refrigerating machine oil Mixing with water may cause deterioration of the re frigerating machine oil As this refrigerant does not contain chloride the gas leak detector for conventional refrigerant gas can not be used Do not use a charging cylinder Use of a charging cylinder changes the composition of refrigerant resulting in possible performance de terioration More careful management is required for the tools than that for the conventional Dust trash or water content if mixed into the refrig erant circuit may cause to deteriorate the refrigerat ing machine oil Do not operate the valve before conducting mineral oil recovery operation Operating valves before conducting mineral oil recov ery operation may cause a deterioration in the perfor mance of mineral oil recovery For mineral oil recovery operation the sys tem controller and MA remote controller may be required to be remove sometimes Improper handling can lead to an inability to perform oil recovery operation For removal follow the instruction displayed on the PC for mineral oil recovery Mount the controllers again after finishing the oil re o
171. sed in the existing system is mineral oil use the ester oil sampling kit for inspection When the length of piping for reuse is unknown additional refrigerant charge is to be calculated based on the quantity of recovered refrigerant For this reason you are kindly requested to recover all refrigerant inside the existing outdoor Removing the outdoor indoor units re indoor units and extended piping to check and record the quantity The stan mote controllers etc dard of additional refrigerant is Quantity of R22 recovered Charged quantity of existing outdoor unit 3kg Adjust the refrigerant quantity after mineral oil re covery operation x gt amp n gt o o u n Installing the outdoor indoor units remote Outdoor unit controllers etc and executing electrical Confirm the space around the outdoor unit work Verifying the installation space of the oil trap kit Setting the address checking the system Turn the power source and confirm the normality of the system Check the remote controller or outdoor unit for error display Run the indoor unit for fan operation after turning the remote controller on and check the air feeding and direction Do not run the compressor until finishing the mineral oil recovery operation Executing the piping work mounting of E Mount the valves to the field piping extended piping The b
172. smission line Blowout of the fuse for the control board of indoor unit Main unit 84 Confirm where a trouble has occurred among the following locations 1 In overall system 2 In overall refrigerant system 3 Only in the same group 4 Only in one indoor unit In case of overall system and overall refrigerant system Check the self diagnosis LED of outdoor unit Check the items related to outdoor units in the left column In case of only in the same group and only in one indoor unit Check the items related to indoor units in the left column For M NET remote controller system Trouble phenomenon or checking codes Trouble factors Checking method and countermeasure A running indication is dis played on the remote con troller but some of indoor units do not operate The power source for indoor unit is not turned on Address error in indoor unit or remote controller in the same group When grouping units with different refrigerant initial registration is not made with remote controller Blowout of the fuse on the control board of indoor units During mineral oil recovery operation A running indication on the remote controller goes out immediately after the in door unit starts to operate The power source for indoor unit is not turned on Blowout of the fuse for the control board of indoor unit The interface with Losnay can not be properly regis tered
173. smission line terminal block TBO2 the earth line to the earth screw and the power source line to the power source line terminal block TBO1 Connect the earth of shielded wire only to the outdoor unit and apply insulation to the oil trap kit side The state in the termi nal block cover is shown below 4 Connect wiring to the oil trap kit through the square holes two spots at the center on the left panel In this case be careful not to allow wirings to contact each other 30 PC Transmission line black termina terminal block TBO2 B RS 232C amp 01 o 9 N L M2_S Power source line 2 Wiring connection with PC PC connecting terminal RS 232C 1 Connect RS 232C connecting cable field supply suitable for the PC to the PC connecting terminal of the oil trap kit Connection with PC The oil trap kit is equipped with D SUB25pin female connector DTE for the connection to the PC Connect by using RS 232C cross cable length 15m or less marketed 13 11 D SUB 25pin female connector DTE Request In accordance with the type of the serial interface for the PC to be used select the RS 232C cable for use The D SUB connector of the oil trap kit is of 25 pins The standard for selecting RS 232C cable is given below For the connector with a special shape consult the
174. sor ground fault or coil error Disconnect the compressor wiring and check the compressor Meg and coil resistance 1 Compressor Meg failure Error if less than 1MQ When no refrigerant is accumulated in the compressor 2 Compressor coil resistance failure Coil resistance value of 0 480 20 Replace compressor Check whether the refrigerant is accumulating in the compressor again 3 Checking if the inverter is brok en or not Perform this check if an error immediately before or after turning on the compressor Perform the following 1 Reconnect the connector re moved at item 1 2 Disconnect the compressor wir ing 3 Turn on SW1 1 on the INV board Operate the outdoor unit after above steps Check the inverter output voltage e t is recommend to use the tester used to determine the 5 IPM troubleshooting when checking the inverter output voltage Measure when the inverter output frequency is stable CD IPM overcurrent error 4250 detailed No 101 102 103 104 105 106 107 2 There is a high possibility of an inverter circuit error if the voltage unbalance across all wiring is greater than the larger of the values represented by 595 or 5V Refer to item 5 for inverter cir cuit trouble 3 No voltage unbalance across all wir ing see item 2 Proceed to item 5 however if there is no problem at 2 Replace the compressor if there i
175. source voltage is 180V or more 4 Wiring failure Checking of cooling fan wiring 5 THHS failure Checking of THHS sensor resistance 6 Output failure in the INV board fan Check if heat sink temperature is 55 C or more and 200V is applied to the inverter board connecter CNFAN while the inverter is working 7 Cooling fan failure Confirmation of the operation of the cooling fan under the above running condition 8 Current sensor ACCT failure Refer to VII 5 4 Current sensor ACCT 9 Inverter circuit error Refer to VII 5 2 3 Checking if the inverter is broken or not 10 Compressor failure a pum Check if the compressor is abnormally overheated while running Checking of refrigerant circuit at the part of oil return If no problem is found replace the com pressor Check codes Meaning Detection means Trouble factors Checking method and countermeasure 4250 IPM failure When detecting IPM error signal 1 Failures related to inverter VII 5 2 Trouble shooting for trouble 4210 Failure details No 101 output factors related to inverter output Refer to 1 5 2 Same as a failure No 4230 Same as a failure No 4230 Failure in ACCT over When detecting over current cut off 1 Failures related to inverter VII 5 2 Trouble shooting for trouble current cut off 150Apeak or 60Amps by the output factors rela
176. ss of the piping proper Can you cut off the Isolate the branching pipe from branching pipe the refrigerant circuit during mineral oil recovery work Check the air tightness in the field Is there any branching pipe not connected with indoor unit Is the thermal insulation of siping Provide proper thermal insulation Is the rated strength material thickness corroded portion if any kept Use new piping Existing piping can be used Il Connection Range of Deformed Piping 1 List of possibility to connect deformed piping Chart 1 Outdoor First branch A section Y series Table 1 Normal piping Usable without performance deterioration Usable with performance deterioration Refer to DATA BOOK Usable with rule on refrigerant charge Refer to the formula to judge refrigerant charge on the next page Usable with limitation on piping length Possible for liquid piping of 09 52 Not connectable Limitation on mineral oil recovery work process Gas pipe gt Liquid pipe This list is presented just for your reference even the item marked x may be accept able occasionally depending on the specific field piping condition Therefore please ask the factory individually in such case x gt 2 Branch indoor f sect
177. t for reuse of existing transmission line wiring Checking item Result Remarks 1 Remote controller line MA remote controller 3 Number of wire number of pole 4 Type of wire Shielded wire used not used 1 Length m 2 Wire diameter mm Pole Used Not used 2 Remote controller line M NET remote controller 1 1 m 2 Wire diameter mm 3 Number of wire number of pole Pole 4 Type of wire Shielded wire used not used Used Not used 3 Remote controller line System controller 1 Length 1 m 2 Wire diameter mm Number of wire number of pole Pole 4 Type of wire Shielded wire used not used Used Not used 2 S 4 b System controller connection Indoor system centralized system Indoor Centralized 4 Indoor outdoor transmission line 1 Refrigerant system Single Plural Single Plural 2 Transmission line farthest length 1 m 3 Wire diameter mm 4 Number of wire Number of pole Pole 5 Type of wire Shielded wire used not used Used Not used 6 Number of connected indoor units Unit 5 Centralized transmission line 1 Transmission line farthest length 1 m 2 Wire diameter mm 3 Number of wire Number of pole Pole 4 Type of wire Shielded wire used not used Used Not used 6 Availability of system diagram YES NO Please try to obtain it much
178. t in that order The reverse order if applied may damage the compressor Never attempt to purge air by using refrigerant EIE D 2 Oil trap kit System analyzer T joint Valve OF Vacuum pump R407C cylinder _______ Scale 1 N Caution Use a vacuum pump with reverse flow protector Otherwise the vacuum pump oil flows in reverse direction into the refrigerant circuit which may cause deterioration of the refrigerating machine oil of the equipment 1 Use a scale with high accuracy measurable up to 0 1 2 Use a vacuum gauge equipped with reverse flow protector Recommended vacuum gauge ROBINAIR 14010 Thermistor Vacuum Gauge Employ a vacuum pump that indicates 65Pa abs or less after operation for 5 minutes Note Use the parts such as a gauge manifold and charging hose only for specified refrigerant shown on the equipment 28 4 2 Piping connection after flushing operation 1 Piping connection with outdoor unit To connect the piping kit field work with the outdoor unit connect piping by following the procedure below 1 After closing the service valve ball valve of the outdoor unit valve mounted to the extended piping and oil trap kit remove the piping connecting the outdoor unit valve mounted to the extended piping and oil trap kit 2 Connect the piping kit field work to the outdoor unit In this case use the parts short copper pipe flare p
179. t on a material which is not designed to be wet e f liquid drips from the oil trap kit apply centralised drainage work to the oil trap kit Apply grounding work securely Do not connect the grounding line to gas pipe city water pipe lightning rod or telephone grounding line Improper grounding may cause electric shock For the power source wiring refrain from giving tensile force to the wiring Disconnection heat generation or fire may be caused Make sure to mount a leak breaker to the power source Otherwise electric shock may be caused Be sufficiently careful in transporting products Do not transport a product with a weight exceeding 20kg by a single person When installing the unit in hospitals or com munication equipment plants prepare mea sures to prevent noise generation before hand he noise may cause the erroneous operation or failure and may give negative effect to medial equip ment or communication equipment to disturb medi cal treatment on human bodies or hinders image broadcasting or generates noise Check possibility for the reuse of existing refrigerant piping by observing this manual conventional refrigerating machine oil is con tained inside existing piping and some residual oil deteriorates oil recovery performance which may lead to the deterioration of refrigerating machine oil The piping specification diameter length height difference out of the use spe
180. tdoor unit and remote control are searched for about 5 minutes af ter power on In the meantime an indication on the remote con trol blinks on and off When indoor Flushing mode Re flushing mode units are not grouped in the remote control the indication HO on the re mote control continues to blink on and y off even after 6 minutes elapses 3 Flushing operation follows a mode Completion of the check mode of outdoor unit command from PC Restoration of information on the connection to outdoor unit 69 Vil Troubleshooting 1 List of checking code Check code Check content 0403 Serial transmission abnormality 0900 Test run ventilation 1102 Discharge temperature abnormality 1111 Low pressure saturation temperature sensor abnormality TH2 1301 Low pressure abnormality OC 1302 High pressure abnormality OC 1500 Overcharged refrigerant abnormality 2500 Leakage water abnormality 2502 Drain pump abnormality 2503 Drain sensor abnormality 2600 Abnormal water leak 4103 Reverse phase abnormality 4106 Detection of electric power failure electric instantaneous power failure 4115 Power supply sync signal abnormality 4116 Fan speed abnormality motor abnormality 4200 VDC sensor circuit abnormality 4220 108 Bus Voltage drop abnormal
181. te of sensor YES and LEV Power supply reapplying BC controller Modify the defective Defects for the places control board 1 As for transformer checks It is subject to the failure judgment method of main parts in 4 5 92 Phenomena Factors HO indication on the 1 The M NET transmission power supply form the outdoor remote controller is not unit is not supplied lit and the ON OFF The original power supply of indoorunit is not turned switch does not work on 2 The connector on the controller board in indoor unit is removed Main board CNS1 INV board CNAC2 CNVCC1 CNL2 3 Power supply circuit defects of the outdoor unit INV board defects Diode stack defects Prevention resistance of rush current R1 damage 2 Short circuit of the M NET transmission line 3 Error wiring of the M NET transmission line on the side of the outdoor unit CD A break of the transmission line or terminal block re moval 2 Indoor Unit transmission line is wired to the transmis sion line terminal block TB7 for the central control by mistake 4 M NET transmission line break on the side of Indoor Unit Short Open In the case of 2 3 and 7 fac 5 Loose or disconnection of wiring between the M NET trans tors indicate 7102 errors by mission terminal block TB 5 of Indoor Unit and Indoor Unit the self diagnosis LED of the controller board CN2M and disconnection of connectors outdoor unit 6
182. ted to inverter output Failure details No 102 current sensor Refer to 1 5 Failure in DCCT over current cut off Failure details No 103 Failure in overcurrent cut off Failure details No 106 107 Failure in IPM short When detecting IPM short circuit 1 Compressor ground fault Refer to VII 5 2 circuit ground fault damage or ground fault at the load 2 Confirmation of compressor ground Failure details No 104 side just before the inverter starts fault and winding wire failure 2 Matters related to inverter Refer to VII 5 2 output 5 Confirmation of inverter circuit trouble Abnormal load short When detecting ground fault at the 1 Compressor ground fault Refer to VII 5 2 circuit load side just before the inverter 2 Confirmation of compressor ground Failure details No 105 starts fault and winding wire failure 2 Output wiring Checking of short circuit 3 Power source Check if power source voltage is 180V or more 4260 Cooling fan failure When heat sink temperature 1 Same as a failure No 4230 Same as a failure No 4230 THHS is 95 C or more for 10 minutes or more after the inverter starts If detecting sensor Short or Open 1 Thermistor failure Checking of the resistance value of ther 5101 S Suction while the thermostat is working 2 Connecter contact failure mistor restart prevention mode for 3 3 Thermistor wiring disconnec 15kQ 30 C 4 3kQ minutes is alive Unless sensor tion o
183. ter performing the same work as a and energizing the solenoid valve SV4 the gauge pressure of pressure gauge shows the same as the charged pressure The SV4 is normal c After performing the same work as a and energizing the solenoid valve SV5 the gauge pressure of pressure gauge shows the same as the charged pressure The SV5 is normal Check oil trap kit E xj First setting N 3 Check 53 574 595 2 3 Check S 3 574 595 Does pressure gauge value equal charged nitrogen gas pressure After opening ball ale charge nitrogen gas through the service port 416 4 SV7 Selector valve This solenoid valve opens when energized Relay ON a After opening the ball valve BV4 charge nitrogen gas and energize the solenoid valve SV7 1 After removing the tamper proof lid open the ball valve BV1 to discharge nitrogen gas The SV7 is normal 2 Discharge nitrogen gas gt When any difference from the above is found repeat the same work In the case that no change is observed check each part or replace the part if necessary Refer to the following items for solenoid valve confirmation Confirmation items for solenoid valve Coil Checking items Judgement method Countermeasure Connection failure in wire 1 Visual check of slipping off of the terminal block for connecter connection of connecter 2 pull out the connecter on the control board side to check Conductivity chec
184. the oil trap kit check the inner pressure Store the kit at a place not exposed to direct solar radiation sun light in a cool and dark place Confirming the operation compressor starting After recovering mineral oil check the cooled heated air supply and compressor operating status by conducting normal air conditioning 51 Conducting reflushing operation to improve mineral oil recovery conducts reflushing operation providing the PC screen below Clicking NG mode initiates reflushing operation REPLACE Main screen montar 52 V Mineral Oil Recovery Operation Data Reference Data 1 Standard data During flushing operation Outdoor unit model name PUHY P200YREM A PUHY P250YREM A Items Indoor Dry bulb temp Outdoor Ambient temp Connected unit 6 7 Indoor unit Operating unit 6 Model name 80 56x4 22 56x6 22 Conditions Main piping Piping Branch piping Total piping length Refrigerant charge Outdoor Current unit Voltage Indoor unit SC LEV1 0 Oil return SLEV 64 LEV opening High pressure after O S Low pressure before MA Pressure 2 35 0 48 Discharge TH1 96 Heat exchanger outlet TH5 56 Outdoor Low press 2 phase temp TH2 3 4 unit SC heat exchanger outlet TH7 54 Bypass o
185. this moment an error 4 Slipping off of pin at the con Checking of slipping off of pins at connecting TH6 5101 or 5106 is displayed on the necting part and contact failure parts screen 3 During 3 minute restart prevention 5 Disconnection Checking of disconnection e mode an indication is displayed on the PC monitor 6 Failure of thermistor output Check the inlet temperature of the sensor by 4 The above Short or Open is not circuit on the main board the LED monitor detected for 10 minutes after the If the difference in temperature between de compressor starts tected and actual is large replace the control 5 Detection of Short Detection of Open TH1 240 C or above 0 57 15 C or below 321 TH6 110 C or above 0 4kQ 40 C or below 130kQ 5110 THHS sensor When detecting THHS Open and Short 1 THHS sensor failure Checking of the short circuit of THHS sensor circuit failure just before the inverter starts or while it is operating 2 Contact failure Replacement of the THHS sensor 3 INV board failure Replacement of the INV board 911 Fan controller When THBOX sensor detects 90 C or 1 Triac overheat Checking of heat exchanger fan lock radiator panel more or Open THBOX 2 Thermistor failure Checking of thermister resistance 3 Engaged lead wire Checking of engaged lead wire 8 4 Damaged covered wire Checking of damaged wire cover E 5 Slipping off of pin and contact
186. tions when replacing the main board for outdoor unit In addition please note that the descriptions are subject to change depending on the timing Timing for replacing the main board Response procedure Before mineral oil recovery operation Set the SW2 9 of main board to ON After the completion of mineral oil recovery operation Set the SW2 9 of main board to OFF 118 X Information on Rating Plate WEIGHT ALLOWABLE PRESSURE Ps MANUFACTURER MISTUBISHI ELECTRIC CORPORATION AIR CONDITIONING amp REFRIGERATION SYSTEMS WORKS 5 66 TEBIRA 6 CHOME WAKAYAMA CITY JAPAN 419
187. to the service check joint the REPLACE MULTI ester oil kit upper part ball valve 1 and lower part ball valve 2 Remove the oil trap kit and 1 After flushing operation close the service valves of the outdoor unit and valve mounted to REPLACE MULTI ester oil kit the extended piping 4 in total 2 Close the service valves of the oil trap kit 4 in total 3 Turn off the power source of the outdoor unit once 4 After flushing operation recover oil by opening the oil recovery service valve Confirm that about 2 litters of oil is recovered mineral oil recovered by flushing operation should be extracted for each time and confirm that the pressure counts within 0 049 0 294MPa to proceed the work Ll Reconnecting piping kit provided 1 Remove the piping Flexible tube between the outdoor unit valve mounted to the extended with outdoor unit and conducting piping and oil trap kit evacuation 2 Remove the oil trap kit 3 Remove the REPLACE MULTI ester oil kit Recover refrigerant inside the REPLACE MULTI ester oil kit 4 After reconnecting the piping kit field work to the outdoor unit conduct evacuation 5 Open the ball valve of the outdoor unit and valve mounted to the extended pipe in the order BEC ee of the extended piping to the outdoor unit 1 and 4 After removing the REPLACE MULTI ester oil kit confirm that ester oil does not flow out from the lower ball valve After removing
188. to this product are shown below Cool heat selection Y System Outdoor unit Total capacity of connected Quantity of connectable Connectable indoor unit model name indoor unit model names indoor unit model name PUHY P200YREM A 100 260 1 set 13 set P20 P250 New refrigerant series indoor unit and ventilation relating equipment PUHY P250YREM A 125 325 1 set 16 set Note The total capacity of connected indoor unit model name represents the summed up total of the numerical figure portion of the indoor unit model names 2 Temperature range allowing mineral oil recovery operation Outdoor inlet dry bulb temperature 5 43 C 3 Items to be observed Refrigerant flow sound operating sound of solenoid valve switching Caution Countermeasure During mineral oil recovery flowing sound may be gen Install the unit at a place not affected by the erated depending on the status of refrigerant In addi sound generated from the unit tion operating sound may be generated at the switching of the solenoid valve These symptoms do not represent abnormal states e RE Effect of noise Caution Countermeasure As the air conditioner uses microcomputer radiation noise The equipment which may likely be affected is emitted from the power source transmission line and by noise receiver of wireless microphone or unit body slightly If the unit is installed near equipment antenna are recommended
189. ty Composition of pressure sensor The pressure sensor is composed of the circuit shown in the right Application of 5V between the wires Red and Black generates an electric pressure corresponding to the pressure between the wires White and Black and the electric pressure is taken in the microcomputer The output voltage is 0 1 per 0 098MPa The main body side of pressure senor is of specifica tions for connecter connection The pin number of connecter is different to the other on the pressure sensor side and on the control board side Pressure 0 2 94 Vout 0 5 3 5V 0 1V 0 098MPa Main body side Main board side Connector 1 pin 3 pin GND Black Vout White Vcc DC5V Red 2 pin 2 pin 3 pin 1 pin 2 Appearance visual check When any defect such as change in color or corrosion is found in the pressure sensor replace it 115 2 Solenoid valve Capillary Pressurize nitrogen gas to check for nitrogen leaks when Check oil trap kit the solenoid valve is acting Perform the work after refrigerant recovery and nitrogen gas discharge Close all the ball valves BV1 4 in the oil trap kit be fore charging nitrogen gas Additionally shift to the next solenoid valve in case of getting an answer of No 3 times in succession when checking each solenoid valve To check solenoid valve capillary recover refrigerant inside OTE and close all ball valves
190. unit for transmission line PAC SC34KUA ae Ec Terminal block for power source RS 232 Terminal block SITIS for transmission 01 LIE TBO2 3 Start up procedure of S W for checking For use at the time of maintenance and checking of other devices than 2 2 3 Strainer 1 Click Start button and point Program 2 Check trap kit PS1 591 597 E X 2 Click Oil trap kit checking to start up S W E for checking 3 After starting up input self address and OTK sv s f SMI address to start maintenance and checking sv E siiis 2 2 Maintenance and checking procedure Proceed work from the top in the order Charge 0 5kg of liquid refrigerant after completing maintenance and checking following the procedure below 1 Pressure sensor PS1 1 Check the pressure comparing the pressure de 1 Check pressure sensor E tected by the pressure Sensor with the gauge Comparing the gauge pressure of meter and the monitor displaying pressure check the pertinent item a In the state of shutdown compare the gauge At gauge pressure 07 0 049 2 At pressure around 0 4 of monitor display pressure with the pressure displayed on the C 3 At pressure above 2 96MPa of monitor display monitor 1 When the gauge pressure is around 0 0 049MPa Inner pressure drop due to gas leak 2 When the pressure displayed on the
191. use existing piping for reuse in accordance with the specified check sheet by refer ring to product catalogs and this manuals for judgement to reuse Confirming the possibility of existing e vapor condensation was found in the past check the thermal insulation power source system for reuse Any portion suffering condensation dripping check the deterioration of the insu lation and repair the insulation materials if required Confirming the objective range for When the copper piping is seriously deteriorated do not use parts with verdigris replacing or black spots For reusing the existing control wiring between the outdoor unit and remote con troller check the wire type size or the like based on the check sheet to judge the possibility Even when the above does not meet the item on the check sheet existing wiring may be reused depending on the number of connecting indoor units and piping length Ask us for details For the power source system employ the voltage and number of phase meeting the outdoor unit indoor unit and adopt the breaker capacity and wiring size based on the power source wiring connection diagram When the existing power source system including the power source wiring is used check the system for deterioration and damages Check the refrigerating machine oil used in the existing system As is found at Recovering the refrigerant of old system the oil inspection if the refrigerating machine oil u
192. ut holding the main body the coil can be subject to bending force lead ing to a bend in the pipe Therefore be sure to re A section gt move the coil firmly holding the main body Fitting procedure for coil Firmly fix the lower part of the main body Section A in the illustration so that the main body may not move and insert the coil from above and run the coil stopper in the dent If you pushing in the coil alone without holding the main body the coil will be subject to bending force leading to a bend in the pipe Therefore be sure to fit the coil firmly holding the main body A section 103 Composition DKV 18D125 As shown in the illustration the outdoor LEV is designed so that the LEV main body may be detachable fro the coil Coil Stopper Unit body Lead wire Dent for stopper 12 dents toward hoop direction Removing procedure for coil Firmly fix the lower part of the main body Section A in the illustration so that the main body may not move and pull the coil upward At this time it is difficult for the coil to be pulled out due to lodging of the stopper pull coil out upward after getting it out of the dent for the stopper on the main body by turning round the coil from side to side If you pull out the coil alone without holding the main body the coil will be subject force leading to a bend of the pipe Therefore be sure to remove the coil firmly holding the main F
193. utlet TH8 38 Sectional temperature Composition detected value OC 53 Service Maintenance Inspection Construction of Oil Trap nennen 55 1 External appearance with panel removed sss eee 55 2 Refrigerant CIRC UNE Pe 56 62110 oo oc 57 Il Electrical Wiring 58 Ill Refrigerant Circuit Diagram 2 2 2422442 59 1 Entire refrigerant circuit diagram at mineral oil recovery 59 2 Refrigerant circuit diagram of oil trap 60 IV Function List of Major Parts entorno 61 910 c RUIN 61 NES Nip 62 ise 63 V Control of Mineral Oil Recovery Operation 64 UB eere 64 2 Control of solenoid retten lin b gente eset tewentanteesaterieuatienes 64 SER drei 65 4 Oil return control Electronic expansion valve lt 9 66 5 Mm om mm 66 6 Sub cooling coil control Electronic expansio
194. vacuum pump and the high low pressure valve of the gauge mani fold recover the refrigerant inside the REPLACE MULTI ester oil kit 6 After recovering refrigerant close the ball valve 1 of the REPLACE MULTI ester oil kit valve 4 before the vacuum pump and the high low pressure valve of the gauge manifold and remove the REPLACE MULTI ester oil kit Confirm that the oil quantity recovered inside the REPLACE MULTI ester oil kit is correct Confirming the operation compressor starting After completing oil replenishing and recovering work check the cooled heated air supply and compressor operating status 49 Replenishment recovery of ester oil under re flushing operation Work flow Work content Carrying in ester oil for REPLACE MULTI and tools Checking the required parts a c _ Installing the oil trap kit branch piping kit and PC E NN n Air tightening and evacuating the inside of piping flexible tube lt 1 Turn on the power source of the outdoor unit 2 Remove the piping kit mounted between the outdoor unit and the valve on the extended piping 3 Connect the outdoor unit and oil trap kit with piping flexible tube 4 Apply airtight test and evacuation to the piping flexible tube between the outdoor unit valve mounted to the extended piping and oil trap kit 5 Open the ball valves in the order of th
195. verter Furthermore a transmit receive signal is superimposed to the control source 3 Oil trap kit 5V for micro computer and DC12V for relay derived from the power source AC200V for outdoor unit are provided by the transformer and supply circuit for stabilization However while the power source AC200V is shutdown 5V for micro computer is provided by the control source DC30V supplied from an outdoor unit by way of the control line 4 MN converter 5V for micro computer is provided by the control source DC30V supplied from an outdoor unit by way of the control line 5 Indoor unit DC5V for micro computer LEV and DC12V for relay are provided by the transformer and supply circuit for stabilization from the power source AC200V for indoor unit However while the power source AC200V is shutdown DC12V for LEV and 5V for micro computer are provided by the control source DC30V supplied from an outdoor unit by way of the control line 6 Remote control DC5V for micro computer is provided by the control source DC30V For MA remote control DC 12V supplied from an outdoor unit For MA remote control an indoor unit by way of the control line Transmit receipt system The transmit receipt during Replace Multi mineral recovery operation is performed by the serial transmis sion with non polar 2 wire system between remote controller indoor unit heat storage tank unit oil trap kit outdoor unit MN converter PC epis Mon
196. zed control terminal block TB7 In the case of P200 250YREM A INV board 2 Connect the transmission line of the oil trap kit to the terminal block for outdoor unit transmission TB3 and the shielded earth line to the earth screw Connect the power source line of the oil trap kit to the terminal block for outdoor unit power source TB1A Refer to the figure above or to individual power source by using a power cord with plug Wire thickness for power supply Transmission cables Main cable Grand 1 5 1 5 1 25 VCTEK CVV CVS VVR VVF or shielded wire CVVS CPEVS Notes 1 Specific wiring requirements should adhere to the local wiring regulations of the region 2 Power supply cords of parts of appliances for heat source use shall not be lighter than polychloroprene sheathed flexible cord design 245 IEC57 3 When the power source is supplied from the outdoor unit as shown in the figure above the protection of the oil trap kit relies on the switch installed on the outdoor unit Therefore be sure to install the switch on the outdoor unit 3 Remove the screws 2 pcs of the terminal block cover of the oil trap kit connect the transmission line to the tran

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