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SERVICE MANUAL - mitsubishitech.co.uk

1. 9 WIRING SPECIFICATIONS 9 1 FIELD ELECTRICAL WIRING power wiring specifications 200 250 Outdoor unit model 200 250 Outdoor unit Phase 3N 3ph 4 wires 50 Hz Power Freguency 8 400 Outdoor unit input capacity 92A Main switch Breaker E Outdoor unit power supply 5x Min 4 Whee x Indoor unit Outdoor unit 2 Cable length 50 m 3 x 4 Polar Cable length 80 m 3 x 6 Polar size mm Indoor unit Outdoor unit earth 1x Min 2 5 Remote controller Indoor unit d 2 x 0 3 Non polar Outdoor unit L1 N L2 N L3 N AC 230 V OEC Indoor unit Outdoor unit 51 52 4 230 V Circuit rating Indoor unit Outdoor unit 52 53 4 DC 24V Remote controller Indoor unit 4 DC 12V 1 A breaker with at least 3 0 mm contact separation in each pole shall be provided Use earth leakage breaker NV 2 Max 80 m Total Max including all indoor indoor connection is 80 m Use one cable for S1 and S2 and another for S3 as shown in the picture 0 09 50 Total for 200 250 400 500 51 SIG S3 Wiring size 3 1 5 Polar 8 The 10 m
2. Display SV1 Four way Compressor warmina p Display 52C SV2 SS 0 0 1 ON 4 2 ON 2 ON 3 ON ON 3 ON ON 4 ON 4 ON 5 ON ON 5 ON ON 6 ON ON 6 ON ON 7 ON ON ON 7 ON ON ON 8 ON 9 ON ON A ON ON b ON ON ON C ON ON d ON ON ON E ON ON ON F ON ON ON ON Error content U9 Request code 55 Data display 0ololsxis Error content Error content Error content D Detected Error content Detected Display Overvoltage Undervoltage Power synchronizing Display Converter Fo PAM error error error open error signal error error 0 0 1 e 1 e 2 e 2 e 3 e e 3 e e 4 e 5 e e 6 e e 7 e e e 8 e 9 e e A e e b e e e C e e d e e e E e F 83 Contact demand capacity Reguest code 61 Data display 0 0 0 Setting content External input state Request code 62 Data display 0 010 x nput state Setting content Setting Display Setting value SW7 SW72 0 096 1 5096 ON 2 7596 ON 3 100 Input state 6 Input present Contact demand Silent mode Spare 1 Spare 2 Display input input 0 1 e 2 e 3 e e 4 e 5 e e 6 e e 7 e e e 8 e 9 e e A e e b e e e C e d
3. LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply gt TB L1 L2 L3 Connection Terminal lt L1 L2 L3 Power supply SWP Switch lt Pump Down gt TB2 Terminal Block lt Indoor Outdoor gt TB P1 Connection Terminal CN31 Connector Emergency Operation MC Motor for Compressor TB P2 Connection Terminal LED1 LED2 LED Operation Inspection Indicators MF1 MF2 Fan Motor TB C1 Connection Terminal F3 F4 Fuse lt T6 3AL250V gt 2154 Solenoid Valve Four Way Valve TB N1 Connection Terminal SS Connector lt Connection for Option 63H High Pressure Switch X52A 52 Relay CNM Connector A Control Service Inspection TH3 Thermistor Outdoor Pipe N F Noise Filter Circuit Board CNMNT Connector TH4 Thermistor lt Discharge gt LIt LI2LISNI Connection Terminal lt L1 L2 L3 NI Power supply Connected to Optional M NET Adapter Board TH6 Thermistor Outdoor 2 Phase Pipe LO1 LO2 LO3 Connection Terminal lt L1 L2 L3 Power supply CNVMNT Connector TH7 Thermistor lt Outdoor gt GD1 GD2 Connection Terminal lt Ground gt lt Connected to Optional M NET Adapter Board gt LEV A Electronic Expansion Valve C B Controller Circuit Board CNDM Connector ACL4 Reactor SW1 Switch lt Forced Defrost Defect History Record lt Connected for Option Contact Input DCL Reactor Reset Refrigerant Address CN3S Connector lt Connection for Option gt CB1 CB2 Main Smoothing Capacitor SW4 Switch lt Test
4. lt lt TT gt gt eoo ow NN a a NN 55 a OLN uonepunoj peuojou pedeus N Z y lul pueH c exelu epis Buidid 1234 Jeay inoxoouy 726 2 A ddns samod 4614 inoxoouy 29 2 ddns samad 11090uy Burdid 1 jou 1uo44 Inoyoouy Buruna 1014 729 2 ddns 0000 1noyoouy SUR EHEYHAOSZd ZHNd a key uM a ZHEVHAOSZd ZHfid LHEVHAOSZd ZHhd 27 UUUU Lov E 2 NAN gt LHEVHAO0Zd ZHhd G IP D 104 ONIZvug SVD 1 Zy JAYA 4015 JO Ly DANA 8 uonoeuuoo edid qinor UOU 10 SPUEH you 2 80 6L 3v 13 uonoeuuoo edid svo ANAN f SOON JO
5. Synchronized twin Synchronized triple Outdoor N Outdoor N unit PUMP unit I kh i i Indoor Indoor 4 i Indoor Indoor Indoor unit unit unit unit unit 1 1 1 7 1 7 1 ITA Im Unit Remote Unit 1 OH Remote 1 0 power A I controller i power 4 GA controller I I Indoor outdoor 1 1 h I unit connection i I Indoor outdoor E cable 6 emn connection cable 1 S ol O Earth leakage breaker h 69 Earth leakage breaker i 3 69 wiring circuit breaker 1 l 1 i wiring circuit breaker or i il isolating switch 63 isolating switch 3 3 63 i 1 4 ro TV Di 4 e ej seil t Oj reine 13 1 1 System Indoor 200 250 Outdoor Indoor unit unit Im ES Unit D po Unit power J Supply 4 Omm Supply mE EN Indoor outdoor 5 ET unit connection il Loo p i i Earth leakage breaker 1 wiring circuit breaker or 3 Remote 1 controller La NG isolating switch 1 2 System Indoor 400 500 i Outdoor unit No 1 Unit power su
6. u uaa gt gt 50 pue aq 15 SJ YSEM pue 5104 ay UMOYS 1ejnorued jo oo 1591 001 5 eq ued Sot uolyepuno ae 559999 90105 10 ejdurexo 5 008 TI E e 104 OLIN uonepunoj Suonoeuuoo pue Ajwuy eui enoes papasu eoeds jo suoisueuirg 9iseq e swous y L uonepuno padeus N Z Sta SNOLLO3HIQ ONIHIM DN Idd 91709 NOLIVONnOd 3OvdS 3OIAH3S 2 30045 3383 NN I I 22 2 200 2 250 Buidid Buidid 10014 PUHZ P200YHA3R1 P250YHA3R1 P200YHA3R2 P250YHA3R2 PUHZ PUHZ PUHZ k V 666 S66 lou Buidid 6EE c uizejg ge s lou oo n p d 10 lpueH jeueg 994195 Bum 100P1NQ 100PU JUBIY 5 97 18 612 c 146 929 092 096 5 sly
7. SS epis epis SXelu Jeoy por P 5 g 3 iubieu uoNepunod gt Ae00 paseyoind spenueui 5 eui mojag pue 1291 jsnui sjeusew pue 5104 eui uMous sjrejep jo WO eq slloq 0 LIN uonepunoj p YIM 859002 JO ejdurexe pue andes aseajd papasu eoeds jo suoisueui SMOYS eu SNOILO3HIO DNIHIM DNIdid v 51108 NOLLVANNOH 39vdS 39IAd3S y 39vdS 3384 11 8 WIRING DIAGRAM PUHZ P200YHA PUHZ P200YHA3R1 PUHZ P250YHA PUHZ P250YHA3R1 PUHZ P200YHA3R3 PUHZ P250YHA3R3 PUHZ P200YHA3 PUHZ P200YHA3R2
8. Thermo on time until error stops 0 999 0 999 When itis 100 minutes or more hundreds digit tens digit and ones digit are displayed by turns Example When 415 minutes 0 5 secs 4 15 4 0 5secs 2 secs Indoor pipe temperature Liquid TH2 3 Indoor 3 39 88 39 88 When the temperature is 0 C or less and temperature are displayed by turns Indoor pipe temperature Cond Eva TH5 3 Indoor 3 39 88 39 88 When the temperature is 0 or less and temperature are displayed by turns When there is no indoor unit 00 is displayed U9 Error status during the Error postponement period Description Detection point Display Normal 00 Overvoltage error Power circuit board 01 Undervoltage error Power circuit board 02 Input current sensor error L phase open error Abnormal power synchronous signal Controller circuit board 04 Power circuit board 08 Display examples for multiple errors Overvoltage 01 Undervoltage 02 03 Undervoltage 02 Power sync signal error 08 0 68 Code display SW2 setting Display detail Explanation for display Controlling status of compressor The following code will be a help to know the operating frequency operating status of unit The tens digit Compressor operating frequency control Primar
9. Display function of inspection for outdoor unit The blinking patterns of both LED1 green and LED2 red indicate the types of abnormality when it occurs Types of abnormality can be indicated in details by connecting an optional part A Control Service Tool PAC SK52ST to connector CNM on outdoor controller board Display 1 Normal condition Outdoor controller board A Control Service Tool LED1 Green LED2 Red Error code Indication of the display Unit condition When the power is turned on Lighted Lighted Alternately blinking display When unit stops Lighted Not lighted 00 etc Operation mode When compressor is warming up Lighted Not lighted 08 etc When unit operates Lighted Lighted C5 H7 etc 2 Abnormal condition Indication Outdoor controller board LED1 Green LED2 Red 1 blinking 2 blinking Connector 63H is open Check if connector 63H on the outdoor controller board is not disconnected GCheck continuity of pressure switch 63H by tester 4 blinking Abnormality of indoor controller Replace indoor controller board board inking Miswiring of indoor outdoor unit conne ifi i ire 1 blinking sing Wira excessive numberof indoor Check if indoor outdoor connecting wire is connected correctly units 4 units or more Check if 4 or more indoor units are connected to outdoor unit Mis wiring of ge unit m GCheck if noise entered into indoor outdoor connecti
10. 9 4 M NET WIRING METHOD Points to note 1 Outside the unit transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication Place them at intervals of more than 5 cm Do not put them in the same conduit tube 2 Terminal block TB7 for transmission wires should never be connected to 220 240 V power supply If it is connected electronic parts on M NET P C board may burn out 3 Use 2 core x 1 25 mm shield wire CVVS CPEVS for the transmission wire Transmission signals may not be sent or received normally if different types of transmission wires are put together in the same multi conductor cable Never do this because this may cause a malfunction 1 0 eee nn Refrigerant Refrigerant mm Refrigerant remote address 00 address 00 address 00 controller M NET M NET M NET Power address 01 supply unit for transmission address 02 address 03 Jed wire Y A control A control A control remote remote remote controller controller controller It would be ok if M NET wire non polar 2 cores is arranged in addition to the wiring for A control 4 Earth only one of any appliances through M NET transmission wire shield wire Communication error may occur due to the influence of electromagnetic noise Ed error will appear on the LED display of outdoor un
11. 61 SW setting Display detail Explanation for display Pipe temperature Liquid TH3 40 90 40 90 When the coil thermistor detects or below and temperature are displayed by turns Example When 10 0 5 secs 0 5secs 10 gt 2 secs Discharge temperature TH4 3 217 3 217 When the discharge thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 105 C 0 5 secs 0 5secs 1 gt 05 gt t J 2 secs Output step of outdoor FAN 0 10 The number of ON OFF times of com pressor 0 9999 0 9999 When the number of times is 100 more hundreds digit tens digit and ones digit are displayed by turns Example When 42500 times 425 x100 times 0 5 secs 0 5secs 4 25 gt 1 2 secs Compressor integrating operation times 0 9999 0 9999 When itis 100 hours more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 x10 hours 0 5 secs 0 5secs 2 45 gt 2 secs Compressor operating current 0 50 0 50 Omit the figures after the decimal fractions Compressor operating frequency
12. CN2 Connect to the outdoor power circuit board CN2 O O Reception from power circuit board Zero cross signal 0 5V DC Not used 9 9 16V DC 16V DC CNAC to Power supply for outdoor controller circuit board 220V 240V AC to Power supply for indoor and outdoor unit connection wire 220 240V AC CNS 51 52 220 240 Communication power supply Outdoor noise filter circuit board PUHZ P200YHA PUHZ P200YHA3R1 PUHZ P250YHA PUHZ P250YHA3R1 PUHZ P200YHA3 PUHZ P200YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA3R3 GD1 Connect to the earth CNAC1 CNAC2 AC220 230 240V Connect to the outdoor controller circuit board GD2 Connect to the earth CNDC Connect to the outdoor controller circuit board CNDO CNL Connect to the ACL4 LI1 LI2 LIS NI POWER SUPPLY LI LI2 LI LIS LI3 LI1 AC380 400 415V input LI1 NI LI2 NI LIS NI AC220 230 240V input Connect to the terminal block TB1 LO1 LO2 Los POWER SUPPLY LO1 LO2 LO2 LOS3 LO3 LO1 AC380 400 415V OUTPUT Connect to the outdoor power circuit board TB L1 L2 L3 55 PUHZ P250YHA3 PUHZ P250YHA3R2 CNCT Primary current Connect to the outdoor power circuit board CN5 Outdoor power circuit board PUHZ P200YHA PUHZ P250YHA PUHZ P200YHA3 PUHZ P250YHA3 PUHZ P200YHA3R1 PUHZ P250YHA3R1 PUHZ P200YHA3
13. unit Outside air temperature TH7 39 88 10 Outdoor unit Heatsink temperature TH8 40 200 11 12 Discharge superheat SHd 0 255 13 Sub cool SC 0 130 14 15 16 frequency 0 255 Hz 17 Compressor Target operating frequency 0 255 Hz 18 Outdoor unit Fan output step 0 10 Step 19 Outdoor unitFan t speed 0 9999 gi Only for air conditioners with DC fan motor 20 Outdoor uni kan B Speed 0 9999 rpm 0 is displayedifthe air conditioneris a single fan Only for air conditioners with DC fan motor type 21 22 LEV A opening 0 500 Pulses 23 LEV B opening 0 500 Pulses 24 25 Primary current 0 50 A 26 DC bus voltage 180 370 V 27 28 29 Number of connected indoor units 0 4 Units 30 Indoor unit Setting temperature 17 30 31 Indoor unit Intake air temperature Measured by thermostat 8 39 32 ndoor unit Intake air temperature Unit No 1 8 39 c O is displayed if the target unit is not present Heat mode 4 deg correction 33 ndoor unit Intake air temperature Unit No 2 8 39 4 Heat mode 4 deg correction 34 ndoor unit Intake air temperature Unit No 3 8 39 t lt Heat mode 4 deg correction gt 35 ndoor unit Intake air temperature Unit No 4 8 39 c lt Heat mode 4 deg correction gt 36 37 Indoor unit Liquid pipe temperature Unit No 1 39 88 Ke o is displayed if the targe
14. 00 06 1 1 00 06 1 1 00 07 00 07 00 08 1 00 08 1 0 00 09 1 0 0 1 00 09 00 110 1 00 1 1 0 00 06 1 1 1 00 Ob 00 0C 0 0 11 t1 00 OC 1 0 1 1 1101111 00 Od 1 1 1 00 1 1 00 1 1 1 1 00 OF 1 1 1 1 00 00 10 1 0 0 1 0 00 11 0 1 0 0 1 0 00 12 0 Switch OFF 1 Switch ON 1 4 1 00 13 SW8 Data display 00 14 11213 1 1 0 1 0 00 15 ojojo 00 00 0 1 1 0 1 0 00 16 11010 00 01 111 11101110 00 17 00 02 00 18 11110 00 03 1 1 00 19 1 1 00 04 1 11 1 lo 00 1 110 1 00 05 111401111 00 1B 0 1 1 00 06 0 0 1 11 1 0 00 1C 1 1 1 00 07 110 1 11 110 00 1D 0 11 113 1 1 0 00 1E 1 1 1 1 1 0 00 1F 0 Switch OFF 1 Switch ON 00 20 Swa SW9 SW10 mata disblay 1 1 00 21 1 2 0 1 1 1 00 22 0 0 00 00 1 1 1 00 23 1 0 00 01 00 24 0 1 00 02 1 0 1 0 0 1 00 25 1 1 00 03 o i 1fofo 41 00 26 1 1 1 1 00 27 00 28 1 1 00 29 1 00 2 111 1 00 28 1 00 2C 11 11 1 14 00 20 1 li 1 1 00 2 1 1 1 1 1
15. Check if miswiring breaking or poor contact is causing this problem Indoor outdoor connecting wire is polarized 3 core type Connect the indoor unit and the outdoor unit by wiring each pair of S1 S2 and S3 on the both side of indoor outdoor terminal blocks Replace the indoor controller board Check if there is miswiring or breaking of wire Replace the indoor power board Symptoms Nothing is displayed on the remote controller Diagnosis LED display of the indoor controller board LED1 g LED2 6 LED3 or Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit which is used to connect the indoor unit and the outdoor unit AC 198V to AC 264V7 NO Check the status Not lighting of the indoor controller gt Board L EDS displa Check looseness disconnection of the indoor outdoor connecting wire Blinking YES Are there looseness or disconnection of the indoor utdoor connecting wire Check the refrigerant address of the outdoor unit SW1 3 to 1 6 Check the LED display of the outdoor unit after turning on the main power again Not displayed Is anything displayed Displayed Is EA or Eb displayed Is E8 displayed Can the unit be restarted
16. Check the voltage between S2 and S3 on the terminal block of the outdoor unit DC 17V to DC 28V 5 41 Breaking or poor contact of the indoor outdoor connecting wire Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Defective outdoor controller circuit board Defective outdoor controller circuit board Defective indoor controller board Influence of electromagnetic noise Defective outdoor power circuit board Defective indoor power board Fix the breaking or poor contact of the indoor outdoor connecting wire Set the refrigerant address to 0 In case of the multiple grouping System recheck the refrigerant address again Replace the outdoor controller circuit board Replace the outdoor controller circuit board Replace the indoor controller board of the indoor unit which does not operate Not abnormal There may be the influence of electromagnetic noise Check the transmission wire and get rid of the causes Replace the outdoor power circuit board Replace the indoor power board Symptoms Nothing is displayed on the remote controller amp Diagnosis flow LED display of the indoor controller board LED1 e LED2 or ey LED3 Inspection method and troubleshooting Check the voltage of the terminal block TB6 of the remote
17. Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Indoor unit Control state Request code 50 Example Request code 004 Discharge temperature 69 C Refrigerant address 00 A Maintenance mode display B Refrigerant address C Data display area D Request code display area Relay output state Data display Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Outdoor unit Control state Request code 51 Data display State 0 0 0 0 Normal 0 0 O 1 Preparingforheatoperation O O 0 2 Defrost Compressor Frequency control state Request code 52 Data display 0 0 Frequency control state D Frequency control state Frequency control state CD Display Current limit control 0 No current limit 1 Primary current limit control is ON 2 Secondary current limit control is ON Display Power cuen Compressor 4 way Solenoid valve supplied to compressor 0 m 1 ON 2 ON 3 ON ON 4 ON 5 ON ON 6 ON ON 7 ON ON ON 8 ON A ON ON Display State 0 Normal 1 Preparing for heat operation 2 3 x 4 Heater is ON 5 An
18. Outdoor outside temperature TH7 39 88 39 88 When the temperature is or less and temperature are displayed by turns Outdoor heatsink temperature TH8 40 200 40 200 When the temperature is or less and temperature are displayed by turns When the thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Discharge superheat SHd 0 255 Cooling TH4 TH6 Heating TH4 TH5 0 255 When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns Subcool SC 0 130 Cooling TH6 TH3 Heating TH5 TH2 0 130 When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns Input current of outdoor unit 0 500 When it is 100 or more hundreds digit tens digit and ones digit are displayed by turns U9 Error status Description Detection point Display Normal 00 Overvoltage error Power circuit board 01 Undervoltage error Power circuit board 02 Input current sensor error Li phase open error Abnormal power synchronous signal Controller circuit board 04 Power circuit board 08 Display examples for multiple errors Overvoltage 01 Undervoltage 02 03 Undervoltage 02 Power sync signal error 08 0 Code display DC bus volta
19. Self check Symptom The outdoor fan cannot turn around Fuse check Check the fuse F5 on outdoor controller board Replace outdoor controller board C B lt Did the fuse blow gt 3 Yes gt C and fan motor MF1 2 No Wiring contact check Contact of fan motor connector CNF1 2 v Is there contact failure Yes gt Power supply check Remove the connector 2 Measure the voltage in the outdoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc DC250 330V TEST POINT Vcc between 5 and 4 of the fan connector Vec DC15V v 4 Is the voltage normal 2 Yes gt Replace the fan motor V Yes OK Check the operation of fan END Replace controller board 4 Replace outdoor controller board b Y OK Check the operation END NG C Replace the fan motor 48 11 7 HOW TO CHECK THE COMPONENTS lt Thermistor feature chart gt Low temperature thermistors Thermistor Outdoor pipe TH3 Thermistor Outdoor 2 phase pipe TH6 Thermistor Outdoor TH7 EC Thermistor RO 15kQ 3 8 B constant 3480 2 8 1 1 Rt 15exp 3480 27341 273 2 15kQ 30C 4 3kQ 10C 9 6 40C 3 0kQ 20C 6 3kQ 25C 5 2 0 20 10 0
20. The temperature range limit is not active Initial setting value The temperature range can be changed on cooling dry mode The temperature range can be changed on heating mode The temperai ure range can be changed on automatic mode Automatic filter elevation panel up down operation mode Not necessary to set this mode Refer to OPERATION MANUAL of Optional Parts Panel for details on operation Fixed air flow direction mode Not necessary to set this mode Refer to OPERATION MANUAL of indoor unit for details on operation The remote controller will be the main controller Initial setting value The remote controller will be the sub controller The clock function can be used Initial setting value The clock function cannot be used Weekly timer can be used Initial setting value Auto off timer can be used Simple timer can be used Timer mode cannot be used The set contact numbers are not displayed in case of error Initial setting value The set contact numbers are displayed in case of error The temperature unit C is used Initial setting value The temperature unit F is used Room air temperature is displayed Initial setting value Room air temperature is not displayed One of Automatic cooling and Automatic heating is displayed under the automatic mode is running Initial setting value Only Automatic is displayed under t
21. 12345678 123456 2 T SC U ea RED e 7 1 WHT t t US 2 SW5 1 to 5 Function Switch 2 CN5 The black square m indicates a switch position 1 RED TB L3 BLK TB L2 WHT i TB L1 RED X52A 1 7 mra t TB2 y i TI 51 H gt TB P2 Ios TB N1 5 DeL 8 INDOOR NR UNIT CB2 2 N F CNAC1 CNCT CNAC2 WHT 1 3 RED 1 2 1 3 RED TB1 ANE L1 RED sl 101 RED POWER WHT T Ti LO2 wur SUPPLY T T 3N BLK T m tos 400V 50Hz 77 L3 BLU T I M NET ADAPTER N 4 T SYMBOL NAME GRNIYLW 69 TB7 Terminal Block M NET connection bite CN5 Connector lt Transmission gt 11 d I Y CND Connector Power Supply HM Gonnector lt M NET communication gt duci la l SW1 Switch lt Status of communication gt so GD PNK BLU SW11 Switch lt Address setting 1st digit x x el SW12 Switch lt Address setting 2nd digit Lh 2 p AC LED1 LED Power Supply DC5V gt LED2 LED Connection to Outdoor Unit LED3 LED lt Transmission Sending gt LED4 LED lt Transmission Receiving gt LED5 LED lt Power Supply DC12V gt PUHZ P250YHA3 PUHZ P250YHA3R2
22. 8 44 8 47 Electrical circuit Indoor unit PEA RP200GA PEA RP250GA Phase Hz 3 50 3 50 Voltage 400 400 Input 1 00 1 18 Current 2 00 2 30 Outdoor unit PUHZ P200YHA PUHZ P200YHA3 PUHZ P200YHA3R1 R2 R3 PUHZ P250YHA PUHZ P250YHA3 PUHZ P250YHA3R1 R2 R3 Phase Hz 3 50 3 50 Voltage V 400 Current A Refrigerant circuit Discharge pressure MPa kgf cm Suction pressure MPa kgf cm Discharge temperature C Condensing temperature Suction temperature Ref pipe length Indoor side Intake air temperature Discharge air temperature Outdoor side Intake air temperature 38 3 SHF BF The unit of pressure has been changed to MPa based on international SI system The conversion factor is 1 MPa z10 2 kgf cm OUTLINES AND DIMENSIONS 7 mm 2 ced s 26 lou inoyoouy att n0490Uy ajoy Buidid 26 SS ejou Buidid 1 014 E a x 26 8 inoxoouy ejou Duidid wonog N inoyoouy lo ejou Bunun moso OF lddns 18mod inoxoouy Budd inoyoouy 29 2 LL Bumuna 01032005
23. Press TEST button twice The TEST RUN appears on the screen Press N SWITCH Cooling mode Check if cool air blows and water is drained button Heating mode Check if warm air blows It takes a little while until warm air blows 4 Press O AIR DIRECTION Jbutton Check for correct motion of auto vanes correct running TEST button Check the outdoor unit fan for The outdoor unit features automatic capacity control to provide optimum fan speeds Therefore the fan keeps running at a low speed to meet the current outside air condition unless it exceeds its available maximum power Then in actuality the fan may stop or run in the reverse direction depending on the outside air but this does not mean malfunction Press the button to reset the test run in progress Pipe liquid temperature 7 Register the contact number n case of test run the OFF timer will be activated and the test run will automatically stop after 2 hours The room temperature display section shows the pipe temperature of indoor units during the test run Check that all the indoor units are running properly in case of simultaneous twin and triple operation Malfunctions may not be displayed regardless of incorrect wiring 1 After turning on
24. To set all the indoor units collectively select AL O Confirm the refrigerant address and unit number When the refrigerant address and unit number are confirmed by pressing the ae MODE button to confirm the refrigerant address and unit MODE button the corresponding indoor unit will start fan operation This After a while will start to flash in the mode number display area helps you findthe location ofthe indoor unit for which you wantto perform function Selection However if 00 or AL is selected as the unit number all the indoor units corresponding to the specified refrigerant address will start fan operation Mode number display section Example When the refrigerant address is set to 00 and the unit number is 02 00 refrigerant address Outdoor unit 88 will flash in the room temperature display area if the selected refrigerant address does not exist in the system Indoor unit No 01 No 02 No 03 Furthermore if F appears and flashes in the unit number display area and the s 7 N refrigerant address display area also flashes there are no units that corre spondtothe selectedunit number Inthis case the refrigerant address and unit Cf oos EE mode number may be incorrect so repeat steps and to set the correct ones When grouping different refrigerant systems if an indoor unit other than the on
25. lt 10 hours temperature temperature C Number of ON OFE Discharge Heat exchanger times x10 times temperature C temperature Operating Outside air Filter operating 9 current A temperature C 9 time Hours The filter operating time is the time that has elapsed since the filter was reset 14 1 MAINTENANCE MODE OPERATION METHOD If you are going to use 14 2 GUIDE FOR OPERATION CONDITION set the airflow to High before activating maintenance mode Switching to maintenance mode Maintenance mode can be activated either when the air conditioner is operated or stopped It cannot be activated during test run Maintenance information can be viewed even if the air conditioner is stopped Remote controller button information aa MITSUBISHI ELECTRIC Come on I HOURS 239 Ji TEMP cu Operation mode Compressor information Outdoor unit information Indoor unit information 0 38 OMENU hall D FILTER 8 TEST cu 9 PAR 21MAA CLEAR Activate cancel maintenance mode 1 Press the TEST button for 3 seconds to switch to maintenance mode Display amp 9 MAINTENANCE If stable operation is unnecessary or if you want to check the data with the air conditioner stopped skip to step 4 Fixed Hz operation The operat
26. 00 2F 0lolololili1i 00 30 1 1 00 31 1 1 00 32 li 1 1 00 33 1 00 34 1 00 35 00 36 11111 00 37 1 1 1 00 38 1 1 1 00 39 1 00 1 1 0 1 1 1 00 3B 1 li 00 3C 1 0 1 1 1 li 00 3D 1 1 1 00 3E 1 1 1 1 1 00 3F 85 Indoor unit Model setting information Request code 162 Data display 0 0 elle See the table on the right Indoor unit Capacity setting information Request code 163 Data display EIS See the table on the right Display Model setting state Display Model setting state 00 PSA RP GA PSH PGAH 20 01 21 PKA RP FAL 2 PKH P FALH 02 PEAD RP EA 2 GA PEHD P EAH 22 PONRPGAQ PORPGAH PLA RP BA PLA RP74 100 125842 03 SEZ KA VA 23 04 24 05 SLZ KA VA L 25 06 PCA RP HA 26 PCA RP KA 07 27 08 28 09 PEA RP400 500GA 29 0A 2A Ob PEA RP200 250GA 2b PKA RP GAL PKH P GALH OG 2C Od 2d OE 2E OF 2F PLA RP AA 10 30 11 PEA RP EA 31 PLH P AAH 12 MEXZ GA VA L 32 13 33 PKA RP HAL KAL 14 34 PEAD RP JA L 15 35 16 36 PLA RP AA2 17 37 PLA R
27. 9 Outdoor unit is not a inverter models Model name of remote control ler is PAR S25A Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again Replace outdoor unit with inverter type out door unit Replace remote controller with MA remote controller Serial communication error 1 Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective 2 Abnormal if communication between outdoor controller circuit board and M NET board is not available O Breaking of wire or contact failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board Breaking of wire or contact failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board 9 Defective communication circuit of outdoor power circuit board Defective communication circuit of outdoor controller circuit board for outdoor power circuit board O Breaking of wire or contact failure of connector between outdoor controller circuit board and M NET board Contact failure of M NET board power supply line Noise has entered into M NET transmission wire 33 Check connection of each connector CN2 and 4 between the outdoor controller circuit board and the outdoor power circuit board Replace ou
28. Defective transmitting receiving circuit of outdoor unit or indoor unit If displayed address or attribute is indoor unit remote controller detects abnormal ity when remote controller transmits sig nal to indoor unit and there was no reply ACK O During group operation with indoor unit of multirefrigerant system if remote controller transmits signal to indoor unit while outdoor unit power sup ply of one refrigerant system is turned off or within 2 min utes of restart abnormality is detected Contact failure of transmission wire of remote controller or indoor unit 9 Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller 35 Always try the followings when the error A7 occurs Turn off the power supply of outdoor unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If mal function was accidental the unit returns to normal Check address switch of abnormality gener ated address Check disconnection or looseness of abnor mality generated or abnormality detected transmission wire terminal block and con nector Check if tolerance range of transmission wire is not exceeded Check if type of transmission wire is correct or not If there were some trouble of O above repair the defect then turn off the power sup ply of outdoor
29. Functions available when setting the unit number to 00 Select 00 referring to set the indoor unit number 6 Initial setting When sent from the factory Bemarks Function Settings Mode No Setting No Power failure OFF automatic recovery JON 01 Indoor temperature Average data from each indoor unit detecting 1 Data from the indoor unit with remote controller 02 Data from main remote controller LOSSNAY Not supported connectivity Supported Indoor unit does not intake outdoor air through LOSSNAY 03 Supported Indoor unit intakes outdoor air through LOSSNAY Power supply 240V voltage 220V 230V Auto operating Auto energy saving operation ON mode Auto energy saving operation OFF Frost prevention 2 C Normal temperature Humidifier control When the compressor operates the humidifier also operates When the fan operates the humidifier also operates Change of Standard defrosting control _ For high humidit e The setting is applied to the units in the same refrigerant system 04 05 15 16 17 T9 no no P O LAS 05 PN Po The functions below are available only when the wired remote controller is used The functions are not available for floor standing models Meaning of Function setting Mode02 indoor temperature detecting o Indoor temperature ta REM
30. If filters are clogged the airflow amount will be reduced and the unit capacity will be lowered See the instruction manual that came with the product for how to clean the filters Check there is enough space around the air conditioner If there are any obstacles in the air intake or air outlet of indoor outdoor units they block the airflow direction so that the unit capacity will be lowered Sound comes out from the air conditioner D A gas escaping sound is heard sometimes O This is not a malfunction This is the sound which is heard when the flow of refrigerant in the air conditioner is switched A cracking sound is heard sometimes This is not a malfunction This is the sound which is heard when internal parts of units expand or contract when the temperature changes A buzzing sound is heard sometimes This is not a malfunction This is the sound which is heard when the outdoor unit starts operating A ticking sound is heard from the outdoor unit sometimes This is not a malfunction This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition A sound similar to water flowing is heard from the unit O This is not a malfunction This is the sound which is heard when the refrigerant is flowing inside the indoor unit Something is wrong with the O The fan speed does not
31. Refer to 11 9 Replace outdoor controller circuit board Overheat protection Abnormal if outdoor pipe thermistor TH3 detects 70C or more during compressor operation O Defective outdoor fan fan motor or short cycle of outdoor unit during cooling operation Defective outdoor pipe ther mistor TH3 Defective outdoor controller board Check outdoor unit air passage the power off and on again to check the error code If U4 is displayed follow the U4 processing direction Compressor overcurrent interruption When compressor locked Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating O Stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor 9 Defective outdoor power board Dip switch setting difference of outdoor controller circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 11 9 Outdoor power circuit board Check compressor Refer to 11 6 Replace outdoor power circuit board Check the dip switch setting of outdoor con troller circuit board Compressor current sensor error or input current error Abnormal if compressor current sensor detects 1 0A to 1 0A within 3 minutes after compressor starts operating This error is ignored
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33. operation lock To switch the setting press the OON OFF button D All operation buttons except D ON OFF button are locked 2 All operation buttons are locked OFF Initial setting value Operation lock setting is not made To make the operation lock setting valid on the normal screen it is necessary to press buttons Press and hold down the FILTER and ON OFF buttons at the same time for 2 seconds on the normal screen after the above setting is made 2 Use of automatic mode setting When the remote controller is connected to the unit that has auto matic operation mode the following settings can be made To switch the setting press the OON OFF button O ON Initial setting value The automatic mode is displayed when the operation mode is selected The automatic mode is not displayed when the operation mode is selected OFF 3 Temperature range limit setting After this setting is made the temperature can be changed within the set range To switch the setting press the ON OFF button LIMIT TEMP COOL The temperature range can be changed on cooling dry mode LIMIT TEMP HEAT MODE The temperature range can be changed on heating mode LIMIT TEMP AUTO MODE The temperature range can be changed on automatic mode OFF initial setting The temperature range limit is not active When the setting other than OFF is made the tempera
34. system if indoor unit transmit signal to remote controller while outdoor unit power sup ply of one refrigerant system is put off or within 2 minutes of restart abnormality is detect ed Contact failure of transmission wire of remote controller or indoor unit G Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller If displayed address or attribute is FRESH MASTER indoor unit detects abnormality when indoor unit transmits signal to FRESH MASTER and there was no reply ACK O During sequential operation of indoor unit and FRESH MASTER of other refrigerant System if indoor unit transmits signal to FRESH MASTER while outdoor unit power sup ply of same refrigerant sys tem with FRESH MASTER is put off or within 2 minutes of restart abnormality is detect ed Contact failure of transmission wire of indoor unit or FRESH MASTER Disconnection of transmission connector CN2M of indoor unit or FRESH MASTER Defective transmitting receiving circuit of indoor unit or FRESH MASTER 6 If displayed address or attribute is LOSSNAY indoor unit detects abnormal ity when indoor unit transmits signal to LOSSNAY and there was no reply O If the power supply of LOSSNAY is off indoor unit detects abnormality when it transmits signal to LOSSNAY During sequential operation of indoor unit and LOSSNAY of othe
35. x Charge valve Prevent gas from blowing out when detaching charge hose Tool exclusive for R410A x Vacuum pump Vacuum drying and air purge Tools for other refrigerants can be used if equipped with adop ter for reverse flow check A Usable if equipped with adopter for rever se flow A Usable if equipped with adopter for rever se flow Flare tool Flaring work of piping Tools for other refrigerants can be used by adjusting flaring dimension A Usable by adjusting flaring dimension A Usable by adjusting flaring dimension Bender Bend the pipes Tools for other refrigerants can be used Pipe cutter Cut the pipes Tools for other refrigerants can be used Welder and nitrogen gas cylinder Weld the pipes Tools for other refrigerants can be used Refrigerant charging scale Vacuum gauge or thermis tor vacuum gauge and vacuum valve Charge refrigerant Check the degree of vacuum Vacuum valve prevents back flow of oil and refri gerant to thermistor vacuum gauge Tools for other refrigerants can be used Tools for other refrigerants can be used Charging cylinder Refrigerant charge Tool exclusive for R410A X Prepare a new tool Use the new tool as the tool exclusive for R410A A Tools for other refrigerants can be used under certain conditions Tools for other refrigerants can be used
36. 0 999 Minutes 131 132 Indoor Liquid pipe temperature at time of error 39 88 Average value of all indoor units is displayed if the air condi tioner consists of two or more indoor units twin triple quad 133 Indoor Cond Eva pipe temperature at time of error 39 88 Average value of all indoor units is displayed if the air condi tioner consists of two or more indoor units twin triple quad Indoor at time of error 134 ih 39 88 Intake airtemperature Thermostat judge temperature 135 136 137 138 139 140 146 147 148 149 150 Indoor Actual intake air temperature 39 88 151 Indoor Liquid pipe temperature 39 88 152 Indoor condenser evaporator pipe temperature 39 88 80 o o iE Description b Request content Unit Remarks 5 Display range 8 ra 153 Indoor Fan operating time 154 d 0 9999 1 hour After filter is reset Total ing ti 155 ndoor Total operating time 0 9999 XO BUE Fan motor ON time 156 157 Indoor fan output value Sj value 0 255 Fan control data For indoor fan phase control Indoor fan output value 158 p 00 indicates fan control data For indoor fan pulsation control Pulsation ON OFF 159 Indoor fan output value duty
37. 0 225 0 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125Hz 0 5 secs 0 5secs 1 25 gt 2 secs LEV A opening pulse 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 150 pulse 0 5 secs 0 5secs 1 50 2 secs Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Operation mode on error occurring Operation mode of when operation stops due to error is displayed by setting SW2 like below SW2 ON 62 Code display SW2 setting Display detail Explanation for display Pipe temperature Liquid TH3 on error occurring 40 90 40 90 When the coil thermistor detects or below and temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs 15 gt 00 Compressor temperature TH4 or discharge temperature on error occurring 3 217 3 217 When the temperature is 100 C or more the hundreds digit tens digit and ones digit are displayed by t
38. 5 4 FEATURES gt PUHZ P200YHA __ PUHZ P250YHA EE PUHZ P200YHA3 a PUHZ P250YHA3 UNE 2 CHARGELESS SYSTEM PUHZ P200YHA3R1 PUHZ P250YHA3R1 PUHZ P200YHA3R2 PUHZ P250YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA3R3 PRE CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT Max 30m The refrigerant circuit with LEV Linear Expansion Valve and Accumulator always control the optimal refrigerant level regard less of the length 30 m max and 5 m min of piping The additional refrigerant charging work during installation often causes problems It is completely eliminated by chargeless system This unique system improves the quality and reliability of the work done It also helps to speed up the installation time 5 SPECIFICATIONS Service Ref PUHZ P200YHA PUHZ P200YHA3 PUHZ P200YHA3R1 PUHZ P200YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA PUHZ P250YHA3 PUHZ P250YHA3R1 PUHZ P250YHA3R2 PUHZ P250YHA3R3 Mode Cooling Heating Cooling Heating Power supply phase cycle voltage 3 phase 50 2 400V Running current 9 47 9 88 11 0 12 0 Max
39. 50Pa No filter sign indicator 70Pa External static pressure External static pressure 35 50 70 100 150Pa 35 50 70 100 150Pa Refe 100Pa 3 1 1 2 2 150Pa Set temperature in heating mode 4 deg up Fan speed during the heating thermo OFF Available N Not available Extra low Stop Set fan speed Fan speed during the cooling thermo OFF Set fan speed Stop Detection of abnormality of the pipe temperature P8 Available Not available N IN oO N 2 3 2 12 1 1 Selecting functions using the wired remote controller First try to familiarize yourself with the flow of the function selection procedure In this section an example of setting the room temperature detection position is given For actual operations refer to steps to 0 Setting number Refrigerant address Unit number MITSUBISHI ELECTRIC 88 86 E ON OFF 116 00385 OMENU OON OFF C e Back NRG Dave SEES Na NG Modes 01 to 14 can be activated Gv CAD AC OC 2 Oo by pressing buttons amp and dicus n simultaneously and modes 15 to 28 by pressing buttons and Q Selecting functions using the wired remote controller D Check the function selection setting Switc
40. 55 Error content U9 Refer to 13 2 1 Detail Contentsin Request Code _ 56 Sy 58 59 60 Signal transmission demand capacity 0 255 96 61 Contact demand capacity Refer to 13 2 1 Detail Contents in Request Code 62 External input state silent mode etc Refer to 13 2 1 Detail Contents in Request Code 63 64 65 66 67 68 69 70 Outdoor unit Capacity setting display Refer to 13 2 1 Detail Contents in Request Code _ 71 Outdoor unit Setting information Refer to 13 2 1 Detail Contentsin Request Code _ 72 73 Outdoor unit SW1 setting information Refer to 13 2 1 Detail Contents in Request Code _ 74 Outdoor unit SW2 setting information Refer to 13 2 1 Detail Contentsin Request Code _ 75 76 Outdoor unit SW4 setting information Refer to 13 2 1 Detail Contents in Request Code 77 Outdoor unit SW5 setting information Refer to 13 2 1 Detail Contents in Request Code 78 Outdoor unit SW6 setting information Refer to 13 2 1 Detail Contents in Request Code 79 Outdoor unit SW7 setting information Refer to 13 2 1 Detail Contents in Request Code _ 80 Outdoor unit SW8 setting information Refer to 13 2 1 Detail Contents in Request Code _ 81 Outdoor unit SW9 setting information Refer to 13 2 1 Detail Contents in Request Code _ 82 Outdoor unit SW10 setting information Refer to 13 2 1 Detail Contents in Request Code _ 83 84 adapter connection presence absence ane NE 85 86 87 88 89 Display of execution
41. After installation of indoor and outdoor units piping work and electric wiring work re check that there is no refrigerant leak age loosened connections and incorrect polarity Measure impedance between the ground and the power supply terminal block L N on the outdoor unit by 500V Megger and check that it is 1 0MQ or over Do not use 500V Megger to indoor outdoor connecting wire terminal block 51 S2 S3 and remote controller terminal block 1 2 This may cause malfunction Make sure that test run switch SW4 is set to OFF before turning on power supply Turn on power supply 12 hours before test run in order to protect compressor For specific models which requires higher ceiling settings or auto recovery feature from power failure make proper changes of settings referring to the description of Selection of Functions through Remote Controller Make sure to read operation manual before test run Especially items to secure safety 20 TEST RUN and the currently selected operation mode are displayed alternately Displays the remaining test run time Operating procedures Turn on the main power supply While the room temperature display on the remote controller is PLEASE WAIT the remote controller is disabled Wait until PLEASE WAIT disappears before using remote controller PLEASE WAIT appears for about 2 minutes after power supply is turned on 1
42. Display when the air conditioner is not running Hold down the button and press the button for 2 seconds ntroller function selection mode English ELECTIOH German Spanish Russian Italian Chinese French Japanese OFF SET Tu UTRO GT GLE FEE TION MAI PLAN OHTROLLE SUE 3 0N or WE eer EHTER 76 Hold down the button and press the O button for 2 seconds Press the operation mode button 0 Press theTIMER MENU button O Press theTIMER ON OFF button Dot display A MITSUBISHI ELECTRIC CHAHGE _ LANGUAGE gt 90 D a OO amp E ye 7 Operation lock setting is not used Initial setting value All operation buttons except On Off button are locked All operation buttons are locked The automatic mode is displayed when the operation mode is selected Initial setting value The automatic mode is not displayed when the operation mode is selected
43. E E e E 3 s 5 II Hm Era kh NE 5 ac 2 Cer Es o l es oor 5 9 o e o og SIUE US uu t s ee ef 1 3 l boa CE E gt lt UM l 8 ism ge Nn SE amt gt E E end een 5 E olive a s 2 fu d EN as 5 0219 1 T 0 e Po 8 E e E t 8 o I ev 2 BS o M y Se 7 L c o 5 dene o 9 9 5 CAUTION 5 por o LL D o o o o i LETT PC74 PC72 PCT AT 0 anf DIP erat BR e CESJI EI TA Hz Joe a eee AOSZ VE 5 n H CNF1 CNF2 Connect to the fan motor 250 330V DC 6 9 15V DC 0 6 5V DC 15V DC When stopped 7 5V DC When operated 0V 15V pulse 0 d 074 o ido DE SD CNDC Connect to the outdoor noise filter circuit board CNDC D71 Voltage 24V DC 54 CN51 External signal output Compressor operating signal Abnormal signal CNDM D to Input of low level sound priority mode to 9 Input of external con tact point CN4 Transmission to out door power circuit board CN4 2154 Four way
44. Evaporator temperature TH5 room temperature TH1 M NET communication error Error Code Abnormal point and detection method Q Slight temperature difference between indoor room temperature and pipe liquid or condenser evaporator gt temperature thermistor Shortage of refrigerant Disconnected holder of pipe liquid or condenser evaporator thermistor Defective refrigerant circuit amp Converse connection of extension pipe on plural units connection G Converse wiring of indoor outdoor unit connecting wire on plural units connection Defective detection of indoor room temperature and pipe lt condenser evaporator gt temperature thermistor Stop valve is not opened completely Note Indoor unit in the text Case O G Check pipe liquid condenser evapora tor gt temperature with room temperature display on remote controller and outdoor controller circuit board Pipe lt liquid or condenser evaporator gt temperature display is indicated by set ting SW2 of outdoor controller circuit board as follows Conduct temperature check with outdoor controller circuit board after connecting A Control Service Tool PAC SK52ST Temperature display of indoor liquid pipe Temperature display of indoor condenser Indoor 1 evaporator pipe Indoor 1 1 2 3 Temperature display of indoor condenser evaporator pipe Indoor 2 1 2 3 Temperature display of indoor liquid pipe Ind
45. OPERATION DATA BY THE REMOTE CONTROLLER 77 14 EASY MAINTENANCE 87 E 15 DISASSEMBLY 90 PARTS CATALOG OCB424 SUN 1 TECHNICAL CHANGES PUHZ P200YHA3R2 gt PUHZ P200YHA3R3 PUHZ P250YHA3R2 gt PUHZ P250YHA3R3 lt The mounting location of CHARGE PLUG has been changed THERMISTOR has been changed Discharge black Shell white These are compatible The part numbers have been modified The parts that are new numbers are compatible with old numbers lt For all models gt FRONT PANEL TOP PANEL FUSE F3 4 lt For 200Y models gt ACCUMULATOR PUHZ P200YHA3R1 gt PUHZ P200YHA3R2 PUHZ P250YHA3R1 gt PUHZ P250YHA3R2 POWER BOARD has been changed lt CONTROLLER BOARD C B has been changed S W version up PUHZ P200YHA3 gt PUHZ P200YHA3R1 PUHZ P250YHA3 gt PUHZ P250YHA3R1 FAN GRILLES and FRONT PANEL have been changed PUHZ P200YHA gt PUHZ P200YHA3 PUHZ P250YHA gt 2 250 OUTDOOR CONTROLLER BOARD has been changed S W has been changed Corresponding to the additional combination between PKA RP HAL KAL PCA RP KA and PEAD RP JA L 2 REFERENCE MANUAL INDOOR UNIT S SERVICE MANUAL Model name Service Ref Service Manual No PLA RP35 50 60 71 100 125 140BA PLA RP71 100 125 140BA2 PLA RP35 50 60 71 100 125 140BA
46. Operation gt CN51 Connector Connection for Option RS Rush Current Protect Resistor SW5 Switch lt Function Switch gt X51 X52 Relay FUSE1 FUSE2 Fuse lt T15AL250V gt SW6 Switch lt Model Select gt CY1 CY2 Capacitor SW7 Switch Function Setup PB Power Circuit Board SW8 Switch lt Function Setup gt SC U V W Connection Terminal lt U V W Phase gt SW9 Switch When M NET adapter is connected 63H LEVA TH7TH6 TH3 EJ 1 118 5554 5666 5 606666 555 68666 mm 1 6 131 5 2 3 5 e TH3 LEVA cNVMNT SER 2 M NETADAPTER RED WHT WHT WHT WAN e Bl eS a2zc ro 106 999 CNF2 e us LUH 555555585555 S 8 WD 98 eB 3 M 1 14 CN31 594 eg 29082 CNM 1 3 3 WHT 63H YLW CN4 gE 3 CN2 wen Bz ole TRANS WHT 7 9 5 4 99999 dr bo 2L 2 zolo PNK 7 7 BE Win 5 ok x1 MODEL SELECT wiih 1 2 MODEL SW6 SW5 6 2 po F4 3 1 2154 3 M ss fo 200 on D ON ani iom 0 200vHa3 ope BE or 200YHA3R1 12345678 123456 z E 250YHA on Mmmm ON E 250YHA3 OFF m OFF H H m S 250YHA3R1 12345678 123456 z P B BIS 20008808 xd a MEN 200YHA3R3 12345678 123456 Bunn 9 E N N SC W 4 BK MC 250YHA3R2 orr BILL E OFF EB I 60 WHT 250
47. can be selected with the wireless remote controller Function selection using wireless remote controller is available only refriger ant system with wireless function Refrigerant address cannot be specified by the wireless remote controller Flow of function selection procedure The flow of the function selection procedure is shown below This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation Case The procedure is given after the flow chart pep nn Check the function selection setting Switch to function selection mode Troubleshooting mode is the mode entered when Enter address 50 in troubleshooting you press the CHECK button twice to display mode then press the HOUR button CHECK ON OFF TEMP F Specify unit No 01 since the function applies to unit 01 PUR en 9 A Set address 01 while still in troubleshooting mode then press the MINUTE button jm KEPET Note You cannot specify the refrigerant address fang FAN AUTO STOP r unit No O0 Select mode 24 function that raises set temperature by 4 degrees during HEAT operation NO AUTOSTART Set address 24 while still in troubleshooting mode then press the HOUR button l h O Select setting No 02 OFF Check button i HOUR button Set address 02 while stil
48. circuit board TH8 open short Name Open detection Check connection of connector TH3 TH7 6 on the outdoor controller circuit board Check breaking of the lead wire for thermistor TH3 TH6 TH7 Refer to 11 9 Check resistance value of thermistor TH3 TH6 TH7 or check temperature by microprocessor Thermistor TH3 TH6 TH7 Refer to 11 6 SW2 on A Control Service Tool Refer to 11 10 Replace outdoor controller circuit board Replace outdoor power circuit board operation is available in case of abnormalities of TH8 TH6 and TH7 Refer to 11 8 Short detection Thermistor Outdoor pipe 40 C or below 90 or above Thermistor Outdoor 2 phase pipe 40 C or below 90 or above Thermistor Outdoor 40 C or below 90 or above Thermistor lt Heatsink gt 85CC or below 170 C or above Temperature of heatsink Abnormal if heatsink thermistor TH8 detects temperature 95 C Heatsink thermistor is in the power mod ule O The outdoor fan motor is locked Failure of outdoor fan motor Air flow path is clogged Rise of ambient temperature Defective thermistor amp Defective input circuit of outdoor power circuit board Failure of outdoor fan drive circuit OG Check outdoor fan Check air flow path for cooling Check if there is something which causes temperature rise around outdoor uni
49. code is displayed After startup is displayed green once and red twice blink alternately F3 F5 F9 Outdoor unit s protection device connector is open No display appears even when remote After startup is displayed green twice and red once blink alternately EA Eb Incorrect wiring between the indoor and outdoor unit Polarity is wrong for S1 S2 S3 Remote controller transmission wire short controller operation switch is turned on Operation lamp does not light up After startup is displayed only green lights up lt 00 gt There is no outdoor unit of address 0 Address is other than 0 Remote controller transmission wire open Display appears but soon disappears even when remote controller is operated After startup is displayed only green lights up lt 00 gt After canceling function selection operation is not possible for about 30 seconds Normal Press the remote controller s CHECK button twice to perform self diagnosis See the table below for the contents of LCD display Contents of trouble Contents of trouble P1 Abnormality of room temperature thermistor U1 UP Malfunction outdoor unit P2 Abnormality of pipe temperature thermistor Liquid F3 F9 Malfunction outdoor unit P4 Abnormality of drain sensor Float switch connector open E0 E5 Remote controller transmitting error P5 Drain overfl
50. controller YES DC 10V to DC 16V Check the status Lighting of the LED2 Blinking Check the status of the LED2 after disconnecting the remote controller wire from the terminal block TB5 of the indoor unit Check the status Lighting of the LED2 Blinking Defective remote controller Breaking or poor contact of the remote controller wire The remote controller wire short circuits Defective indoor controller board Replace the remote controller Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If itis not between DC 10V and DC16V the indoor controller board must be defective Check if the remote controller wire is short circuited Replace the indoor controller board lt Before repair Frequent calling from customers Phone Calls From Customers How to Respond Unit does not operate at all O The operating display of remote controller does not come on Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied Unit cannot be restarted for a while after it s stopped Wait around minutes to restart unit The air conditioner is in a state of being protected by the microprocessor s directive Once the compressor is stopped the unit cannot
51. f2 UK PLA RP35 50 60 71BA1 UK PLA RP71 100 125BA2 UK PLA RP140BA2R1 UK OCH412 OCB412 PLA RP100BA3 PLA RP100BA3 OCH459 OCB459 PCA RP50 60 7 1 100 125 140GA PCA RP50GA2 50 60 71 100 125 1400 1 PCA RP50GA2 1 06328 PCA RP71 125HA PCA RP71 125HA 1 OC329 PKA RP35 50GAL PKA RP35 50GAL 1 OC330 PKA RP60 71 100FAL PKA RP50FAL2 PKA RP60 71 100FAL H1 PKA RP50FAL2 tH OC331 PEAD RP50 60 71 125 140EA PEAD RP35 100EA2 PEAD RP50 60 71 125 140EA 1H UK PEAD RP35 100EA2 1 UK HWE0521 PEAD RP60 71 100GA PEAD RP60 71 100GA 1 UK HWE0506 PEA RP200 250 400 500GA PEA RP200 250 400 500GA TH AF PEA RP200 250GA TH AFMF HWEO0708A PKA RP60 71 100KAL PKA RP60 71 100KAL TH 452 452 PCA RP50 60 71 100 125 140KA PCA RP50 60 71 100 125 140KA OCH454 OCB454 PKA RP35 50HAL PKA RP35 50HAL OCH453 OCB453 PEAD RP35 50 60 7 1 100 125 1 40JA L PEAD RP35 50 60 71 100 125 140JA L R1 UK HWE08130 BWE08240 BWE09220 3 SAFETY PRECAUTION 3 1 ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal all supply circuits must be disconnected Preparation for the repair service Prepare the proper tools Prepare the proper protectors Provide adequate ventilation After stopping the operation of the air conditioner turn off the power supply breaker Dis
52. finish start up process within 4 minutes after power on O Contact failure of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire 28 Check disconnection or looseness or polar ity of indoor outdoor unit connecting wire of indoor and outdoor units Check diameter and length of indoor outdoor unit connecting wire Total wiring length 80m Including wiring connecting each indoor unit and between indoor and outdoor unit Also check if the connection order of flat cable is S1 S2 S3 Check the number of indoor units that are connected to one outdoor unit If EA is detected 5 Turn the power off once and on again to check Replace outdoor controller circuit board indoor controller board or indoor power board if abnormality occurs again Check if refrigerant addresses SW1 3 to SW1 6 on outdoor controller circuit board are overlapping in case of group control system Check transmission path and remove the cause x The descriptions above M are for EA Eb and EC lt Abnormalities detected while unit is operating gt Error Code Abnormal point and detection method Case Judgment and action High pressure High pressure switch 63H oper
53. holder 6 Removing the thermistor Outdoor pipe TH3 and ther Photo 6 mistor Discharge 4 1 Remove the service panel See Figure 1 2 Disconnect the connectors TH3 white and TH4 white Thermistor Outdoor pipe TH3 on the controller circuit board in the electrical parts box y 3 Loosen the clamp for the lead wire in the rear of the elec trical parts box 4 Remove the soundproof cover upper for compressor 5 Pull out the thermistor lt Discharge gt TH4 from the ther mo holder of the compressor shell 6 Pull out the thermistor lt Outdoor pipe gt TH3 from the sensor holder Soundproof cover upper for compressor Compressor MO 91 OPERATING PROCEDURE PHOTOS 7 Removing the 4 way valve coil 2194 and linear expan Photo 7 sion valve coil LEV A 1 Remove the service panel See Figure 1 High pressure switch 2 Remove the top panel See Figure 1 TE 4 way valve coil Linear expansion valve Removing the 4 way valve coil 3 Remove 4 way valve coil fixing screw M4 x 6 4 Remove the 4 way valve coil by sliding the coil toward you b Disconnect the connector 2154 green on the controller 4 ps circuit board in the electrical parts box 1 6 Removing the linear expansion valve coil 3 Remove the linear expansion valve coil by sliding the coil 8 upward ga 4 Disconnect the connector L
54. longest 2 minutes after the power supply PLEASE ONormal operation on the remote controller WAIT is displayed to start up Self diagnosis of remote controller Communication error between the remote controller P PLEASE WAIT is displayed for 6 min and indoor unit utes at most in case of indoor outdoor GCommunication error between the indoor and outdoor unit communication error Check LED3 on unit indoor con troller board Outdoor unit protection device connector is open 1 When LED3 is not blinking Check indoor outdoor connecting wire for miswiring Converse wiring of 51 and S2 or break of 53 wiring 2 When LEDS is blinking Indoor outdoor connecting wire is nor mal Check LED display on outdoor controller circuit board Refer to 11 10 Check protection device connector 63H for contact failure Refer to 11 9 3 When pressing the remote controller DAfter cancelling to select function from the remote operation operation switch the OPERATION controller the remote controller operation switch will display is appeared but it will be not be accepted for approx 30 seconds turned off soon 37 Phenomena Factor Countermeasure 4 Even controlled by the wireless remote controller no beep is heard and the unit does not start operat ing Operation display is indicated on wireless remote controller OThe pair number settings of the wireless remote controller and in
55. m 6 Round 9 Clockwise 51 52 53 30 JO 2 5 3 Pay attention to stripe of yellow and green Flat Not applicable Not applicable 090 2 5 3 Because center wire has no cover finish 5 Flat From left to right 51 52 53 18 0900 15 4 peo Round CO Clockwise 51 52 53 30 2 5 4 Connect 51 and 53 to the opposite angle 4 1 Power supply cords of appliances shall not be lighter than design 60245 IEC n DEG MOE lt 3C Flat cable x 2 2 In case that cable with stripe of yellow and green is available c4 62 53 3 In case of regular polarity connection S1 S2 S3 wire size is 1 5 mm 4 In case of regular polarity connection 51 52 53 6 Mentioned cable length is just a reference value 5 In the flat cables are connected as this picture they can be used up to 30 m It may be different depending on the condition of installation Humidity or materials etc Indoor Outdoor separate Wire No x Size mm power supply Max 120m Indoor unit Outdoor unit 2 X Min 0 3 Indoor unit Outdoor unit earth The optional indoor power supply terminal kit is necessary Be sure to connect the indoor outdoor connecting cables directly to the units no intermediate connections Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to earth or a poor electrical contact at the intermediate connection point 15
56. or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs I 15 gt Outdoor outside temperature 7 39 88 error occurring When the temperature is 0 C or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs 15 o 4 Outdoor heaisink temperature TH8 40 200 error occurring When the temperature is 0 C or less and 40 200 temperature are displayed by turns When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns 67 SW2 setting Display detail Explanation for display Discharge superheat on error occurring SHd 0 255 Cooling TH4 TH6 Heating TH4 TH5 0 255 When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 150 C 0 5 secs 0 5secs 2 secs 1 50 gt 4 Subcool on error occurring SC 0 130 Cooling TH6 TH3 Heating TH5 TH2 0 130 When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 115 0 5 secs 0 5secs 2 secs gt 15 gt
57. restricted because the indoor unit s heat exchanger is not fully heated up In addition to that the up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The up down vane will return to the setting specified by the remote controller when STANDBY is released DEFROST is displayed on the screen No air comes out of the unit The outdoor unit gets frosted when the outside temperature is low and the humidity is high DEFROST indicates the DEFROST operation is being performed to melt this frost The DEFROST operation ends in around 10 minutes at most 15 minutes During the DEFROST operation the indoor unit s heat exchanger becomes cold so the fan is stopped The up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The display will turn into STANDBY when DEFROST operation ends 43 Phone Calls From Customers How to Respond The room cannot cooled or heated sufficiently Check the set temperature of remote controller The outdoor unit cannot be operated if the set temperature is not appropriate The outdoor unit operates in the following modes COOL When the set temperature is lower than the room temperature HEAT When the set temperature is higher than the room temperature Check if filters are dirty and clogged
58. the case connecting to system controller 2 Connect the wire to the M NET terminal block Connect one core of the transmission wire non polar to M1 terminal and the other to M2 Peel the shield wire twist the shield part to a string and connect it to S terminal 3 In the system which several outdoor units are being connected the terminal M1 M2 S on M NET terminal block should be individually wired to the other outdoor unit s terminal i e M1 to M1 M2 to M2 and S to S In this case choose one of those outdoor units and drive a Screw to fix an earth wire on the plate as shown on the right figure M NET terminal block N 69 59 EN Earth wire M1 2 sj 69 Me Transmission Shield wire part 9 4 1 M NET address setting In A control models M NET address and refrigerant address should be set only for the outdoor unit Similar to CITY MULTI system there is no need to set the address of outdoor unit and remote controller To construct a central control system the setting of M NET address should be conducted only upon the outdoor unit The setting range should be 1 to 50 the same as that of the indoor unit in CITY MULTI system and the address number should be consecutively set ina same group Address number can be set by using rotary switches SW11 for ones digit and SW12 for tens digit which is located on the M NET board of outdoor unit Initial setti
59. the number of data errors are displayed Data error has occurred ERROR CODE Ri There might be noise or interference on the transmission path or the indoor unit or other remote controllers are defective Check the transmission path and other controllers ERC The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmission path If such a problem is occurring the transmitted data is affected by noise etc Check the transmission path SELF CHECK SE 5 SELF CHECK te When the number of data errors is 02 Transmission data from remote controller Transmission data on transmission path To cancel remote controller diagnosis Press the CHECK button for 5 seconds or more Remote controller diagnosis will be cancelled PLEASE WAIT and operation lamp will blink After approximately 30 seconds the state in effect before the diagnosis will be restored 24 11 3 4 Malfunction diagnosis method by wireless remote controller In case of trouble during operation When a malfunction occurs to air conditioner both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop Malfunction diagnosis method at maintenance service gt Procedure 1 Press the CHECK button twice CHECK lights an
60. to ON Auto recovery activates Please set Auto recovery basically by remote controller because all units do not have DIP SW Please refer to the indoor unit installation manual x3 SW7 1 2 are used for demand control SW7 1 2 are effective only at the demand control Refer to next page Special function b 34 Please do not use SW7 3 5 usually Trouble might be caused by the usage condition 57 2 Function of connectors and switches T Connector Funct Action by open short operation Effective timi es unction ective timin yp Switch Short Open Connector CN31 Emergency operation Start Normal When power supply ON SIND MODEL SW6 SW5 6 SW6 2 Jon mg PG E SW6 3 ooYHA3R 112345678 23456 SW6 seleci or MM MR RM SW6 5 250YHA3R1 12345678 23456 SW5 6 SW6 6 200YHA3R2 ON EDEN I ON SW6 7 200 OFF m 456 ki 8 ER 28456 250YHA3R2 ON NELUEE ON E ET 250YHASRA OFF TE 4 da 28 123456 Special function a Low level sound priority mode Local wiring Unit enters into Low level sound priority mode by external signal input setting Inputting external signals to the outdoor unit decreases the outdoor unit operati
61. value 00 indicates fan control data _ For indoor DC brushless motor control 160 161 162 Indoor unit Model setting information Refer to 13 2 1 Detail Contentsin Request Code 163 Indoor unit Capacity setting information Referto 13 2 1 Detail Contents in Request Code 164 Indoor unit SW3 information Undefined 165 Wireless pair No indoor control board side setting Referto 13 2 1 Detail Contents in Request Code 166 Indoor unit SW5 information Undefined _ 167 189 190 Indoor unit Microprocessor version information Examples Ver 5 01 0501 Ver 191 Indoor unit Microprocessor version information sub No Auxiliary information displayed after version information Examples Ver 5 01 A000 A000 192 764 765 Stable operation Heat mode This request code is not provided to collect data It is used to fix the operation state 766 Stable operation Cool mode This request code is not provided to collect data It is used to fix the operation state 767 Stable operation cancellation This request code is not provided to collect data It is used to cancel the operation state that has been fixed by request codes 765 and 766 81 13 2 1 Detail Contents in Request Code Operation state Request code 0 Data display C 4 Operation mode Relay output state Operation mode
62. wire is attached in the remote controller accessory 4 The figures are NOT against the ground S3 terminal has DC 24 V against S2 terminal However between S3 and S1 these terminals are not electrically insulated by the transformer or other device N Caution Be sure to install N line Without N line it could damage the unit Notes 1 Wiring size must comply with the applicable local and national code 2 Power supply cords and Indoor unit Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord Design 60245 IEC 57 3 Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied 400V 3 phase Isolator m 51 51 A Control so A Control Outdoor uni i Indoor Unit 53 53 A Warning In case of A control wiring there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line Therefore please turn off the main power supply when servicing And do not touch the S1 S2 S3 terminals when the power is energized If isolator should be used between indoor unit and outdoor unit please use 3 pole type Synchronized twin and triple system Electrical wiring
63. 10 20 30 40 50 Temperature High temperature thermistor Thermistor Discharge TH4 Thermistor R120 7 465 2 B constant 4057 296 1 1 Rt 7 465exp 4057 2734 393 G 200 253k0 70 C 34kQ lt 30C 160 80 C 24kQ 40C 104kQ 90C 17 5 i 70 100 C 13 0 9 60C 48kQ 110C 9 8kQ 25 50 75 100 120 Temperature 49 Linear expansion 1 Operation summary of the linear expansion valve Linear expansion valve opens closes through stepping motor after receiving the pulse signal from the outdoor controller board Valve position can be changed in proportion to the number of pulse signal Connection between the indoor controller board and the linear expansion valve Outdoor controller board 4 Orange 3 Li Output 415 Opening a valve 8 7 6 gt 5 4 3 2 1 8 Closing a valve 1 5 2535455565781 The output pulse shifts in above order When linear expansion valve operation stops all output phase become OFF 2 Linear expansion valve operation When the switch is turned on 700 pulse closing valve signal will be sent till it goes to point in order to define the valve position The pulse signal is being sent for about 20 seconds When the valve moves smoothly there is no sound or vibration occurring from the linear expansion valve however when the pulse number moves from 6 to amp or w
64. 107 Operation mode at time of error Displayed inthe same way as request code 0 _ 108 Compressor Operating current at time of error 0 50 A 109 Compressor Accumulated operating time at time of error 0 9999 10 hours 110 Compressor Number of operation times at time of error 0 9999 100 times 111 Discharge temperature at time of error 3 217 112 Outdoor unit Liquid pipe 1 temperature TH3 at of error 40 90 113 Outdoor unit Liquid pipe 2 temperature at time of error 40 90 114 Outdoor unit 2 phase pipe temperature TH6 attime oferror 39 88 115 116 Outdoor unit Outside air temperature at time of error 39 88 117 Outdoor unit Heatsink temperature TH8 at time of error 40 200 118 Discharge superheat SHd at of error 0 255 119 Sub cool SC at time of error 0 130 120 Compressor Operating frequency at time of error 0 255 Hz 121 Outdoor unit at time of error acad Step Fan output step 122 Outdoor unit at time of error 7 0 9999 pm Fan 1 speed Only for air conditioners with DC fan 123 Outdoor unit at time of error 0 9999 roii O is displayed if the air conditioner is a single Fan 2 speed Only for air conditioners with DC fan fan type 124 125 LEV A opening at time of error 0 500 Pulses 126 LEV B opening at time of error 0 500 Pulses 127 128 129 130 Thermo ON time until operation stops due to error
65. 2 Noise filter circuit board N F 90 OPERATING PROCEDURE PHOTOS 4 Removing the thermistor lt Outdoor 2 phase pipe gt TH6 Photo 4 1 Remove the service panel See Figure 1 Remove the top e Figure 1 Electrical parts lt Outdoor 2 phase pipe gt TH6 3 Disconnect the connector TH7 6 red on the controller circuit board in the electrical parts box 4 Loosen the 2 wire clamps on top of the electrical parts box 5 Pull out the thermistor Outdoor 2 phase pipe TH6 from the sensor holder Note In case of replacing thermistor Outdoor 2 phase pipe TH6 replace it together with thermistor Outdoor TH7 since they are combined together Refer to No 6 below to remove thermistor lt Outdoor gt 5 Removing the thermistor Outdoor Photo 5 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connector TH7 6 red on the controller circuit board in the electrical parts box 4 Loosen the 2 wire clamps on top of the electrical parts box See Photo 4 5 Pull out the thermistor Outdoor TH7 from the sensor holder Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Outdoor 2 L Tu7 phase pipe TH6 since they are combined together ped i CHAM Refer to No 5 above to remove thermistor Outdoor 2 phase pipe gt Sensor
66. 5 sec 0 5 sec 0 5 sec starts N Ve E Start signal SN Sn received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates the check code in the following table Output pattern B code in the following table i e 5 for U2 the check code in the 2nd Repeated Beepersounds Beep Beep Beep Beep Beep Beep Beep OPERATION _ IIl faq y re B m INDICATOR gt lt gt lamp blink Off On On O On On Off On On On pattern Self check Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec starts V Se 7 Start signal ue received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates ollowing table r Output pattern A Errors detected by indoor unit L Wireless remote controller Wired remote controller Beeper sounds OPERATION Symptom Remark INDICATOR lamp blinks Check code Number of times 1 P1 Intake sensor error 2 P2 Pipe TH2 sensor error P9 Pipe TH5 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector open P5 Drain pump error As for indoor 5 Forced compressor stop due to water leakage abnormality unit refer to 6 P6 Freezing Overheating protection operation indoor unit s 7 EE Communication err
67. 6 times by over range transmission more and turn the power on again If mal continuously SMS 5 function was accidental the unit returns to Note The address and attribute displayed EE IR m normal If the same abnormality generates at remote controller indicate the con me again controller of displayed address and troller that did not reply ACK E WL e attribute may be defective by type unmatched transmis sion wire With shield wire CVVS CPEVS With normal wire no shield CVV CVS VVR VCT Diameter 1 25mm or more Accidental malfunction of abnormality generated control ler 11 5 TROUBLESHOOTING BY INFERIOR PHENOMENA Phenomena Factor Countermeasure 1 Remote controller display does not DDC12V is not supplied to remote controller Check LED2 on indoor controller board work Power supply display is not indicated on LCD 1 When LED is lit DC12 15V is supplied to remote controller however Check the remote controller wiring for no display is indicated breaking or contact failure PLEASE WAIT is not displayed 2 When LED is blinking PLEASE WAIT is displayed Check short circuit of remote controller wiring 3 When LED is not lit Refer to No 3 below Check the following Failure of remote controller if PLEASE WAIT is not displayed Refer to No 2 below if PLEASE WAIT is displayed 2 PLEASE WAIT display is remained DAt
68. EV A white on the controller circuit board in the electrical parts box 4 way valve coil fixing screw 4 way valve 8 Removing the 4 way valve Photo 8 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 8 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 right side panel fixing screws 5 x 12 in the rear of the unit then remove the right side panel 5 Remove the 4 way valve coil See Photo 7 6 Recover refrigerant 7 Remove the welded part of 4 way valve Linear expansion valve coil LEV A 9 Removing the linear expansion valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 right side panel fixing screws 5 x 12 in the rear of the unit then remove the right side panel 5 Remove the linear expansion valve coil 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the parts of refrigerant cir cuit cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes
69. MITSUBISHI ELECTRIC Changes for the Better SPLIT TYPE HEAT PUMP AIR CONDITIONERS SERVICE MANUAL R410A Outdoor unit Model names PUHZ P200YHA PUHZ P250YHA PUHZ P200YHA3 PUHZ P250YHA3 QJ f A PUHZ P200YHA3R1 R2 R3 PUHZ P250YHA3R1 R2 R3 55 lt lt November 2010 No OCH424 REVISED EDITION D Revision Service Ret PUHZ P200 250VHASR PUHZ P200YHA REVISED EDITION D PUHZ P250YHA eM PU HZ P200YHA3 Please void 424 PU HZ P200YHAS3R1 REVISED EDITION C PU HZ P200 YHA3R2 iue manual describes only PU HZ P200YHA3 R3 service data of the outdoor units RoHS li d PUHZ P250YHA3 ee PUHZ P250YHA3R1 e PUHZ P250YHA3R2 PUHZ P250YHA3R3 CONTENTS 1 TECHNICAL CHANGES 2 2 REFERENCE MANUAL 2 3 SAFETY 55 3 FEATURES mee 6 5 SPECIFICATIONS 2 7 6 EE 8 7 OUTLINES AND 10 8 WIRING DIAGRAN 12 9 WIRING SPECIFICATIONS 13 10 REFRIGERANT SYSTEM DIAGRAM 18 11 TROUBLESHOOTING 20 12 FUNCTION SETTING 70 13 MONITORING THE
70. OR OPERATION CONDITION Check Points 5 Good Retightened 8 8 z Terminal block Outdoor Unit Good Retightened e s Indoor Unit Good Retightened Insulation resistance MO Voltage V 5 Accumulated operating time Time E Number of ON OFF times Times 9 Current A o Refrigerant heat exchanger temperature COOL HEAT 8 Refrigerant discharge temperature COOL C HEAT 5 8 Air outside air temperature COOL HEAT 5 e Air discharge temperature COOL HEAT Appearance Good Cleaning reguired 5 g Heat exchanger Good Cleaning required Sound vibration Present e Air intake air temperature COOL C HEAT 8 Air discharge temperature COOL HEAT 8 Refrigerant heat exchanger temperature COOL HEAT S Filter operating time Time 5 a Decorative panel Good Cleaning required 9 Filter Good Cleaning reguired Fan Good Cleaning reguired 5 Heat exchanger Good Cleaning required Sound vibration None Present The filter operating time is the time that has elapsed since the filter was reset Judgment cc Check item Normal Filter inspection Normal operation state Filter may be clogged 1 Inspection A Performance has dropped Detailed in spection is necessary Inspection B Re
71. OTE REMOTE MAIN MAIN N N 0 1 Average data of the indoor units No 2 The data of the sensor on the indoor unit that connected with remote controller No 3 The data of the sensor on main remote controller 70 2 Functions available when setting the unit number to 01 04 AL 07 in case of wireless remote controller When setting functions for an indoor unit in an independent system set the unit number to 01 referring to O setting the unit number of Operating Procedure When setting functions for a simultaneous twin triple quadruple indoor unit system set the unit number to 01 to 04 for each indoor unit in case of selecting different functions for each unit referring to setting the indoor unit number of Operating Procedure When setting the same functions for an entire simultaneous twin triple quadruple indoor unit system set refrigerant address to AL 07 in case of wireless remote controller referring to setting the indoor unit number of Operating Procedure Function Settings Initial setting Factory setting Not available 4 Way cassette Setting No Ceiling concealed Ceiling suspended Wall mounted PLA BA PEAD EA 2 PEA GA PCA GA 2 Air flow Quiet ON Filter sign 100h 2500h 07 e No filter sign indicator Fan speed Standard High ceiling No of air outlets 4 directions 3 directions 2 d
72. P100BA3 140BA2 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F Display Capacity setting state Display Capacity setting state 00 12 10 112 01 16 11 125 02 22 12 140 03 25 13 160 04 28 14 200 05 32 15 224 06 35 36 16 250 07 40 17 280 08 45 18 09 50 19 0A 56 1A Ob 63 1b OG 71 1C Od 80 1d 0E 90 1E 100 Wireless pair indoor control board side setting Request code 165 Data display 0 0 See the table the right Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 3 J41 J42 disconnected 86 14 EASY MAINTENANCE FUNCTION e Reduces maintenance work drastically e Enables you to check operation data of the indoor and outdoor units by remote controller Furthermore use of maintenance stable operation control that fixes the operating frequency allows smooth inspection even for inverter models Smooth Mainte nance Function Discharge temperature 64 Conventional inspection work aa MITSUBISHI ELECTE Outdoor unit 6 indoor unit SUT gul Remove the Measure J service panel the intake air nn temperature uu aao 3 TEMP Easy maintenance information unit Accumulated operating Heat exchanger Intake air time
73. Parts name Check points Thermistor TH3 Outdoor pipe Thermistor TH4 Discharge Thermistor TH6 Disconnect the connector then measure the resistance with a tester At the ambient temperature 10 C 30 Normal Abnormal Outdoor 2 phase pipe TH4 160kQ 410kQ Thermistor TH7 TH3 Outdoor TH6 Open or short 4 3kQ 9 6kQ TH7 Fan motor MF1 MF2 Refer to next Solenoid valve coil Measure the resistance between the terminals with a tester Four way valve At the ambient temperature 20C 2154 Abnormal 1435 1500 Open shori Motor for compressor Measure the resistance between the terminals with a tester MC U Winding temperature 20 C Normal Abnormal 0 300 Open or short Linear expansion valve Disconnect the connector then measure the resistance with a tester Winding temperature 20 C Normal Abnormal Gray Black Gray Red Gray Yellow Gray Orange 46 30 Open short 47 Check method of DC fan motor fan motor outdoor controller circuit board Notes High voltage is applied to the connecter 2 for the fan motor Pay attention to the service Do not pull out the connector 2 for the motor with the power supply on It causes trouble of the outdoor controller circuit board and fan motor
74. R2 PUHZ P250YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA3R3 CN2 Connect to the outdoor controller circuit board CN2 Power circuit board Transmitting signal to the controller board 0 5V DC Zero cross signal 0 5V DC amp 16V DC 16V DC c gt 7EY gt AAA i i e CN4 Connect to the pt troller circuit board 25 8 om al Detection of primary Jr current Connect 88 to the outdoor h noise filter circuit board 1 connecter Connect to DCL X52A Connect to the RS resistor Not used 9 69 0 0 0 0 Brief Check of POWER MODULE Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc If they are short circuited it means that they are broken 1 Check of POWER MODULE O Check of DIODE circuit L1j P1 L2 IP1 IET HNT1 IL2 IN1I IL3 IN1 Check of IGBT circuit P2 U 2 P2 W IN2 U 2 2 lt Note The marks Li 22 L3 N1 N2 P1 P2 JU and W shown in the diagram a
75. Remote controller transmission error E0 signal receiving error E4 O Abnormal if main or sub remote con troller cannot receive any transmission normally from indoor unit of refrigerant address 0 for 3 minutes Error code EO Abnormal if sub remote controller could not receive any signal for 2 minutes Error code EO O Abnormal if indoor controller board can not receive any data normally from remote controller board or from other indoor controller board for 3 minutes Error code E4 Indoor controller board cannot receive any signal from remote controller for 2 minutes Error code E4 O Contact failure at transmission wire of remote controller All remote controllers are set as sub remote controller In this case EO is displayed on remote controller and E4 is displayed at LED LED1 LED2 on the outdoor controller circuit board G Miswiring of remote controller Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board of refrigerant address 0 Noise has entered into the transmission wire of remote controller Check disconnection or looseness of indoor unit or transmission wire of remote controller Set one of the remote controllers main If there is no problem with the action above Check wiring of remote controller Total wiring length max 500m Do not use cable x 3 or more The number of connec
76. S2 on the terminal block TB4 of the indoor unit which is used to connect the indoor unit and the outdoor unit AC 198V to AC 264V NO YES Check the voltage among L Ls and N on the terminal block TB1 of the outdoor power circuit board AC 198V to AC 264V NO YES Check the voltage between S1 and S2 on the terminal block TB1 of the outdoor unit which is used to connect the indoor unit and the outdoor unit AC 198V to AC 264V Check the voltage of indoor controller board CN2D YES DC 12V to DC 16V NO Check the voltage of the unit after removing the indoor power board CN2S YES DC 12V to DC 16V NO Troubles concerning power supply Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Defective indoor controller board Miswiring breaking or poor connection of in door outdoor connecting wire Defective indoor power board Check the power wiring to the outdoor unit Check the breaker Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses are blown The fuses on the outdoor controller circuit board will be blown when the indoor outdoor connecting wire short circuits
77. ant address approximately 3 seconds after being to be diagnosed selected and the self diagnosis process will begin Q Display self diagnosis results When there is error code history Alternating Display SELF nM nl D cu IN are LE nn LILI Error code 2 or 4 Address 3 digits or unit number 2 digits When there is no error code history When there is no corresponding unit sELFCHECK DVC SELFCHECK PPE ee ERROR GORE b ERROR LILI LILI e Reset the error history Display the error history in the diagnosis result display screen see step SELF CHECK P 5 EL E c al sa ERROR GOD zi nn 205 LILI LILI 23 Press the ON OFF button twice within seconds The self diagnosis When the error history is reset the display will look like the one shown below address or refrigerant address will blink However if you fail to reset the error history the error content will be displayed again SELF CHECK Eh SELF E dcs d gt ERROR GORE NI LI LI e LILI Cancel self diagnosis Self diagnosis can be cancelled by the following 2 methods Press the CHECK button twice within 3 seconds 2 Self diagnosis will be cancelled and the screen will return to the previous state in effect before the start of self diagnosis Press t
78. ard Reenter the unit number setting Select a mode Press the temp button to set a mode Press 24 to turn on the function that raises the set temperature by 4 degree during heat operation Direct the wireless remote controller toward the sensor of the indoor unit and press the button The sensor operation indicator will blink and beeps will be heard to indicate the current setting number Current setting number 1 1 beep 1 second 2 2 beeps 1 second each 3 3 beeps 1 second each mode number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the mode number If the signal was not received by the sensor you will not hear a beep a double ping sound may be heard Reenter the mode number Select the setting number Press the temp button to select the setting number 02 Not available Direct the wireless remote controller toward the receiver of the indoor unit and press the button The sensor operation indicator will blink and beeps will be heard to indicate the setting number Setting number 1 2 beeps 0 4 seconds each 2 2 beeps 0 4 seconds each repeated twice 3 2 beeps 0 4 seconds each repeated 3 times If a setting number that cannot be recognized by the unit is entered the setting will turn back to the original setting If the signal was not received by the sensor you will not hear a beep or a double ping sound
79. ata 50C 5C 45C Discharge superheat SHd Cooling TH4 TH6 Tc Ta Heating TH4 TH5 Td 50 Degree of subcooling SC Cooling TH6 TH3 Ta 45 Heating TH5 TH2 50 45 5C 53 11 9 TEST POINT DIAGRAM Outdoor controller circuit board CAUTION TEST POINTO is high voltage PUHZ P200YHA PUHZ P250YHA PUHZ P200YHA3 PUHZ P250YHA3 PUHZ P200YHA3R1 PUHZ P250YHAS3R1 PUHZ P200YHA3R2 PUHZ P250YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA3R3 SW7 SMAN defrost detect history record reset Demand control setting SW6 Model select SW4 Test operation SWP Pump down SW5 Function switch 8 Wiring replace CNM Connect to A control service tool CNMNT Connect to M NET adapter CN5 Connect to M NET adapter CND LEV A Linear expansion valve TH4 Thermistor Discharge TH3 Thermistor Outdoor pipe TH7 6 Thermistor Outdoor 2 phase pipe 63H High pressure switch Vra TEST POINT Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as CNF1 Vsp TEST POINT Voltage between pins of C5A C5B DC OV when stopped 1 6 5V when operated Kari ae 0 ooo refrigerant address es Oso cst o et esc GO
80. ata request The requested data will be displayed at in the same way as in maintenance mode Data collected during operation of the remote controller will be displayed The collected data such as temperature data will not be updated automatically even if the data changes To display the updated data carry out step 4 again Canceling the Monitoring the operation data 6 While Maintenance monitor is displayed press the CHECK button for 3 seconds to return to maintenance mode 7 To return to normal mode press the ON OFF button 77 13 2 REGUEST CODE LIST Certain indoor outdoor combinations do not have the request code function therefore no request codes are displayed 2 8 M Request content Unit Remarks Display range 0 Operation state Referto 13 2 1 Detail Contents Request Code _ 1 Compressor Operating current rms 0 50 A 2 Compressor Accumulated operating time 0 9999 10 hours 3 Compressor Number of operation times 0 9999 100 times 4 Discharge temperature TH4 3 217 5 unit Liquid pipe 1 temperature TH3 40 90 6 Outdoor unit Liquid pipe 2 temperature 40 90 7 unit 2 phase pipe temperature TH6 39 88 8 9
81. ated Abnormal if high pressure switch 63H oper ated during compressor operation 4 15 MPa 63H High pressure switch Q Short cycle of indoor unit Clogged filter of indoor unit Decreased airflow caused by dirt of indoor fan Dirt of indoor heat exchanger Locked indoor fan motor Malfunction of indoor fan motor Defective operation of stop valve Not full open Clogged or broken pipe Locked outdoor fan motor Malfunction of outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger Decreased airflow caused by defective inspection of outside temperature thermistor It detects lower temperature than actual temperature Disconnection or contact failure of connector 63H on outdoor controller board Disconnection or contact failure of 63H connection 46 Defective outdoor controller board 42 Defective action of linear expansion valve 48 Malfunction of fan driving circuit O OCheck indoor unit and repair defect Check if stop valve is fully open Check piping and repair defect Check outdoor unit and repair defect Check the inspected temperature of outside temperature thermistor on LED display SW2 on A Control Service Tool Refer to 11 10 5 49 Turn the power off and check F5 is displayed when the power is turned again When F5 is displayed refer to Judgment and action for F5 Check linear expansion valve Refer to 11 6 48 Replace o
82. ayed on the remote controller in case of D and 9 DEFROST will be displayed on the screen in case of 9 The airflow direction does not change Up down vane left right louver 1 Check if the vane is set to a fixed position Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner does not have that function NOT AVAILABLE will be displayed on the remote controller when AIR DIRECTION or LOUVER button is pressed The air conditioner starts operating even though any buttons on the remote controller are not pressed O Check if you set ON OFF timer The air conditioner starts operating at the time designated if ON timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Check if power is recovered from power failure black out The units will automatically start operating when power is recovered after power failure black out occurs This function is called power failure automatic recovery The air conditioner stops even though any buttons on the remote controller are not pressed O Check
83. be restarted for 3 minutes This control is also applied when the unit is turned on and off by remote controller Error code appears and blinks on the display of remote controller Error code will be displayed if any protection devices of the air conditioner are actuated What is error code Refer to SELF DIAGNOSIS ACTION TABLE Check if servicing is required for the error Remote controller O PLEASE WAIT is displayed on the screen Wait around 2 minutes An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner PLEASE WAIT will be kept being displayed while that time FILTER is displayed on the screen This indicates that it is time to clean the air filters Clean the air filters Press the FILTER button on the remote controller twice to clear FILTER from the display See the operation manual that came with the product for how to clean the filters Display time of FILTER depends on the model Long life filter 2500 hrs Regular filter 100 hrs STANDBY is displayed on the screen G This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes later While STANDBY is displayed on the remote controller the airflow amount will be
84. board 30 D Check or replace the DC fan motor Check the voltage of the outdoor circuit controller board during operation G Replace the outdoor circuit controller board When the failure is still indicated even after performing the remedy D above Error Code Abnormal point and detection method Case Judgment and action Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Abnormal if any of followings are detected during compressor operation Instantaneous decrease of DC bus volt age to 400V Increase of DC bus voltage to 760V Decrease of input current of outdoor unit to 0 5A only if operation frequency is more than or equal to 40Hz or compres Sor current is more than or equal to 5A O Decrease of power supply voltage Disconnection of compressor wiring Defective 52C drive circuit of outdoor power circuit board Disconnection or loose con nection of CN5 on the outdoor power circuit board Disconnection or loose con nection of CN2 on the outdoor power circuit board amp Defective outdoor controller cir cuit board O Check the facility of power supply Correct the wiring U V W phase to compressor Refer to 11 9 Outdoor power circuit board 9 Replace outdoor power circuit board Check 5 wiring on the outdoor power circuit board Refer to 11 9 Check CN2 wiring on the outdoor power circuit board
85. ccur in refrigerant and the efficiency will be lowered Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released 1 Cautions for service 1 Perform service after recovering the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder for R410A on the market is syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only R410A Use the existing fitting specifications UNF 1 2 Use high tension side pressure of 5 3MPa G or over Charge hose Only R410A Use pressure performance of 5 09MPa G or over Electronic scale Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Refrigerant cylinder Only for R410A _ Top of cylinder Pink Cylinder with syph
86. ce Ref PUHZ P200YHA PUHZ P200YHA3 PUHZ P200YHA3R1 PUHZ P200YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA PUHZ P250YHA3 PUHZ P250YHA3R1 PUHZ P250YHA3R2 PUHZ P250YHA3R3 For pipe longer than 30 m additional charge is required at 20 PUHZ P200 250YHA3 PUHZ P200 250YHA3R1 PUHZ P200 250YHA pyHz P200 250YHA3R2 PUHZ P200 250YHA3R3 6 2 COMPRESSOR TECHNICAL DATA ANB52FFJMT ANB52FFPMT 2 Compressor model Winding Resistance 9 6 3 NOISE CRITERION CURVES PUHZ P200YHA MICROPHONE PUHZ P250YHA MODE SPL dB LINE 0 Im PUHZ P200YHA3 R1 R2 R3 COOLING 59 UNIT PUHZ P250YHA3 R1 R2 R3 59 _ 90 r 1 1 1 5m a 70 GROUND 60 50 40 30 20 THRESHOLD OF L F HEARING FOR 4 X E T CONTINUOUS JNC 20 NOISE E I OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB F F 4 L 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 6 4 STANDARD OPERATION DATA Representative matching PEA RP200GA PEA RP250GA Mode Cooling Heating Cooling Heating Capacity 19 000 22 400 22 000 27 000 Input 7 21 7 36
87. charge the condenser before the work involving the electric parts Precautions during the repair service Do not perform the work involving the electric parts with wet hands Do not pour water into the electric parts Do not touch the refrigerant Do not touch the hot or cold areas in the refrigerating cycle When the repair or the inspection of the circuit needs to be done without turning off the power exercise great caution not to touch the live parts 3 2 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes Do not use refrigerant other than R410A In case of using the existing pipes for R22 be careful with the followings Be sure to clean the pipes and make sure that the insides of the pipes are clean Change flare nut to the one provided with this product Use a newly flared pipe Avoid using thin pipes If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickne
88. continuous times Error code Q Abnormal if indoor controller board could not find blank of transmission path Error code E5 Indoor controller board receives trans mitted data at the same time compares the data and when detecting it judges different data to be abnormal 30 continuous times Error code E5 Q 2 remote controllers are set as main In case of 2 remote cotrollers Remote controller is connected with 2 indoor units or more G Repetition of refrigerant address Defective transmitting receiving circuit of remote controller O Defective transmitting receiv ing circuit of indoor controller board Noise has entered into trans mission wire of remote control ler O Set a remote controller to main and the other to sub Connect remote controller with only one indoor unit Change the address to a separate setting Diagnose remote controller a When RC OK is displayed remote con trollers have no problem Turn the power off and on again to check When becoming abnormal again replace indoor controller board b When is displayed replace remote controller c When or ERC 00 66 is dis played noise may be causing abnormal ity Indoor outdoor unit communication error Signal receiving error Outdoor unit 1 Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes Q Contact failure of indo
89. current External finish Munsell 3Y 7 8 1 1 Refrigerant control Compressor Model Linear Expansion Valve Hermetic YHA ANB52FFJMT or ANB52FFPMT YHAS R1 R2 ANB52FFPMT Motor output 4 7 5 5 Starter type Line start Protection devices HP switch Discharge thermo Crankcase heater w Heat exchanger Plate fin coil Fan Fan drive x No Propeller fan x 2 Fan motor output kW 0 150 0 150 Airflow 2 cc a D m min L s 130 2170 Defrost method Reverse cycle Noise level Cooling dB Heating dB Dimensions mm in 950 37 3 8 D mm in 330 30 13 1 3 16 H mm in 1 350 53 1 8 Weight kg lbs 126 278 133 294 1 82 135 298 Refrigerant R410A Charge kg lbs 5 8 12 8 7 1 15 7 Oil Model L 2 30 FV50S Pipe size O D Liquid mm in 9 52 3 8 12 7 1 2 Gas mm in 25 4 1 25 401 Connection method Indoor side Flared Outdoor side Flared amp Brazing Between the indoor amp outdoor unit REFRIGERANT PIPING Height difference Max 30m Piping length Max 70m 6 DATA 6 1 REFILLING REFRIGERANT CHARGE R410A Piping length one way Factory 30m 40m 50m charged Servi
90. d refrigerant 4 MITSUBISHI ELECTRIC pb address 00 blinks display Check that remote controller s CHECK display has stopped before continuing display 2 Press the temperature Select the refrigerant address of the buttons indoor unit for the self diagnosis ON OFF amp TEMP Note Set refrigerant address using the OG outdoor unit s DIP switch SW1 For more information see the outdoor unit installation manual e FAN AUTOSTOP BO OHO 2 MODE SANE AUTOSTAR 3 Point the remote controller at the If an air conditioner error occurs the 160 1 Houa sensor on the indoor unit and indoor unit s sensor emits an intermit CHECK LOUVER h press the HOUR button tent buzzer sound the operation lamp ER ET blinks and the error code is output button It takes 3 seconds at most for error se eer code to 4 Point the remote controller the The check mode is cancelled sensor on the indoor unit and press the ON OFF button 25 Refer to the following tables for details the check codes Output pattern A code in the following table i e 5 for P5 Beepersounds Beep Beep Beep Beep Beep Beep Beep OPERATION ees qt 2 18 2nd Repeated INDICATOR 4 5 lamp blink Off On O O On Off On On pattern Self check Approx 2 5 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2
91. door controller board are mismatched Check the pair number settings 5 When operating by the wireless remote controller beep sound is heard however unit does not start operating ONo operation for 2 minutes at most after the power supply ON Local remote controller operation is prohibited Remote controlling adaptor is connected to CN32 on the indoor controller board Local remote controller operation is prohibited by centralised controller etc since it is connected to MELANS Phenomena of 2 Normal operation Check the phenomena of No 2 Remote controller display works normally and the unit performs cool ing operation however the capacity cannot be fully obtained The air is not cool enough ORefrigerant shortage Filter clogging GHeat exchanger clogging duct short cycle O If refrigerant leaks discharging tempera ture rises and LEV opening increases Inspect leakage by checking the tem perature and opening Check pipe connections for gas leakage GOpen intake grille and check the filter Clean the filter by removing dirt or dust on it 9 If the filter is clogged indoor pipe tem perature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pressure Clean the heat exchanger Remove the blockage 7 Remote controller display works normally and the unit performs heat ing operation however the capac
92. e Display amp INDOOR UNIT INDOOR UNIT INDOOR UNIT INLET TEMP H EXC TEMP FILTER USEH 6 Press the FILTER button to confirm the setting Display example for accumulated operating time 3 Display 27557 c Waiting for response I 1 After approx 12 340 hours 10 seconds 7 Data is displayed on the display at To check the data for each item repeat steps 5 to 7 8 To cancel maintenance mode press the TEST button for seconds or press the ON OFF button E Refrigerant address Single refrigerant system Multi refrigerant system group control In the case of single refrigerant system the refrigerant Up to 16 refrigerant systems 16 outdoor units can be address is 00 and no operation is required Simultaneous connected as a group by 1 remote controller To check or twin triple and quadruple units belong to this category set the refrigerant addresses Single refrigerant system 1 1 Twin Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant address address address address address 00 address 00 Outdoor unit Indoor unit 01 Remote controller Outdoor unit 15 Outdoor unit Indoor unit 01 02 Outdoor unit Indoor unit 01 01 Outdoor unit Indoor unit 01 00 Outdoor unit Indoor unit 01 Remote controller Indoor unit 02 Indoor unit 01 Remote controller 88 14 2 GUIDE F
93. e continuity of contactor 52C Check if power supply voltage decreases GCheck the wiring of CN52C Check the wiring of CNAF 1 blinking Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor Liquid TH2 Abnormality of pipe temperature thermistor Condenser Evaporator Check if connectors CN20 CN21 CN29 and CN44 on indoor controller board are not disconnected Measure resistance value of indoor thermistors 2 blinking Abnormality of drain sensor DS Float switch connector open Indoor drain overflow protection Check if connector CN31 CN4F on indoor controller board is not disconnected Measure resistance value of indoor thermistors GMeasure resistance value among terminals on drain pump using a tester Check if drain pump works GCheck drain function 3 blinking Freezing cooling overheating heating protection QCheck if indoor unit has a short cycle on its air duct Check if heat exchanger and filter is not dirty Measure resistance value on indoor and outdoor fan motors Check if the inside of refrigerant piping is not clogged 4 blinking Abnormality of pipe temperature Check if indoor thermistors TH2 and TH5 are not disconnected from holder Check if stop valve is open GCheck converse connection of extension pipe on plural units connection Check if indoor outdoor connecting wire is connected correct
94. e controller PAR 21MAA Check if noise entered into transmission wire of remote controller Check if noise entered into indoor outdoor connecting wire Re check error by turning off power and on again 5 blinking Serial communication error Check if connector CN4 on outdoor controller board and Sen eue outdoor power board is not disconnected board GUCheck if there is poor connection of connector on outdoor QU MN controller board CNMNT and CNVMNT Check M NET communication signal Communication error of M NET system X1 Error code displayed on remote controller x2 Refer to service manual for indoor unit 59 Indication Outdoor con troller board LED1 Green LED2 Red Contents Inspection method 3 blinking 1 blinking Abnormality of discharging temperature TH4 Shortage of refrigerant Check if stop valves are open Check if connectors TH4 LEV A on outdoor controller board are not disconnected GCheck if unit is filled with specified amount of refrigerant Measure resistance values among terminals on outdoor linear expansion valve using a tester 2 blinking Abnormal high pressure High pressure switch 63H operated Abnormal low pressure Check if indoor outdoor units have a short cycle on their air ducts Check if connector 63H on outdoor controller board is not disconnected GCheck if heat exchange
95. e e e E e e e F e e e e Outdoor unit Capacity setting display Request code 70 Data display Capacity 9 35 10 50 11 60 14 71 20 100 25 125 28 140 40 200 50 250 Outdoor unit Setting information Request code 71 Data display 0 O0 Setting information Setting information D Setting information D Display Defrost mode 0 Standard 1 For high humidity Setting information Heat pump Display Single 3 phase cooling only Single phase Fiet pump Cooling only Heat pump 3 phase Cooling only 84 Outdoor unit switch setting display SW1 to SW10 except SW3 Request codes 73 to 82 0 Switch OFF 1 Switch ON 0 Switch OFF 1 Switch ON a a Data display 1 gt n Data display 1 00 00 olololo 00 00 1lololololo 00 01 1lololo 00 01 00 02 1 00 02 0 00 03 1 1 0 00 03 1 1 00 04 1 1 00 04 11 1 00 05 110 00 05 1111
96. e panel Grille fixing screws Grille fixing screws Service panel fixing screws Cover 2 Removing the fan motor MF1 MF2 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille See Figure 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 1 5 Disconnect the connectors CNF1 and CNF2 on controller circuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See Photo 2 li panel front o Photo 1 Front panel Photo 2 Fan Propeller Fan motor fixing screws motor Nut Fan motor fixing screws 3 Removing the electrical parts box 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the indoor outdoor connecting wire and power supply wire from terminal block 4 Disconnect the connectors on the controller circuit board 5 Remove the terminal cover and disconnect the compressor lead wire 6 Remove an electrical parts box fixing screw 4 x 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Electrical parts box fixing screw Photo 3 Electrical parts box Controller circuit board C B Terminal block TB1 Terminal block TB
97. e to which the refrigerant address has been set performs fan operation there may be another refrigerant address that is the same as the specified one In this case check the DIP switch of the outdoor unit to see whether such a refrigerant address exists amp Select the mode number Press the B TEMP buttons v and D to set the desired mode Mode number number display section Only the selectable mode numbers can be selected C3 S oon vou Gin Mode number 02 Indoor temperature detection Select the setting content for the selected mode Press the E TEMP buttons and A to select the desired setting O Press the MENU button The currently selected setting number will number flash so check the currently set content t nn LIU LIU UU ri EUMD udi e d Setting number display section BE Setting number 1 Indoor unit operating average sang number 3 Remote controller built in sensor Register the settings you have made in steps to The mode number and setting number will stop flashing and remain lit indicating the Press the MODE button The mode number and setting number will start end of registration to flash and registration starts ELIHCTIOH nn ELIHCTIOH nn nn rm rita LIU LIU er FATIALI LILI LIU 4 SELe Lien 4 jea LIG e LI e If is displayed for both
98. efrigerant flow in heating i h h Ball valve Se e Outdoor heat exchanger check UN check cay Refrigerant GAS pipe 25 4 91 inch Thermistor TH6 Thermistor Strainer High pressure protect switch Distributor Compressor Strainer Refrigerant LIQUID pipe P200 49 52 43 8 inch P250 12 7 1 2 inch Strainer inear expansion valve Stop valve 100 p with service port PUHZ P200YHA3R3 PUHZ P250YHA3R3 Refrigerant flow in cooling Refrigerant flow in heating Service port Ball valve check Outdoor heat exchanger Thermistor TH7 Refrigerant GAS pipe 25 4 91 inch Thermistor TH6 Thermistor Distributor Strainer High pressure 4 way valve LF protect switch gt Service port check Compressor Strainer Refrigerant LIQUID pipe P200 49 52 43 8 inch P250 12 7 1 2 inch Strainer T Stop Salve 4100 inear expansion valve with service port 18 10 1 Refrigerant recovering pump down Perform the following procedures to recover refrigerant while operating the indoor unit or the outdoor unit O Turn on the power supply circuit breaker x When power is supplied make sure that CENTRALLY CONTROLLED is not displayed on the remote controller If CENTRALLY CONTROLLED is displayed the refrigerant recovering pump down cannot be completed normally A
99. emote controller Indoor unit 2 x 0 3 Non polar Indoor unit L N AC 230 V Indoor unit Outdoor unit 51 52 Circui rating Indoor unit Outdoor unit 52 53 DC24 V Remote controller Indoor unit DC12 V 1 A breaker with at least 3 0 mm contact separation in each pole shall be provided Use earth leakage breaker NV The breaker shall be provided to ensure disconnection of all active phase conductor of the supply 2 Max 120m 3 The 10 m wire is attached in the remote controller accessory Max 500 m 4 The figures are NOT always against the ground Notes 1 Wiring size must comply with the applicable local and national code 2 Power supply cables and indoor unit outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable Design 60245 IEC 57 3 Install an earth longer than other cables 14 If the indoor and outdoor units have separate power supplies change the connections of the connectors as shown in the following figure Electric heater For models with hi Sater Connectors L N Sj Og E GRANGE 5 Indoor unit control board Separate indoor unit outdoor unit power supplies 9 3 INDOOR OUTDOOR CONNECTING CABLE WIRING SPECIFICATIONS FOR 220 240 V 50 Hz INDOOR OUTDOOR CONNECTING CABLE Cross section of cable Wire size mm Number of wires Polarity L
100. en abnormality is detected O Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote con troller is not connected to terminal block for central control TB7 of outdoor unit Check if transmission wire of indoor unit FRESH MASTER LOSSNAY is not con nected to terminal block for transmission wire of outdoor unit Check if terminal block for transmission wire TB3 and terminal block for central control 7 is not connected Check transmission waveform or noise on transmission wire Error Code Abnormal point and detection method Case Judgment and action Communication error with communica tion processor Defective communication between unit processor and transmission processor Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality O Data of transmission proces Sor or unit processor is not transmitted normally because of accidental trouble such as noise or thunder surge Address forwarding from unit processor is not transmitted normally because of defective transmission processor hard ware Turn off the power supply of outdoor unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again System returns nor mally if abnormality was accidental malfunc tion If the same abnormality generates again abnormality generated controller may be defec t
101. error code of the unitthatfirstexperiencedtrouble i e the unitthattransmittedthe error Rs OCLOCK Jai code will be displayed 8 To clear the error code press the ON OFF button Alternating Display CHECK E or ERROR GODE n7 INK nn Sie uu e LILI e Error code 2 or 4 digits Address 3 digits or unit number 2 digits When using remote local controller combined operation cancel the error code after turning off remote operation During central control by a MELANS controller cancel the error code by pressing the ON OFF button 11 3 2 Self Diagnosis During Maintenance or Service Since each unit has a function that stores error codes the latest check code can be recalled even if it is cancelled by the remote controller or power is shut off Check the error code history for each unit using the remote controller Set the unit number or refrigerant address you want to diagnose O Switch to self diagnosis mode O Press the TEMP buttons Cv and CA to select the desired number Press the CHECK button twice within 3 seconds The display content or address The number address changes between 01 and 50 or 00 will change as shown below and 15 20 LILI The refrigerant address will begin to flash Unit number or refriger
102. ferring to copper pipe flaring dimensions for R410A below For 1 2 and 5 8 inch the dimension B changes Use torque wrench corresponding to each dimension a J Flare dimensions Nominal dimensions inch Outside diameter e 7777777777277773 mm Dimension A 5 R410A R22 dimensions inch T EN y NG Dimension B Flare nut dimensions Nominal Outside mm Dimension B diameter R410A R22 1 4 9 1 9 0 17 0 17 0 3 8 13 2 13 0 22 0 22 0 1 2 16 6 16 2 26 0 24 0 5 8 19 7 19 4 29 0 27 0 3 4 Tools and materials Gauge manifold Charge hose 24 0 Air purge refrigerant charge and Operation check 23 3 R410A tools Tool exclusive for R410A Tool exclusive for R410A 36 0 36 0 Can R407C tools be used Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant recovery Tool exclusive for R410A Refrigerant cylinder Refrigerant charge Tool exclusive for R410A Applied oil Apply to flared section Ester oil ether oil and alkylbenzene oil minimum amount Ester oil ether oil O Alkylbenzene oil minimum amount Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R410A
103. frigerant amount is dropping Inspection C Filter or indoor heat exchanger may be clogged The above judgement is just guide based on Japanese standard conditions It may be changed depending on the indoor and outdoor temperature 1 It may be judged as Filter inspection due to the outdoor and indoor temperature even though it is not clogged 89 Enter the temperature differences between and into the graph given below Operation state is determined according to the plotted areas on the graph For data measurements set the fan speed to Hi before activat ing maintenance mode Result Classification Inspection 15 0000 displayed stably on the remote Stable Unstable controller 3 Temperature Discharge temperature Outdoor c difference heat temperature Indoor intake air temperature c Indoor heat exchanger temperature Inspection Eno re stably on the remote Stable Unstable 5 Temperature 6 Discharge temperature amp Indoor c I difference heat exchanger temperature amp Indoor heat exchanger temperature c Indoor intake air temperature Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 C or higher or indoor intake air temperature is 23 C or lower B In heat mode outdoor intake air temperature is 20 C or
104. frost finished lt Pipe temperature is less than or equal to 8C Forced defrost will finish if certain conditions are satisfied Forced defrost can be done if above conditions are satisfied when DIP SW1 1 is changed from OFF to ON After DIP SW1 1 is changed from OFF to ON there is no problem if DIP SW1 1 is left ON or changed to OFF again This depends on the service conditions Type of Action by the switch operation Switch Switch f Function ON OFF No function Effective timing Power failure automatic recovery 2 Auto recovery No auto recovery When power supply ON No function Model select Refer to next page SW7 1 Demana suh OR Setting of demand OFF 0 Operation stop control ON 5095 3 OFF ON 75 Always N Max Hz setting cooling Max Hz cooling x 0 8 Normal Always Max Hz setting heating Max Hz heating x 0 8 Normal Always No function Defrost Hz setting For high humidity Normal Always No function No function Use of existing wires Existing wires Normal When power supply ON No function Function switch Valid Normal Always No function UI NIe Iona O e IN Pump down Normal Under suspension x2 Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is
105. fter the liquid stop valve is closed set the SWP switch on the control board of the outdoor unit to ON The compressor outdoor unit and fan indoor and outdoor units start operating and refrigerant recovering operation begins LED1 and LED2 on the control board of the outdoor unit are lit Set the SWP switch push button type to ON in order to perform refrigerant recovering operation only when the unit is stopped However refrigerant recovering operation cannot be performed until compressor stops even if the unit is stopped Wait for 3 minutes until compressor stops and set the SWP switch to ON again Because the unit automatically stops in about 2 to 3 minutes after the refrigerant recovering operation LED1 is not lit and LED is lit be sure to quickly close the gas stop valve In case the outdoor unit is stopped when LED1 is lit and LED2 is not lit open the liquid stop valve completely and then repeat step 3 minutes later f the refrigerant recovering operation has been completed normally is not lit and LED is lit the unit will remain stopped until the power supply is turned off Turn off the power supply circuit breaker A Warning When pumping down the refrigerant stop the compressor before disconnecting the refrigerant pipes The compres sor may burst if air etc get into it 10 2 Start and finish of test run Operation from the indoor unit Execute the test run using the installation manual for the
106. ge 300 750 65 300 750 When it is 100V or more hundreds digit tens digit and ones digit are displayed by turns SW2 setting Display detail Explanation for display Capacity save 0 225 When air conditioner is connected to M NET and capacity save mode is demanded 0 100 is displayed When there is no setting of capacity save 1007 is displayed 0 225 When the capacity is 10096 hundreds digit tens digit and ones digit are displayed by turns Example When 10096 0 5 secs 0 5secs 2 secs 11 gt 00 gt Error postponement code history 2 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error postponement code history 3 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error code history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns Code display Error thermistor display When there is no error thermistor is displayed 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor out
107. h to function setting mode For modes 15 and higher Press amp and at the same time press and at the same time with the remote controller stopped 3 Specify refrigerant address 00 outdoor unit Specify unit No 00 indoor unit Use and Specified indoor unit FAN operation Enter the setting Press Change refrigerant amp Select mode No 02 address or unit No room temperature detection position O Select setting No 03 remote controller fixed Use and Example Selecting room temperature detection position Enter the setting Press End function display gt lt Press and at the same time The above procedure must be carried out only if changes are necessary 72 Operating Procedure O Check the setting items provided by function selection If settings for a mode are changed by function selection the functions of that mode will be changed accordingly Check all the current settings according to steps to fill in the Check column in Table 1 and then change them as necessary For factory settings refer to the indoor unit s installation manual Switch off the remote controller lt Set the outdoor unit s refrigerant address Hold down the FILTER __ mode is 15 to 28 and TEST Press the CLOCK buttons CV and CA to select the desired buttons simultaneously for atleast 2 seconds FUNCTION will start t
108. he O ON OFF button 2 Self diagnosis will be cancelled and the indoor unit will stop 11 3 3 Remote Controller Diagnosis If the air conditioner cannot be operated from the remote controller diagnose the remote controller as explained below If the correct voltage DC12 V is not supplied to the remote controller the SELF indicator will not light O First check that the power on indicator is lit If this occurs check the remote controller s wiring and the indoor unit e Power on indicator Switch to the remote controller self diagnosis mode Press the FILTER button to start self diagnosis Press the CHECK button for 5 seconds or more The display content will change as shown below When the remote controller malfunctions Error display 1 blinks The remote controller s transmitting receiv ing circuit is defective EL xs Remote controller self diagnosis result When the remote controller is functioning correctly SELF 2 SELF pr r G amp L e KL e Check for other possible causes as there is no problem with the remote controller The remote controller must be replaced with a new one Where the remote controller is not defective but cannot be operated Error display 2 6833 or 6832 blinks Transmission is not possible Error display 3 ERC and
109. he automatic mode 13 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 13 1 HOW TO MONITOR THE OPERATION DATA Turning on the Monitoring the operation data MITSUBISHI ELECTRIC example Request code 004 Discharge temperature 69 amp 9 Refrigerant address 00 0 en 5 11944 10 388 OMENU OON OFF N FILTER gt gt c Em ime er or 0 Maintenance mode aap PAR 21MAA z 7 GN Data display area 4 2 6 D Request code display area 1 Press the TEST button for 3 seconds so that Maintenance mode appears on the screen at 2 Press the CHECK button for 3 seconds to switch to Maintenance monitor Note It is not possible to switch to Maintenance monitor during data request in maintenance mode i e while is blinking since no buttons are operative Operating the service inspection monitor appears on the screen at when Maintenance monitor is activated The display at O now allows you to set a request code No 3 Press the TEMP buttons and to select the desired refrigerant address Screen amp BD lt gt l lt 15 4 Press the CLOCK buttons C v and CA to set the desired request code No 5 Press the FILTER button to perform d
110. hen the valve is locked sound can be heard No sound is heard when the pulse number moves from amp to in case coil is burnt out or motor is locked by open phase Valve position capacity handle while putting the screw driver to the linear expansion valve Opening a valve 1 1 1 1 1 1 1 1 i 1 Close Open Sound can be detecied placing against the screw driver 1 1 1 1 all the way 1 1 Pulse number Extra tightening about 32 pulse 50 3 How to attach and detach the coil of linear expansion valve Composition Linear expansion valve is separable into the main body and the coil as shown in the diagram below Stopper Main body Coil Lead wire How to detach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and detach the coil by pulling it upward Be sure to detach the coil holding main body firmly Otherwise pipes can bend due to pressure How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly attached to main body coil may be detached from the main body and that can cause defecti
111. higher or indoor intake air temperature is 25 C or lower If the air conditioner is operated at a temperature range other than the ones above but operation is not stabilized after 30 minutes or more have elapsed carry out inspection In heat mode the operation state may vary due to frost forming on the outdoor heat exchanger Cool mode Heat mode 8 5 InspecionC i a 0 gw Inspection C 5 Filter inspection Ij s 9 8g 5 30 59 30 5 gt Fii F Bee 582 5820 55 aoai OG 915 Inspection B 9 g 15 E a 1 Su 510 EE 55 S oo Bs BE 5 z o 10 20 40 50 60 70 20 30 40 50 60 70 C Discharge temperature Indoor heat exchanger temperature amp Discharge temperature Outdoor heat exchanger temperature 15 DISASSEMBLY PROCEDURE PUHZ P200YHA PUHZ P250YHA PUHZ P200YHA3R1 PUHZ P250YHASR1 PUHZ P200YHA3R3 PUHZ P250YHA3R3 PUHZ P200YHA3 PUHZ P200YHA3R2 PUHZ P250YHA3 PUHZ P250YHA3R2 OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service panel 2 Remove screws 3 for front 3 for rear 5 x 12 of the top panel and remove it Figure 1 Top panel fixing screws Top panel 24 4 Servic
112. ibuted in Nov 2009 No OCH424 REVISED EDITION B PDF 7 Distributed in Feb 2009 No OCH424 REVISED EDITION A PDF 7 Distributed in Sep 2007 No OCH424 PDF 8 Made in Japan New publication effective Nov 2010 Specifications subject to change without notice
113. if you set ON OFF timer The air conditioner stops operating at the time designated if OFF timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive 45 There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Phone Calls From Customers How to Respond A white mist is expelled from the indoor unit This is not a malfunction This may occur when the operation gets started in the room of high humidity Water or moisture is expelled from the outdoor unit Cooling when pipes or piping joints are cooled they get sweated and water drips down Heating water drips down from the heat exchanger Make use of optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once The display of wireless remote controller gets dim or does not come on The indoor unit does not receive a signal from remote controller at a long distance Batteries are being exhausted Replace them and press the reset button of remote controller 46 11 6 HOW TO CHECK THE PARTS PUHZ P200YHA PUHZ P250YHA PUHZ P200YHA3 PUHZ P250YHA3 PUHZ P200YHA3R1 PUHZ P250YHA3R1 PUHZ P200YHA3R2 PUHZ P250YHA3R2 PUHZ P200YHA3R3 PUHZ P250YHA3R3
114. in case of test run mode Disconnection of compressor wiring Defective circuit of current sensor on outdoor power circuit board O Correct the wiring U V W phase to compressor Refer to 11 9 Outdoor power circuit board Replace outdoor power circuit board Low pressure Abnormal if the following conditions are detected for continuously 1 3 minutes after compressor starts heating operation for 5 minutes 1 Heating mode Detection model TH7 TH3S4 C and TH5 Indoor room temperatureS2 C Detection mode2 TH7 TH3S2 C and TH5 Indoor room temperatureS4 C and TH2 Indoor room temperature 4C 2 Cooling mode TH6 TH7S2 C and TH3 TH7S2 C and Indoor room temperature Indoor liquid pipe temperature TH2 S5 C Thermistor TH3 Outdoor liquid pipe temperature TH5 Indoor cond eva temperature TH6 Outdoor 2 phase pipe temperature TH7 Outdoor temperature O Stop valve of outdoor unit is closed during operation Leakage or shortage of refrigerant G Malfunction of linear expansion valve Clogging with foreign objects in refrigerant circuit Clogging occurs in the parts which become below freez ing point when water enters in refrigerant circuit 31 O Check stop valve Check intake superheat Check leakage of refrigerant Check additional refrigerant Check linear expansion valve Refer to 11 6 After recovering refrigerant remove water from entire refrigerant circuit under vacuum
115. indoor unit Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit test run can be started and finished and its operation mode cooling heating can be set up O Set the operation mode cooling heating using SW4 2 lt SW4 gt Turn on SW4 1 to start test run with the operation mode set by SW4 2 off SW4 1 to finish the test run ON There may be a faint knocking sound around the machine room after power is supplied but this is OFF HE no problem with product because the linear expansion valve is just moving to adjust opening pulse 12 There may be knocking sound around the machine room for several seconds after compressor starts operating But this is not a problem with product because the check valve itself generates the Stop Operation sound due to small pressure difference in the refrigerant circuit Cooling O Heating Note The operation mode cannot be changed SW4 2 during test run To change test run mode stop the unit by SW4 1 change the operation mode and restart the test run by SW4 1 19 11 TROUBLESHOOTING 11 1 TROUBLESHOOTING lt Error code display by self diagnosis and actions to be taken for service summary gt Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit Actions to be taken for service which depends on whether or not the tro
116. ing frequency can be fixed to stabilize operation of inverter model If the air conditioner is currently stopped start it by this operation 2 Press the MODE button to select the desired operation mode Stable cooling Stable heating Stable operation Display operation gt operation gt cancellation COOL HEAT STABLE MODE STABLE MODE STABLE MODE CANCEL 3 Press the FILTER a button to confirm the setting iti ili agp Display Waiting for stabilization Stabilized aae After 10 to 20 minutes 87 6 Data measurement When the operation is stabilized measure operation data as explained below 4 Press the TEMP buttons to select the desired refrigerant address 5 Select the type of data to be displayed After selecting go to step 6 Compressor information MENU button Cumulative 2 ON OFF Number gt 0 Operating current Display operation time x10 HOUR MEM COMP ON x10 HOURS x100 TIMES CURRENT A Outdoor unit information ON OFF button Heat exchanger 6 discharge X Outdoor ambient Display temperature temperature temperature OUTDOOR UNIT OUTDOOR UNIT OUTDOOR UNIT TEMP OUTLET TEMP OUTDOOR TEMP Indoor unit information button Indoor room Heat exchanger Filter operatin gt perang temperature temperature tim
117. ings In case of multiple grouping system M NET and refrigerant address settings should be done as explained in the above sec tion Set the lowest number in the group for the outdoor unit whose refrigerant address is 00 as its M NET address Group A r 1 System controller Power supply unit for transmission wire A control remote controller Group B I Y Refrigerant address 00 address 02 Refrigerant address 01 M NET address 03 I A control remote controller Group C Refrigerant address address A control Refrigerant System address 00 controller ES M NET Power address 01 supply unit for transmission wire A control remote controller Refrigerant address 01 M NET address 02 remote controller Refrigera address 81 00 04 Refrigerant address 02 address 05 IC 3 A control remote In group B M NET address of the outdoor unit whose refrigerant address is 00 is not set to the minimum in the group As 3 is right for this situation the setting is wrong Taking group A as a good sample set the minimum M NET address in the group for the outdoor unit whose refrigerant address is 00 17 10 REFRIGERANT SYSTEM DIAGRAM PUHZ P200YHA PUHZ P250YHA PUHZ P200YHA3 PUHZ P250YHA3 PUHZ P200YHA3R1 PUHZ P250YHA3R1 PUHZ P200YHA3R2 PUHZ P250YHA3R2 Refrigerant flow in cooling R
118. ire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Excessive number of indoor units are connected to 1 out door unit 5 units or more Defective transmitting receiving circuit of outdoor controller circuit board O Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Miswiring of indoor outdoor unit connecting wire converse wiring or dis connection Outdoor controller circuit board can automatically set the unit number of indoor units Abnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring converse wiring or disconnection of indoor outdoor unit con necting wire O Contact failure or miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Defective transmitting receiving circuit of outdoor controller circuit board O Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Start up time over The unit cannot
119. irections Not supported Optional high efficiency Supported No vanes Vane No 3 setting PLA only Vane No 1 setting Vane No 2 setting Optional humidifier Not supported PLA only Supported Vane differential setting No 1 setting TH5 24 28C in heating mode No 2 setting Standard 5 28 32 cold wind prevention Swing No 3 setting TH5 32 38 Not available Swing Available Wave air flow Fan speed during the Extra low heating thermo OFF Stop Set fan speed Fan speed during the Set fan speed cooling thermo OFF Stop Detection of abnormality of Available the pipe temperature P8 x1 PKA HAL KAL 2 Mode No 11 Settings Not available deg up N N PLA BA PCA GA 2 KA Vane No 3 setting No Vanes Less smudging Downward position than the standard No vane function Vane No 1 setting Standard Standard Vane No 2 setting Less draft Be careful of the smudge on ceiling PEAD RP JA L Function Settings Setting No Upward position than the standard Initial setting Factory setting Less draft Upward position than the standard External static pressure Filter sign 100h 35Pa Mode No 08 Setting No Mode 10 2 1 Initial setting Factory setting 2500h
120. it 0403 error will appear on the central control remote controller x Bad example Multi spot earthing of shield wire Central Power remote supply M NET type M NET type M NET type controller appliance outdoor unit outdoor unit outdoor unit jte M NET transmission wire O Good example 1 Single spot earthing of shield wire Central Power remote supply M NET type M NET type M NET type controller appliance outdoor unit outdoor unit outdoor unit grr AR M NET transmission wire O Good example 2 Single spot earthing of shield wire Central Power M NET type type M NET type remote a M outdoor unit outdoor unit outdoor unit AN M NET transmission wire If there are more than 2 earthing spots on the shield wire noise may enter into the shield wire because the earth wire and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots In case of single spot earthing noise does not enter into the shield wire because the earth wire and shield wire do not form 1 circuit To avoid communication errors caused by noise make sure to observe the single spot earthing method described in the installation manual 16 e M NET wiring 1 Use 2 core x 1 25mm shield wire for electric wires Excluding
121. it is used change the indoor unit electrical box wiring referring to the figure in the right and the DIP switch settings of the outdoor unit control board Electric heater For models with There are 3 types of labels Labels A B and C Affix the appropriate labels to the units according to the wiring method Indoor unit model Connectors connections when shipped rom the factory are for indoor unit power supplied from outdoor unit Hoane CND ama Indoor unit Indoor unit specifications heater Indoor power supply terminal kit option Required T i i N Indoor unit electrical box connector con Required Dar nection change Label affixed near each wiring diagram Required 2 for the indoor and outdoor units unit DIP switch settings when using separate indoor unit outdoor unit ON 3 Indoor unit power supplied power supplies only OFF 1 2 SW8 when shipped from factory Set the SW8 3 to ON RP35 140 control board rom outdoor unit Indoor unit power supply IN single 50 Hz 230 V Indoor unit input capacity Main switch Breaker 16A Indoor unit power supply 2x Min 1 5 Indoor unit power supply earth 1xMin 1 5 Indoor unit Outdoor unit 2x Min 0 3 2 E Indoor unit Outdoor unit earth o o x R
122. ity cannot be fully obtained Linear expansion valve fault Opening cannot be adjusted well due to linear expan sion valve fault GhRefrigerant shortage Lack of insulation for refrigerant piping Filter clogging Heat exchanger clogging Air duct short cycle Bypass circuit of outdoor unit fault Q Discharging temperature and indoor heat exchanger temperature does not rise Inspect the failure by checking discharg ing pressure lt Replace linear expansion valve e If refrigerant leaks discharging tempera ture rises and LEV opening increases Inspect leakage by checking the tem perature and opening Check pipe connections for gas leakage Check the insulation Open intake grille and check the filter Clean the filter by removing dirt or dust on it If the filter is clogged indoor pipe tem perature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pres sure Clean the heat exchanger Remove the blockage Check refrigerant system during operation 8 3 minutes after temperature adjuster turns off the compressor will not start operating even if temperature adjuster is turned on GFor minutes after temperature adjuster turns on the compressor will not stop operating even if temperature adjuster is turned off Compressor stops operating immediately when turning off by the remote controller Normal operation For pro
123. ive NO ACK signal 1 Transmitting side controller detects abnormality if a message was transmit ted but there is no reply ACK that a message was received Transmitting side detects abnormality every 30 sec onds 6 times continuously Note The address and attribute displayed at remote controller indicate the con troller that did not reply ACK Common factor that has no rela tion with abnormality source The unit of former address does not exist as address Switch has changed while the unit was energized Q Extinction of transmission wire voltage and signal is caused by over range transmission wire Maximum distance 200m Remote controller line 12m Extinction of transmission wire voltage and signal is caused by type unmatched transmission wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS VVR VVF VCT Diameter 1 25mm or more Extinction of transmission wire voltage and signal is caused by over numbered units Accidental malfunction of abnormality detected controller noise thunder surge Defective of abnormality gen erated controller 2 displayed address or attribute is out door unit indoor unit detects abnormality when indoor unit transmits signal to out door unit and there was no reply ACK O Contact failure of transmission wire of outdoor unit or indoor unit Disconnection of transmission connector CN2M of outdoor unit
124. ive for 10 minutes of compressor starting process and for 10 minutes after and during defrosting O Disconnection or contact failure of connector 4 on the outdoor controller circuit board Defective thermistor Q Defective outdoor controller circuit board 29 Check connection of connector TH4 on the outdoor controller circuit board Check breaking of the lead wire for thermistor TH4 Refer to 11 9 Check resistance value of thermistor 4 temperature by microprocessor Thermistor TH4 Refer to 11 6 SW2 on A Control Service Tool Refer to 11 10 9 Replace outdoor controller board Error Code Abnormal point and detection method Case Judgment and action U4 TH3 5105 TH6 5107 TH7 5106 TH8 5110 Open short of outdoor unit thermistors TH3 TH6 TH7 and TH8 Abnormal if open or short is detected during compressor operation Open detection of thermistors TH3 and TH6 are inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting Check which unit has abnormality in its thermistor by switching the mode of SW2 PAC SK52ST Refer to 11 10 Heatsink thermistor TH8 is in the power module Thermistors Disconnection or contact failure of connectors Outdoor controller circuit board TH3 TH7 6 Defective thermistor 9 Defective outdoor controller circuit board Defective outdoor power
125. l in troubleshooting mode then press the HOUR button min MINUTE button en Finished gt NO YES End function selection mode Note When you switch to function selection mode End troubleshooting mode on the wireless remote controller s operation area the unit ends function selection mode automatically if nothing is input for 10 minutes or longer Operating instructions Check the function settings Press the button twice continuously gt is lit and 00 blinks Press the temp 0 button once to set 50 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Set the unit number Press the temp 0 button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the button By setting unit number with the button specified indoor unit starts performing fan operation Detect which unit is assigned to which number using this function If unit number is set to AL all the indoor units in same refrigerant system start performing fan operation simultaneously unit number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the unit number setting If the signal was not received by the sensor you will not hear a beep or a double ping sound may be he
126. le error is being postponed PINI 3 When the display blinks Inspection code is displayed when compressor stops due to the work of protection devices Contents to be inspected During operation Abnormal high pressure 63H operated Abnormal high discharging temperature shortage of refrigerant Open short circuit of discharge thermistor TH4 Open short of outdoor unit thermistors TH3 TH6 TH7 and TH8 Abnormal temperature of heatsink Abnormality of power module Abnormality in outdoor fan motor Abnormality of voltage Outdoor unit Overheat protection Compressor overcurrent interruption When Comp locked Current sensor error Indoor unit 2 Abnormal low pressure Indoor unit 3 Compressor overcurrent interruption Abnormality of indoor units Indoor unit 4 Communication error of M NET system Inspection unit Indoor unit 1 Contents to be inspected When power is turned on 63H connector yellow is open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive number of indoor units 4 units or more Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Startup time over Communication error except for outdoor unit
127. lectrical wiring diagram of indoor unit for how to set the indoor unit During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the indoor unit Do not perform emergency cooling operation for more than 10 hours Neglecting this could result in freezing the heat exchanger in indoor unit 3 Emergency operation procedure O Turn the main power supply off Turn on the emergency operation switch SWE on indoor controller board Set the shorting pins of emergency operation connector CN31 on outdoor controller board to ON amp Use SW4 2 on outdoor controller board to set the operation mode cooling or heating SW4 1 is not used SW4 CN31 Shorting pins ON Heating ON E 1 2 Cooling Turning the main power supply on will start the emergency operation 4 Releasing emergency operation O the main power supply off SWA Set the emergency operation switch SWE on indoor controller board to OFF ON Heating Set the shorting pins of emergency operation connector CN31 on outdoor controller board to OFF Set SW4 2 on outdoor controller board as shown in the right 1 2 C
128. ly on plural units connection x1 Error code displayed on remote controller X2 Refer to service manual for indoor unit 60 Outdoor unit operation monitor function gt When optional part A Control Service Tool PAC SK52ST is connected to outdoor controller board CNM Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on A Control Service Tool Operation indicator SW2 Indicator change of self diagnosis SW2 setting Display detail Explanation for display ON 123456 Digital indicator LED1 working details gt Be sure that 1 to 6 in the SW2 are set to OFF 1 Display when the power supply ON 1 second When the power supply ON blinking displays by turns interval Wait for 4 minutes at the longest 2 When the display lights Normal operation Operation mode display Lighting LED1 GE mE Initial setting ie The tens digit Operation mode gt The ones digit Relay output Display 4 valve Solenoid valve Display Operation Model OFF FAN COOLING DRY HEATING DEFROSTING Display during error postponement Postponement code is displayed when compressor stops due to the work of protection device Postponement code is displayed whi
129. match the setting of the remote controller during DRY operation No air comes out sometimes during DRY operation This is not a malfunction During the DRY operation the blower s ON OFF is controlled by the microprocessor to prevent overcooling and to ensure efficient dehumidification The fan speed cannot be set by the remote controller during DRY operation Q The fan speed does not match the setting of the remote controller in HEAT operation This is not a malfunction 1 When the HEAT operation starts to prevent the unit from blowing cold air the fan speed is gradually increased from zero to the set speed in proportion to the temperature rise of the discharged air 2 When the room temperature reaches the set temperature and the outdoor unit stops the unit starts the LOW AIR operation 3 During the HEAT operation the DEFROST operation is performed to defrost the outdoor unit During the DEFROST operation the blower is stopped to prevent cold air coming out of the indoor unit 44 The up down vane will be automatically set to horizontal blow in these cases listed up on the left G After a while the up down vane will be automatically moved according to the setting of the remote controller Phone Calls From Customers How to Respond Note Air blows out for while after HEAT operation is stopped Something is wrong with the blower This is not a malfunc
130. mation The tens digit Total display for applied setting Setting details Display details H P Cooling only 0 1 Cooling only Single phase 3 phase O Single phase 2 3 phase The ones digit Setting details Display details Defrosting switch 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed Code display Indoor pipe temperature Liquid TH2 1 Indoor 1 89 88 39 88 When the temperature is 0C or less temperature are displayed by turns Indoor pipe temperature Cond Eva TH5 1 Indoor 1 39 88 39 88 When the temperature is OC or less temperature are displayed by turns Indoor pipe temperature Liquid TH2 2 Indoor 2 39 88 39 88 When the temperature is OC or less temperature are displayed by turns Indoor pipe temperature Cond Eva TH5 2 Indoor 2 39 88 39 88 When the temperature is OC or less temperature are displayed by turns Indoor room temperature TH1 8 39 SW2 setting Display detail Explanation for display ON Indoor setting temperature 17 30 Outdoor pipe temperature Cond Eva TH6 39 88 39 88 When the temperature is or less and temperature are displayed by turns
131. may be heard Reenter the setting number Repeat steps and O to make an additional setting without changing unit number Repeat steps to to change unit number and make function settings on it Complete the function settings Press button Do not use the wireless remote controller for 30 seconds after completing the function setting 74 12 2 FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode Change the setting when needed Item 1 Item 2 Item 3 Setting content 1 Change language CHANGE LANGUAGE Language setting to display Display in multiple languages is possible 2 Function limit FUNCTION SELECTION Operation function limit setting operation lock LOCKING FUNCTION Setting the range of operation limit operation lock Setting the use or non use of automatic operation mode Temperature range limit setting LIMIT TEMP FUNCTION Setting the temperature adjustable range maximum minimum 3 Mode selection MODE SELECTION 1 2 Use of automatic mode setting SELECT AUTO 3 1 Remote controller main sub setting CONTROLLER MAIN SUB Selecting main or sub remote controller When two remote controllers are connected to one group one controller must be set to sub GS Use of clock setting CLOCK Set
132. mission data collide each other Defective transmitting receiving circuit of transmission processor 9 Transmission data is changed by the noise on transmission O If the works of transmission wire is done with the power on turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again Check transmission waveform or noise on transmission wire BUS BUSY 1 Overtime error by signal collision damage Abnormal if transmitting signal is not possible for 8 10 minutes continuously because of collision of transmission 2 Data could not reach transmission wire for 8 10 minutes continuously because of noise or etc Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmis sion wire continuously Transmission quantity has increased and transmission of signal is not possible because there was wiring mistake of ter minal block for transmission wire TB3 and terminal block for cen tral control TB7 in outdoor unit 9 Transmission are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect trans mission of control and central control system of outdoor unit th
133. more than 1 hour Error Code Abnormal point and detection method Case Judgment and action overcurrent interruption Abnormal if overcurreni DC bus or com pressor is detected after compressor starts operating for 30 seconds Q Stop valve of outdoor unit is closed Decrease of power supply volt age Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units Defective input circuit of out door controller board Defective compressor Defective outdoor power circuit board Dip switch setting difference of outdoor controller circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 11 9 Outdoor power circuit board Check indoor outdoor fan Solve short cycle amp Replace outdoor controller circuit board x Before the replacement of the outdoor controller circuit board disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases U V W during test run No defect on board if voltage among phases U V V W and W U is same Make sure to perform the voltage check with same performing frequency Check compressor Refer to 11 6 Replace outdoor power circuit board 9 Check the dip switch setting of outdoor con troller circuit board
134. ng all addresses are set to 0 9 4 2 Refrigerant address setting Setting example 50 X et COW M NET Address No 1 2 SW11 ones QS EG Switch digit 58 setting sw12 aS 75 tone eed es 32 VS ap In case of multiple grouping system multiple refrigerant circuits in one group indoor units should be connected by remote controller wiring TB5 and the refrigerant address needs to be set Leave the refrigerant addresses to 00 if the group set ting is not conducted Set the refrigerant address by using DIP SW1 3 to 6 on the outdoor controller board Initial setting all switches are OFF All refrigerant addresses 00 o naanug e namaau nagman onmw mon noma oca mu ore a fr fore a fore me fore mumumrm o mmrimrim mm OCC T23456 T23456 T23456 T23456 T23456 T23456 T23456 T23456 Refrigerant gt 0 1 2 3 4 5 6 7 address o nnanus e namanm nac onm mcm nom om n m m omm m m MC M for sooso erssssoo rjssosoo nnn 123456 123456 123456 123456 123456 123456 123456 123456 8 9 10 11 12 13 14 15 9 4 3 Regulations in address sett
135. ng wire nnecting wire converse wiring or dl sconnection or power supply Re check error by turning off power and on again Contents Inspection method Startup time over 2 blinking Indoor outdoor unit communication error Check if indoor outdoor connecting wire is connected correctly signal receiving error is detected by in f door unit Check if noise entered into indoor outdoor connecting wire or Indoor outdoor unit communication error power supply transmitting error is detected by indoor Check if noise entered into indoor outdoor controller board Indoor outdoor unit communication error Re check error by turning off power and on again signal receiving error is detected by outdoor unit Indoor outdoor unit communication error transmitting error is detected by outdoor unit 3 blinking Remote controller signal receiving Check if connecting wire of indoor unit or remote controller error is detected by remote controller is connected correctly Remote controller transmitting error Check if noise entered into transmission wire of remote is detected by remote controller controller GRe check error by turning off power and on again Remote controller signal receiving error is detected by indoor unit Remote controller transmitting error is detected by indoor unit 4 blinking Error code is not defined OCheck if remote controller is MA remot
136. o flash refrigerant address The refrigerant address changes from 00 to 15 This operation is not possible for single refrigerant systems and then the remote controller s display content will change as shown below KA aba AN Refrigerant address display section nr 11 7 SELECTION gt If the unit stops after SUETON flashed for 2 seconds or 88 flashes in the room temperature display area for 2 seconds a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path Note If you have made operational mistakes during this procedure exit function selection see step OM and then restart from step Set the indoor unit number Press the CLOCK buttons and CA to select the unit number Pressthe ON OFF button so that flashes in the unit number display of the indoor unit for which you want to perform function selection The unit area number changes to 00 01 02 03 04 and AL each time a button 15 pressed Unit number PUMETIOM SELEL I ION n N 4 n 5 0000 display section In gt IN e To set modes 01 to 06 or 15 to 22 select unit number 00 set modes 07 to 14 or 23 to 28 carry out as follows To set each indoor unit individually select 01 to 04
137. of replace wash operation BAER dr 90 unit Microprocessor version information Examples 5 01 0501 Auxiliary information displayed after 91 Outdoor unit Microprocessor version information sub No version information Examples Ver 5 01 A000 A000 92 93 94 95 96 97 98 99 Displays postponement code is 100 Outdoor unit Error postponement history 1 latest Code displayed if postponement code is present Displays postponement code is 101 Outdoor unit Error postponement history 2 previous Code displayed if no postponement code is present Y 2 Displays postponement code is 102 Outdoor unit Error postponement history 3 last but one Code displayed if no postponement code is present 79 Description Request content 3 Unit Remarks Display range Request code 103 Error history 1 latest Displays error history isdisplayedif no history is present Code 104 Error history 2 second to last Displays error history isdisplayedif no history is present Code 105 Error history 3 third to last Displays error history isdisplayedif no history is present Code 3 TH3 Abnormal thermistor display 106 TH3 TH6 TH7 TH8 7 TH7 Sensor 8 number 0 No thermistor error
138. on Refrigerant recovery equipment Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series Although the refrigerant piping work for R410A is same as for R22 exclusive tools are necessary so as not to mix with different kind of refrigerant Furthermore as the working pressure of R410A is 1 6 times higher than that of R22 their sizes of flared sections and flare nuts are different Thickness of pipes Because the working pressure of R410A is higher compared to R22 be sure to use refrigerant piping with thickness shown below Never use pipes of 0 7 mm or below Diagram below Piping diameter and thickness Thickness mm Nominal dimensions inch diameter mm Outside 1 4 6 35 3 8 9 52 1 2 12 70 5 8 15 88 3 4 19 05 Dimensions of flare cutting and flare nut The component molecules in HFC refrigerant are smaller compared to conventional refrigerants In addition to that R410A is a refrigerant which has higher risk of leakage because its working pressure is higher than that of other refriger ants Therefore to enhance airtightness and intensity flare cutting dimension of copper pipe for R410A has been speci fied separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below Set copper pipe correctly re
139. on sound 3 to 4 dB lower than that of usual Adding a commercial timer or on off switch contactor setting to the CNDM connector which is optional contacior for demand input located on the outdoor controller board enables to control compressor operation frequency The performance depends on the load of conditioned outdoor temperature lt Low level sound priority mode circuit ea Er securely as Adapter for external DE signal input Outdoor unit Procured locally PAC SC36NA controller board I Relay supply LO Swi CNDM SWI Switch m X Relay Contact spec DC1mA Max 10 m including local wiring 1 Make the circuit as shown above with adapter for external signal input PAC SC36NA 2 Turn SW1 to on for Low level sound priority mode Turn SW1 to off to release Low level sound priority mode and normal operation b On demand control Local wiring Demand control is available by external input In this mode power consumption is decreased within the range of usual 0 100926 Basically the wiring is same with a Connect an SW 1 which is procured locally between Orange and Red 1 and 3 of the adapter for external signal input PAC SC36NA and insulate the tip of the brown lead wire It is possible to set it to the following power consumption compared with ratings by setting the SW7 1 2 SW7 1 SW7 2 iu ad OFF OFF 0 Operation stop ON OFF 50 OFF ON 75 58
140. ooling x If shorting pins are not set on emergency operation connector CN31 the setting remains OFF 52 5 Operation data during operation During emergency operation no communication is performed with the indoor unit so the data items needed for operation are set to the following values Operation mode Operation data Remarks COOL HEAT Room temperature TH1 27C 20 5C Indoor pipe temperature TH2 5C 45C Indoor 2 phase pipe temperature TH5 5C 50C Set temperature 25C 22 C Outdoor pipe temperature TH3 45 C 5C Outdoor discharge pipe temperature TH4 80 C 80 C Outdoor 2 phase pipe temperature TH6 50 C 5C Outdoor air temperature TH7 35 C 7C Temperature difference code room temperature set temperature Tj 5 5 Discharge superheat SHd 30deg Sub cool SC 5deg X1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data If the unit enters emergency operation because TH values have become mismatched setting the thermistors to open short corrects the settings X2 If one thermistor is set to open short the values for each will be different Example When liquid temperature thermistor TH3 has an open or short circuit Thermistor TH3 5C Ta Tb TH6 Regard normal figure as effective data Tc Td Regard normal figure as effective d
141. oor 2 A Control Service Tool SW2 setting Check converse connection of extension pipe or converse wiring of indoor outdoor unit connecting wire indicates M NET board in outdoor unit Judgment and action Address duplicate definition This error is displayed when transmission from the units of same address is detected Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality There are 2 or more same address of controller of out door unit indoor unit FRESH MASTER or LOSSNAY Noise has entered into trans mission signal and signal was transformed Search the unit with same address as abnormality occurred If the same address is found turn the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more after the address is cor rected and turn the power on again Check transmission waveform or noise on trans mission wire Hardware error of transmission processor Transmission processor intended to trans mit 0 but 1 appeared on transmission wire Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality D Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit indoor unit FRESH MASTER or LOSSNAY are done or polarity is changed with the power on and trans
142. or between indoor and outdoor units service manual 8 P8 Pipe temperature error 9 E4 E5 Remote controller signal receiving error 10 11 12 Fb Indoor unit control system error memory error etc EO Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote controller Wired remote controller Beeper sounds OPERATION Symptom Remark INDIGATOR lamp blinks Check code Number of times 1 E9 Indoor outdoor unit communication error Transmitting error Outdoor unit 2 UP Compressor overcurrent interruption 3 03 04 Open short of outdoor unit thermistors 4 UF Compressor overcurrent interruption When compressor locked 5 U2 Abnormal high discharging temperature insufficient refrigerant For details check 6 U1 Ud Abnormal high pressure 63H operated Overheating the LED display protection operation of the outdoor 7 U5 Abnormal temperature of heatsink controller board 8 U8 Outdoor unit fan protection stop 9 U6 Compressor overcurrent interruption Abnormality of power module 10 U7 Abnormality of superheat due to low discharge temperature 11 U9 UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Current sensor error 12 13 14 Others Other errors Refer to the technical manual for the
143. or out door unit connecting wire Defective communication circuit of outdoor controller circuit board 9 Defective communication circuit of indoor controller board Noise has entered into indoor outdoor unit connecting wire O Check disconnection or looseness of indoor outdoor unit connecting wire of indoor or out door units Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormal ity is displayed again Indoor outdoor unit communication error Transmitting error Outdoor unit 1 Abnormal if 0 receiving is detected 30 times continuously though outdoor con troller circuit board has transmitted 1 2 Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes O Indoor outdoor unit connecting wire has contact failure Defective communication circuit of outdoor controller circuit board 9 Noise has entered power supply Noise has entered indoor out door unit connecting wire Check disconnection or looseness of indoor outdoor unit connecting wire Turn the power off and on again to check Replace outdoor controller circuit board if abnormality is displayed again Non defined error code This code is displayed when non defined error code is received O Noise has entered transmission wire of remote controller Noise has entered indoor out door unit connecting wire
144. outdoor unit 1 If the beeper does not sound again after the initial 2 beeps to confirm the self check start signal was received and the OPERATION INDICATOR lamp does not come on there are no error records 2 If the beeper sounds 3 times continuously beep beep beep 0 4 0 4 0 4 sec after the initial 2 beeps to confirm the self check start signal was received the specified refrigerant address is incorrect 26 11 4 SELF DIAGNOSIS ACTION TABLE Abnormalities detected when the power is turned on Error Code Abnormal point and detection method Case Judgment and action O No voltage is supplied to terminal block TB1 of outdoor unit a Power supply breaker is turned off b Contact failure or disconnec tion of power supply terminal C Open phase L2 or N phase Electric power is not supplied to outdoor controller circuit board a Disconnection of connector CNDC Disconnection of reactor ACL4 4 Disconnection of outdoor noise filter circuit board or parts fail ure in outdoor noise filter circuit board Defective outdoor controller circuit board O Check following items a Power supply breaker b c Connection of power supply terminal block TB1 Check connection of the connector CNDC on the outdoor controller circuit board Check connection of the connector CNDC on the outdoor noise filter circuit board Refer to 11 9 Check connection of reacto
145. ow protection is working E6 Indoor outdoor unit communication error P6 Freezing overheating protection is working No error history Abnormality of pipe temperature No applied unit Abnormality of pipe temperature the rmistor Cond Eva Abnormality of indoor controller boa rd See the table below for details of the LED display LED 1 2 3 on the indoor controller board LED1 microprocessor power supply Lights when power is supplied LED2 remote controller Lights when power is supplied for wired remote controller The indoor unit should be connected to the outdoor unit with address 0 setting LED3 indoor outdoor communication Flashes when indoor and outdoor unit are communicating 21 MITSUBISHI ELECTRIC Fe FETAN O NJ ON OFF I TEMP 9 9 264 FAN 6 0 MODE VANE AUTOSTAR N CHECK LOUVER TEST RUN RESET CLOCK Test run for wireless remote controller Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1 0MQ Turn on the main power to the unit Press the button twice continuously Start this operation from the status of remote cont
146. pply Earth leakage breaker wiring circuit breaker or cable Ne isolating switch unit No 2 Unit power i supply cable Indoor outdoor unit connection Indoor outdoor unit connection Indoor unit LL TG Unit Q H f ower 93 Supply Ja TB4 1 1 Remote D controller 4 2 Tewas J 9 2 SEPARATE INDOOR UNIT OUTDOOR UNIT POWER SUPPLIES Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units Simultaneous twin triple four system lt For models without heater gt The optional indoor power supply terminal kit is required 9 75 m ne Li af OH elas Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units Outdoor unit power supply Earth leakage breaker Wiring circuit breaker or isolating switch Outdoor unit Indoor unit outdoor unit connecting cables Remote controller O Indoor unit i Option Q Indoor unit power supply 9 Indoor unit earth If the indoor and outdoor units have separate power supplies refer to the table below If the optional indoor power supply terminal k
147. r ACL4 a Check connection of outdoor noise filter circuit board b Replace outdoor noise filter circuit board Refer to 11 9 Replace controller board When items above are checked but the units cannot be repaired 63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously after power sup ply 63H High pressure switch O Disconnection or contact failure of 63H connector on outdoor controller circuit board Disconnection or contact failure of 63H 63H is operating due to defec tive parts Defective outdoor controller circuit board 27 Check connection of 63H connector on outdoor controller circuit board Refer to 11 9 Check the 63H side of connecting wire Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board Error Code Abnormal point and detection method Case Judgment and action Indoor outdoor unit connector miswiring excessive number of units 1 Outdoor controller circuit board can automatically check the number of connected indoor units Abnormal if the number cannot be checked automati cally due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes Abnormal if outdoor controller circuit board recognizes excessive number of indoor units O Contact failure or miswiring of indoor outdoor unit connecting w
148. r and filter is not dirty resistance values among terminals on linear expansion valve using a tester 3 blinking Abnormality of outdoor fan motor rotational speed Protection from overheat operation TH3 Check the outdoor fan motor Check if connector TH3 on outdoor controller board is disconnected 4 blinking Compressor overcurrent breaking Start up locked Compressor overcurrent breaking Abnormality of current sensor P B Abnormality of power module Check if stop valves are open GCheck looseness disconnection and converse connection of compressor wiring Measure resistance values among terminals on compressor using a tester Check if outdoor unit has a short cycle on its air duct 5 blinking Open short of discharge thermistor TH4 Open short of outdoor thermistors TH6 and 8 Check if connectors TH3 TH4 TH6 and TH7 on outdoor controller board and connector CN3 on outdoor power board are not disconnected Measure resistance value of outdoor thermistors 6 blinking Abnormality of heatsink temperature Check if indoor outdoor units have a short cycle on their air ducts Measure resistance value of outdoor thermistor TH8 7 blinking Abnormality of voltage Check looseness disconnection and converse connection of compressor wiring Measure resistance value among terminals on compressor using a tester GCheck th
149. r refrigerant system if indoor unit transmits signal to LOSSNAY while outdoor unit power supply of same refriger ant system with LOSSNAY is put off or within 2 minutes of restart abnormality is detect ed Contact failure of transmis sion wire of indoor unit of LOSSNAY Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiv ing circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is non existent The unit of former address does not exist as address Switch has changed while the unit was energized Abnormality is detected when indoor unit transmits signal because the address of FRESH MASTER and LOSSNAY are changed after sequential operation of FRESH MASTER and LOSSNAY by remote controller 36 Same as mentioned in A7 of the previous page Error Code Abnormal point and detection method Case Judgment and action M NET NO RESPONSE Transmitting condition is O Check transmission waveform or noise on Abnormal if a message was transmitted repeated fault because of transmission wire and there were reply ACK that message noise and the like Turn off the power supply of outdoor unit was received but response command Extinction of transmission wire and indoor unit and FRESH MASTER or does not return Transmitting side detects voltage and signal is caused LOSSNAY at the same time for 2 minutes or abnormality every 30 seconds
150. r setting for error situation To switch the setting press the ON OFF button CALL OFF The set contact numbers are not displayed in case of error CALL The set contact numbers are displayed in case of error The contact number can be set when the display is as shown on the left Setting the contact numbers To set the contact numbers follow the following procedures Move the flashing cursor to set numbers Press the H TEMP V and A button to move the cursor to the right left Press the CLOCK V and A button to set the numbers 4 4 Display change setting 1 Temperature display C F setting To switch the setting press the ON OFF button C The temperature unit C is used F The temperature unit F is used 2 Room air temperature display setting To switch the setting press the ON OFF button O ON The room air temperature is displayed Q OFF The room air temperature is not displayed 3 Automatic cooling heating display setting To switch the setting press the ON OFF button ON of Automatic cooling and Automatic heating is displayed under the automatic mode is running OFF Only Automatic is displayed under the automatic mode CALL Function selection flowchart Setting language English Change Language Function selection Mode selection Display mode setting Normal display
151. re not actually printed on the board SC U SC V SC W Connect to the compressor MC Voltage among phases 10V 400V AC TB L1 TB L2 TB L3 Connect to the outdoor noise fil ter circuit board 101 L02 103 3801 4151 AC POWER MODULE TB N1 Connect to the smoothing capacitor TB C1 Connect to the smoothing capacitor CB10 CB2 Connect to the smoothing capacitor 56 11 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS 1 Function of switches Action by the switch operation ON OFF Function Effective timing When compressor is working in heating operation Forced defrost 1 Start Normal Abnormal history clear Clear Normal off or operating ON ON ON ma ilan 1 2 3 ON 123456 1 1 5 6 Refrigerant address setting ON ON ON When power supply ON wa 10 ON EE 14 Test run Operating Under suspension Test run mode setting Heating Cooling 1 Forced defrost should be done as follows Change the DIP SW1 1 on the outdoor controller board from OFF to ON Forced defrost will start by the above operation if these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous forced de
152. roller display turned off and current operation mode are displayed Press 0 button to activate g mode then check whether cool air is blown out from the unit Press the button to activate neat mode then check whether warm air is blown out from the unit Press the button and check whether strong air is blown out from the unit Press the 7 button and check whether the auto vane operates properly Press the ON OFF button to stop the test run Note Point the remote controller towards the indoor unit receiver while following steps to C lt It is not possible to run in FAN DRY or AUTO mode 22 11 3 HOW TO PROCEED SELF DIAGNOSIS 11 3 1 When a Problem Occurs During Operation If aproblem occurs in the air conditioner the indoor and outdoor units will stop andthe problem is shown inthe remote controller display CHECK and the refrigerant address are displayed on the temperature display and the error code and unit number are displayed alternately as shown below i Ifthe outdoor unit is malfunctioning the unit number will be 00 j TEMP Cv o Inthe case of group control for which one remote controller controls ONENG th c multiple refrigerant systems the refrigerant address and
153. side temperature TH7 8 Outdoor heatsink TH8 Code display Operation frequency on error occurring 0 255 0 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125Hz 0 5 secs 0 5secs 2 secs 11 25 gt Fan step on error occurring 0 10 66 SW2 setting Display detail Explanation for display LEV A opening pulse on error occurring 07 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 130 pulse 0 5 secs 0 5secs 2 secs gt 30 Indoor room temperature 1 on error occurring 8 39 Indoor pipe temperature Liquid TH2 39 88 error occurring When the temperature is 0 or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs gt 15 Indoor pipe temperature Cond Eva 39 88 TH5 on error occurring When the temperature is 0 C or less and 39 88 temperature are displayed by turns Example When 15 0 5 secs 0 5secs 2 secs 15 gt Outdoor pipe temperature 2 phase TH6 39 88 on error occurring When the temperature is 0 C
154. so that the inside of pipes are not oxidized 10 Removing the high pressure switch 63H 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Pull out the lead wire of high pressure switch 5 Recover refrigerant 6 Remove the welded part of high pressure switch 92 OPERATING PROCEDURE PHOTOS 11 Removing the compressor 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 8 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Remove the soundproof cover for compressor 10 Remove the terminal cover and remove the compressor lead wire 11 Recover refrigerant 12 Remove the 3 points of the compressor fixing nut using a spanner or a adjustable wrench 13 Remove the welded pipe of compressor inlet and outlet and remove the compres
155. sor Note Recover refrigerant without spreading it in the air Photo 9 Compressor terminal Compressor MC Compressor fixing nut 12 Removing the accumulator 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 accumulator leg fixing screws 4 x 10 Note Recover refrigerant without spreading it in the air Valve bed fixing screw Separator for fixing Screw z Valve bed fixing screws Compressor Soundproof cover Accumulator leg fixing screws Compressor fixing nut 93 94 95 SUM s MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Nov 2010 No OCH424 REVISED EDITION D Distributed in Jan 2010 No OCH424 REVISED EDITION C PDF 5 Distr
156. ss Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant The following tools are necessary to use R410A refrigerant Tools for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Gauge manifold Charge hose Gas leak detector Store the piping to be used indoors during installation and both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging Torque wrench Electronic refrigerant charging scale Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a small amount If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Charge refrigerant from liquid phase of gas cylinder If the refrigerant is charged from gas phase composition change may o
157. t Upper limit of ambient temperature is 46 C Turn off power and on again to check if U5 is displayed within 30 minutes If 04 is displayed instead of U5 follow the action to be taken for U4 Check resistance value of thermistor TH8 or temperature by microprocessor Thermistor TH8 Refer to 11 6 SW2 on A Control Service Tool Refer to 11 10 Replace outdoor power circuit board Replace outdoor controller circuit board Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition O Outdoor stop valve is closed Decrease of power supply voltage 9 Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 11 9 Outdoor power circuit board Check compressor referring to 11 6 Replace outdoor power circuit board Outdoor fan motor Abnormal if rotational frequency of the fan motor is not detected during DC fan motor operation Fan motor rotational frequency is abnormal if 100 rpm or below detected continuously for 15 seconds at 20 C or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute O Failure in the operation of the DC fan motor Q Failure in the outdoor circuit controller
158. t unit is not present 38 Indoor unit Liquid pipe temperature Unit No 2 39 88 1 39 Indoor unit Liquid pipe temperature Unit No 3 39 88 T 40 Indoor unit Liquid pipe temperature Unit 4 39 88 1 41 42 Indoor unit Cond Eva pipe temperature Unit No 1 39 88 0 is displayed if the target unit is not present 43 Indoor unit Cond Eva pipe temperature Unit No 2 39 88 T 44 Indoor unit Cond Eva pipe temperature Unit No 3 39 88 T 45 Indoor unit Cond Eva pipe temperature Unit No 4 39 88 1 46 47 48 Thermo ON operating time 0 999 Minutes 49 Test run elapsed time 0 120 Minutes lt Not possible to activate maintenance mode during the test run 78 8 8 Y Request content Doscnbtion Unit Remarks Display range 50 Indoor unit Control state Refer to 13 2 1 Detail Contents in Request Code 51 unit Control state Refer to 13 2 1 Detail Contents in Request Code 52 Compressor Frequency control state Refer to 13 2 1 Detail Contents in Request Code 53 Outdoor unit Fan control state Refer to 13 2 1 Detail Contentsin Request Code _ 54 Actuator output state Refer to 13 2 1 Detail Contentsin Request Code _
159. tdoor power circuit board Replace outdoor controller circuit board Check disconnection looseness or breaking of connection wire between outdoor control ler circuit board CNMNT and M NET board CN5 Check disconnection looseness or breaking of connection wire between outdoor control ler circuit board CNMNT and M NET board CND Check M NET transmission wiring method Error Code Abnormal point and detection method Case Judgment and action Pipe temperature Cooling mode Detected as abnormal when the pipe tem perature is not in the cooling range 3 min utes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range Indoor pipe temperature TH2 or TH5 room temperature TH1 lt 3T TH Lower temperature between liquid pipe temperature and condenser evaporator temperature Heating mode When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished the unit is detected as abnormal when condenser evaporator pipe temperature is not in heat ing range within 20 minutes Note 3 It takes at least 27 minutes to detect abnormality Note 4 It excludes the period of defrosting Detection restarts when defrosting mode is over Heating range 3 C Condenser
160. tection of compressor 38 Normal operation Symptoms PLEASE WAIT is kept being displayed on the remote controller Diagnosis flow Inspection method and troubleshooting Check the display time of PLEASE WAIT after turning on the main power 6 minutes 2 minutes or more ow long is PLEASE WAIT or less i kept rH displayed on the d ES dd ma i A emote controller playe e start up diagnosis will during the start up be over in around 2 minutes 2106 diagnosis after turning minutes on the main power Are any error codes displayed on the emote controller Check the LED display of the outdoor controller circuit board displ aed onthe LED e Miswiring of indoor e Refer to Self diagnosis 4 outdoor connecting action table in order to wire solve the trouble NO Breaking of indoor outdoor connecting In case of communication wire S3 errors the display of Defective indoor remote controller may not controller board match the LED display of Defective outdoor the outdoor unit controller circuit board Defective indoor controller board Defective remote controller Symptoms Nothing is displayed on the remote controller D Diagnosis LED display of the indoor controller board LED1 o LED2 o LED3 O Inspection method and troubleshooting Check the voltage between S1 and
161. the mode number and setting number and 88 flashes in the room temperature display area a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path To make additional settings in the FUNCTION SELECTION screen repeat the steps through O Note After setting the modes 07 through 14 the modes 23 through 28 cannot be set continuously or vice versa In this case after completing the settings for the modes 07 through 14 or 23 through 28 go to the step 10 to finish setting and restart setting from the step 1 At this point wait for 30 seconds or more before restarting setting Otherwise the temperature may indicate 2 Complete function selection Hold down the FILTER mode is 15 to 28 and TEST buttons Do not operate the remote controller for at least 30 seconds after completing function selection No operations will be accepted even if they made simultaneously for least 2 seconds After a while the function selection screen will disappear and the air condi tioner OFF screen will reappear Note If a function of an indoor unit is changed by function selection after installation is complete make sure that a O mark etc is given in the Check column of Table 1 to indicate the change 73 12 1 2 Selecting functions using the wireless remote controller Type Functions
162. the power supply the system will go into startup mode PLEASE WAIT will blink on the display section of the room temperature and lamp green of the remote controller will flash As to INDOOR BOARD LED LED1 will be lit up LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0 LED3 will blink As to OUTDOOR BOARD LED LED1 green and LED red will be lit up After the startup mode of the system finishes red will be turned off In case OUTDOOR BOARD LED is digital display and will be displayed alternately every second If one of the above operations does not function correctly the causes written below should be considered Find causes from the symptoms The below symptoms are under test run mode Startup in the table means the display status of 1 written above Symptoms in test run mode Remote Controller Display OUTDOOR BOARD LED Display indicates digital display Cause Remote controller displays PLEASE WAIT and cannot be operated After startup is displayed only green lights up lt 00 gt After power is turned on PLEASE WAIT is displayed for 2 minutes during system startup Normal After power is turned on PLEASE WAIT After startup is displayed green once and red once blink alternately F1 Incorrect connection of outdoor terminal block Li L2 Ls and 51 52 53 is displayed for 3 minutes then error
163. ti freeze protection is ON 6 Overheat protection is ON 7 Requesting compressortoturn OFF F There are no corresponding units Frequency control state Display Discharge temperature Condensation temperature Anti freeze Heatsink temperature overheat prevention overheat prevention protection control overheat prevention 0 1 Controlled 2 Controlled 3 Controlled Controlled 4 Controlled 5 Controlled Controlled 6 Controlled Controlled 7 Controlled Controlled Controlled 8 Controlled 9 Controlled Controlled A Controlled Controlled b Controlled Controlled Controlled C Controlled Controlled d Controlled Controlled Controlled Controlled Controlled Controlled F Controlled Controlled Controlled Controlled 82 Fan control state Reguest code 53 Fan step correction value by heatsink temperature overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Data display 0 x Display Correction value minus 0 0 1 1 2 2 Actuator output state Request code 54 Data display 0 0 Actuator output state D Actuator output state Actuator output state Actuator output state Compressor is
164. ting indoor units max 16 units The number of connecting remote control ler max 2 units When the above mentioned problem of O are not applied Diagnose remote controllers a When RC OK is displayed remote con trollers have no problem Turn the power off and on again to check If abnormality generates again replace indoor controller board b When NG is displayed replace remote controller c When or ERC 00 66 is dis played noise may be causing abnormality If the unit is not normal after replacing indoor controller board in group control indoor controller board of address 0 may be abnormal Remote controller control board O Abnormal if data cannot be read nor mally from the nonvolatile memory of the remote controller control board Error code E1 Abnormal if the clock function of remote controller cannot be operated normally Error code E2 Defective remote controller 32 O Replace remote controller Error Code Abnormal point and detection method Case Judgment and action Remote controller transmission error E3 signal receiving error Eb Q Abnormal if remote controller could not find blank of transmission path for 6 sec onds and could not transmit Error code 9 Remote controller receives transmitted data at the same time compares the data and when detecting it judges different data to be abnormal 30
165. ting the use or non use of clock function Timer function setting WEEKLY TIMER Setting the timer type EN Contact number setting for error situation CALL Contact number display in case of error Setting the telephone number 4 Display change 1 DISP MODE SETTING Temperature display C F setting TEMP MODE C 9F Setting the temperature unit C or F to display 2 Room air temperature display setting ROOM TEMP DISP SELECT Setting the use or non use of the display of indoor suction air temperature Automatic cooling heating display setting AUTO MODE DISP Setting the use or non use of the display of Cooling or Heating display during operation with automatic mode Details are specified Function selection flowchart Refer to next page 1 Stop the air conditioner to start remote controller function selection mode 2 Select from item1 gt 3 Select from item2 4 Make the setting in item3 gt 5 Setting completed 6 Change the display to the normal End Detailed setting 4 1 CHANGE LANGUAGE setting The language that appears on the dot display can be selected Press the button to change the language Japanese JP English GB German D O Spanish E Russian RU Italian 1 Chinese CH French F 4 2 Function limit 1 Operation function limit setting
166. tion The blower is operating just for cooling down the heated up air conditioner This will be done within 1 minute This control is conducted only when the HEAT operation is stopped with the electric heater ON However this control is also applied to the models which has no electric heater The airflow direction is changed during COOL operation Something is wrong with the airflow direction O If the up down is set to downward in COOL operation it will be automatically set to horizontal blow by the microprocessor in order to prevent water from dropping down 1 will be displayed on the remote controller if the up down vane is set to downward with the fan speed set to be less than LOW The airflow direction is changed during HEAT operation The airflow direction cannot be set by remote controller In HEAT operation the up down is automatically controlled according to the temperature of the indoor unit s heat exchanger In the following cases written below the up down vane will be set to horizontal blow and the setting cannot be changed by remote controller 1 At the beginning of the HEAT operation 2 While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate 3 During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released STANDBY will be displ
167. ture range limit setting on cooling heating and automatic mode is made at the same time However the range cannot be limited when the set temperature range has not changed To increase or decrease the temperature press the V AJ button To switch the upper limit setting and the lower limit setting press the 4 4 button The selected setting will flash and the temperature can be set Settable range Cooling Dry mode Lower limit 19 30 C Upper limit 30 19 C Heating mode Lower limit 17 C 28 C Upper limit 28 C 17 C Automatic mode Lower limit 19 28 C Upper limit 28 19 C 75 4 3 Mode selection setting 1 Remote controller main sub setting switch the setting press the ON OFF button O Main The controller will be the main controller Sub The controller will be the sub controller 2 Use of clock setting To switch the setting press the ON OFF button ON The clock function can be used OFF The clock function cannot be used 3 Timer function setting To switch the setting press the C ON OFF button Choose one of the followings WEEKLY TIMER initial setting The weekly timer can be used AUTO OFF TIMER The auto off timer can be used SIMPLE TIMER The simple timer can be used TIMER MODE OFF The timer mode cannot be used Whenthe use of clock setting is OFF the WEEKLY TIMER cannot be used 4 Contact numbe
168. uble is reoccurring at service are summarized in the table below Check the contents below before investigating details Unit conditions at service Error code Actions to be taken for service summary Judge what is wrong and take a corrective action according Displayed to 11 4 Self diagnosis action table The trouble is reoccurring Conduct troubleshooting and ascertain the cause of the Not displayed trouble according to 11 5 Troubleshooting by inferior phenomena Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor poor connection of wiring noise and etc Re check the symptom and check the installation environment refrigerant amount weather when the trouble occurred matters related to wiring and etc Reset error code logs and restart the unit after finishing service GThere is no abnormality in electrical component controller board remote controller and etc The trouble is not reoccurring the abnormal symptom GOConduct trouble shooting and ascertain the cause of the trouble according to 11 5 Troubleshooting by inferior phenomena Not logged GContinue to operate unit for the time being if the cause is not ascertained There is no abnormality concerning of parts such as electrical component controller board remote controller and etc 11 2 CHECK POINT UNDER TEST RUN 1 Before test run
169. unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If there was no trouble with above in single refrigerant system one outdoor unit controller of displayed address or attribute is defective If there was no trouble with O amp above in dif ferent refrigerant system 2 or more outdoor units judge with If address of abnormality source is the address that should not exist there is the unit that memorizes nonexistent address information Delete useless address informa tion with manual setting function of remote controller Only the system FRESH MASTER or LOSSNAY are connected to or the system that is equipped with group setting of differ ent refrigerant system If there was no trouble with O above replace the controller board of displayed address or attribute If the unit does not return to normal multi con troller board of outdoor unit may be defective repeater circuit Replace multi controller board one by one to check if the unit returns to normal Continued to the next page From the previous page Error Code Abnormal point and detection method Case Judgment and action 4 If displayed address or attribute is remote controller indoor unit detects abnormality when indoor unit transmits signal to remote controller and there was no reply ACK O During group operation with indoor unit of multi refrigerant
170. urns Example When 130 C 0 5 secs 0 5secs 2 secs 1 30 gt Compressor operating current on error occurring 0 20 Error code history 1 latest Alternate display of abnormal unit number and code When no error history and are displayed by turns Code display Error code history 2 Alternate display of error unit number and code When no error history and are displayed by turns Code display Thermostat ON time 0 999 0 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 245 minutes 0 5 secs 0 5secs 2 secs 2 gt 45 gt Minute Test run elapsed time 0 120 63 0 120 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 105 minutes 0 5 secs 0 5secs 2 secs 1 ES t J SW2 setting Display detail Explanation for display The number of connected indoor units 0 4 The number of connected indoor units are dis played Capacity setting display Displayed as an outdoor capacity code Capacity Code P200 40 P250 50 Code display Outdoor unit setting infor
171. utdoor controller board High discharging temperature 1 Abnormal if discharge temperature thermistor TH4 exceeds 125 or 110 C continuously for 5 minutes Abnormal if condenser evaporator temperature thermistor TH5 exceeds 40 C during defrosting and discharge temperature thermistor TH4 exceeds 110C 2 Abnormal if discharge superheat Cooling TH4 5 Heating TH4 TH6 exceeds 70 C continuously for 10 minutes Q Overheated compressor opera tion caused by shortage of refrigerant Defective operation of stop valve Defective thermistor Defective outdoor controller board O Defective action of linear expansion valve Clogging with foreign objects in refrigerant circuit Clogging occurs in the parts which become below freez ing point when water enters in refrigerant circuit O Check intake superheat Check leakage of refrigerant Charge additional refrigerant Check if stop valve is fully open OG Turn the power off and check if 03 is dis played when the power is turned on again When U3 is displayed refer to Judgement and action for US Check linear expansion valve Refer to 11 6 After recovering refrigerant remove water from entire refrigerant circuit under vacuum more than 1 hour Open short circuit of discharge temperature thermistor TH4 Abnormal if open 3C or less or short 217 C or more is detected during compressor operation Detection is inoperat
172. ve operation of lin ear expansion valve To prevent piping stress be sure to attach the coil holding the main body of linear expansion valve firmly Otherwise pipe may break 51 11 8 EMERGENCY OPERATION 1 When the error codes shown below are displayed on outdoor unit microprocessor for wired remote controller or indoor unit has a failure but no other problems are found emergency operation will be available by setting the emergency opera tion switch SWE on indoor controller board to ON and short circuiting the connector CN31 on outdoor controller board e When following abnormalities occur emergency operation will be available Error code Inspected content 04 Open short of pipe thermistor TH3 TH6 E8 Indoor outdoor unit communication error Signal receiving error Outdoor unit E9 Indoor outdoor unit communication error Transmitting error Indoor unit Communication error other than outdoor unit Ed Communication error between outdoor controller board and M NET board Serial communication error 2 Check the following items and cautions for emergency operation O Make sure that there is no abnormality in outdoor unit other than the above abnormalities Emergency operation will not be available when error code other than the above are indicated For emergency operation it is necessary to set the emergency operation switch SWE on indoor controller board Refer to the e
173. y current control Secondary current control The ones digit In this digit the total number of activated control is displayed Compressor operating frequency control Preventive control for excessive temp C ode erature rise of discharge temperature Preventive control for excessive temp erature rise of condensing temperature Frosting preventing control Preventive control for excessive temp erature rise of radiator panel Example The following controls are activated Primary current control Preventive control for excessive tempe rature rise of condensing temperature Preventive control for excessive tempe rature rise of heatsink display Indoor pipe temperature Liquid 39 88 TH2 4 When the temperature is 0 C or less and Indoor 4 temperature are displayed by turns 89 88 Indoor pipe temperature Cond Eva 39 88 TH5 4 When the temperature is 0 C or less and Indoor 4 temperature are displayed by turns 39 88 Target subcool step 69 12 FUNCTION SETTING 12 1 UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER function can be set according to necessity using the remote controller The setting of function for each unit can only done by the remote controller Seleci function available from the table 1 Table 1 Function selections 1

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