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PCH24EK1 PCH30EK1 PCH36EK1 PCH42EK1

1. PCH30EK1 86 80 75 70 Indoor DB temperature F 30 40 50 60 70 80 90 100 11 0 Outdoor ambient temperature DB F psi G 100 90 80 70 60 50 Suction pressure 40 30 20 Data is based on the condition of outdoor humidity 7596 A point on the curve shows the reference point Heating mode psi G 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 Condensing pressure PCH30EK1 75 65 50 20 2530 35 40 45 50 55 60 65 70 DB F Outdoor ambient temperature Suction pressure psi G 80 70 60 50 40 30 20 10 PCH30EK1 Indoor DB temperature F 30 40 50 60 70 80 90 100 110 F Outdoor ambient temperature DB PCH30EK1 75 65 20 25 30 35 40 45 50 55 60 65 70 DB F Outdoor ambient temperature OC193 14 86 80 75 70 __ Data is based on the condition of indoor humidity 50 Air flow should be set at HI A point on the curve shows the reference point lt Cooling mode gt PCH36EK1 psi G 100 90 80 70 60 Condensing pressure 50 Suction pressure 40 d
2. ooo N Remote ooo controller cable Multiple remote control ON OFF display Remote Remote Remote Field supply controller controller controller Operation check lt Wiring diagram gt Indoor controller board Notes on Signs X1 Relay for check lamp X2 Relay for operation lamp RL Check Lamp GL Operation Lamp Field supplied parts Relays 12V DC with rated coil power con sumption below 0 9W Lamps Matching to power supply voltage Power supply Multiple remote controller adapter 4 No 1 unit No 2 unit No 3 unit connect to the connector CN51 Multiple Remote Control Display Relay box OC193 55 13 DISASSEMBLY PROCEDURE PCH24FK1 OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the air intake grille 1 Unhook the clasps at the edge of the grille and open the Figure 1 grill 2 Lift up the grill in direction of arrow in Figure 2 7 _ 3 Pull the grill toward you to remove In direction of arrow Side panel L SS uem s Air intake grille Lower panel Figure 2 I hy oO I t rr 2 Removing the side panel Figure 3 et 1 Remove a white screw of the side panel RIGHT Fri a 2 Pull out the panel toward you to remove _ i 3 Remove a white scr
3. 1 5 JP lt 1 lt lt lt OT L m lt lt Q lt a N m a Ql lalala OC193 67 15 OPTIONAL PARTS 1 TIMER When using a program timer a program timer adapter PAC 825AD is also needed PAC 825AD is included with PAC SC32PTA Part No PAC SC32PTA with set back function Model Name Program timer 1 1 Program timer specifications Parts name Program timer Parts No PAC SC32PTA Exterior dimensions inch 5 4 32x4 23 32x23 32 130x120x18mm Installation Wall mount Type of clock Quartz Clock accuracy 50 second month at 77 F Display Time Liquid crystal display Week Liquid crystal display Timer setting unit Liquid crystal display Program cycle 24 hours Timer setting unit 30 minutes No of set points 48 day Power rating 5V DC 5 Supplied by Remote Controller 1 2 Feature of program timer 1 Daily timer function Daily timer can be set in 30 minutes units for up to 24 hours Each unit can be set for unit ON unit OFF or setback operation 2 Setback operation PAC SC32PTA Set back operation is useful for reducing running costs e g At a hotel with a 24 hour system 8 00 23 00 Cooling operation with set temperature at 79 F 23 00 8 00 Setback
4. COOL mode After 15min T T0 2 NO After 15min 2 CooL operation HEAT operation Cool mode set Hear operation 15 1 i iii When thermostat is OFF In the case i ii and iii above airflow is horizontal regardless the VANE setting 16 When AUTO operation is started COOL or HEAT mode is selected automatically 17 T1 Room temperature To Set temperature Until Low airflow is set while hot adjustment ii While defrosting FAN STOP OC1 93 28 8 MICROPROCESSOR CONTROL 1 0UTLINE OF MICROPROCESSOR CONTROL INPUT to remote controller OFF ON switching COOL DRY AUTO HEAT selector switching Thermostat setting TIMER mode selector switching and Timer setting HIGH LOW fan speed switching AUTO Vane selector AIR DISCHARGE switching Swing louver switching AIR SWEEP TEST RUN switching CHECK mode switching Self diagnostic trouble shooting INPUT from indoor unit Room temperature thermistor TH1 Pipe temperature thermistor TH2 OUTPUT to indoor unit Auto vane s angle setting Swing louver control ON OFF Booster heater ON OFF Control Emergency stop Remote controller board OUTPUT to remote controller Processes and transmits orders Remote controller LCD indicat
5. Heating Maximum temperature Minimum temperature 6 OUTLET AIR SPEED AND COVERAGE RANGE The air coverage range is the value up to the position Air speed Coverage where the air speed is 0 8ft sec when air is blown out ft sec range ft horizontally from the unit at the High notch position The coverage range should be used only as a general 24 1 15 0 38 guideline since it varies according to the size of the room and furniture installed inside the room PCH30EK 15 0 38 PCH36EK 16 5 48 PCH42EK 16 5 48 7 ADDITIONAL REFRIGERANT CHARGE R22 oz Outdoor unit Refrigerant piping length one way precharged up to 100ft 115ft PCH24EK1 9 Ibs 15 oz 2 PCH30EK 10 lbs 2 oz PCH36EK 10 lbs 9 oz PCH42EK 12 105 9 oz OC193 18 8 NOISE CRITERION CURVES PCH24EK PCH30EK OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR 90 80 70 60 50 40 30 20 NOTCH SPL dB LINE Hi 50 Lo 43 AA 42 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 002 MICRO BAR 90 80 70 60 50 40 30 20 APPROXIMATE i THRESHOLD OF LoT NE HEARINGFOR 1 CONTINUOUS 4 i je NOISE I i i 4 63 125
6. MAIN OPERATION START p Power circuit breaker YES Check SW ON twice NO x 1 Operation SW YES ON NO YE OFF timer MES NO NO 4 Set time NO ON timer complete YES YES Set time YES gt complete 2 NO NO gt lt Trouble YES Remot controller gt operation display STOP Trouble STOP Operating mode YES sm COOL PROTECTION DEVICE PROTECTION DEVICE No COOL operation SELF HOLD RELEASE SELF HOLD YES 6 Operating mode Remote controller M indicator lamp OFF Remety controle DRY operation Operating mode YES HEAT Indoorside i NO HEAT operation DX Fan STOP 5 erating ES i i Auxiliary heater OFF NO FAN operation Auto COOL HEAT SG oai rM operation Outdoor side e 1 5 Compressor OFF Fan STOP Four way valve OFF 1 In addition the centralized and remote control can be operated x2 The modes which indicate the sources of trouble are listed below EO Signal transmitting receiving error P1 Room temperature thermistor malfunction P2 Indoor coil thermistor malfunction P4 Drain sensor malfunction P5 Drain over flow P6 Coil frost overheat protection P7 System error P8 Outdoor unit trouble x3 The CHECK switch will show if an error has occurred
7. OC193 6 Remote controller display gt CENTRALLY CONTROLLED display This indicates when the unit is con trolled by optional features such as central control type remote controller display operation and time operation modes are set It also display the time for the timer operation at the same time as when it is set This indicates when the continuous OPERATION MODE display This indicates the operation mode STANDBY display This indicates when the standby mode is set from the time the heat operation starts until the heating air is discharged DEFROST display This indicates when the defrost oper ation is performed display This indicates when a malfunction has occurred in the unit which should CLOCK display The current time start time and stop time can be displayed in ten second intervals by pressing the time switch button The start time or stop time is always displayed during the timer operation In this display example on the bottom left a condi tion where all display lamps light is shown for explanation purposes although this differs from actual operation AIR DISCHARGE display This displays the air direction ITSUBISHI Baker Mi SUIM CENTRALLY CONTROLLED 8 DRY COOL mmer orr MER cLock Auro auro B CHECK TEMP
8. r DB temperature F Z 40 30 2 190 30 40 50 60 70 80 90 100 110 30 40 50 60 70 80 90 100 110 Outdoor ambient temperature DB F Outdoor ambient temperature DB F Data is based on the condition of outdoor humidity 75 A point on the curve shows the reference point Heating mode PCH42EK1 psi G 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 20 2530 35 40 45 50 55 60 65 70 20 2530 35 40 45 50 55 60 65 70 DB F DB F Outdoor ambient temperature Outdoor ambient temperature PCH42EK1 Condensing pressure Suction pressure OC193 16 4 STANDARD OPERATION DATA Models PCH24EK1 PCH30EK PCH36EK1 PCH42EK1 Item Cooling Heating Cooling Heating Cooling Heating Cooling Heating Electrical circuit Voltage 208 230 208 230 208 230 208 230 208 230 208 230 208 230 208 230 Frequency Total input 3 13 3 4 4 3 Indoor fan current 0 7 0 7 0 7 0 7 1 3 1 3 1 3 1 3 Booster heater current 7 6 8 4 9 8 10 8 10 8 12 0 10 8 12 0 Outdoor fan current 0 65 0 65 0 65
9. ut Go pus anj mij uti Bee aD SH dt dE E woo MITCH JRE 38 5 woe Dairi K l age usi alii Wii Dau 1234335 OC193 20 Unit inch Hazel a We SUS ditur ry j pue Buch aij ape por tuf put qua pum gun mq BEE SRC eg Speed SE pru mu it UCL JO Maj FM zum ypc Indoor unit PCH36 42EK1 OC193 21 Remote controller 5 1 8 Unit inch 3 32 _ 23 32 MITSUBISHI ELECTRIC povorr o CN STAD BY DEPPOST 4 3 4 7 3 4 REFRIGERANT SYSTEM DIAGRAM PCH24EK1 aoa pipe option gal with heat insulator x Strainer Indoor coil Rafi thermistor Restrictor efrigerant pipe RH2 valve or Distributor H with heat insulator Capillary tube 40 126 40 071 15 7 PCH30 36 42EK1 s Refrigerant pipe option 47 8 PCH42EK 3 4 PCH30 36EK with heat insulator ainer Indoor coil Refrigerant pipe thermistor Restrictor option valve 1 2 1 7 with heat insulator Distri
10. The test run works for 2 hours and stops automatically To cancel the test run press ON OFF button or TIMER ON OFF button Displayed during test run OC193 40 eee 1 Indoor coil temperature code During the test run the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of room temperature The code should fall with the lapse of time in normal COOL operation and should rise in normal HEAT operation pee 1 2 3 pepe 57 ye Indoor coil temperature Thermistor abnormality 2 Trouble during test run If the unit malfunctions during the test run refer to section 10 in this manual entitled TROUBLESHOOTING When the optional program timer is connected to the conditioner refer to its operating instructions 2 8 Emergency operation When the remote controller or microprocessor malfunctions but all other parts are normal emergency operation is started by setting the dip switch SW3 on the indoor controller board lt Before emergency operation gt 1 Make sure the compressor and the indoor fan are operating normally 2 Locate the defect with the self diagnostic function When the self diagnostic function indicates protective function is working release the protective function before starting the emergency operation CAUTION When the self diagnostic function indicates a check code of P5 drain pump malfunction DO NOT start the em
11. lt lt ek OC193 65 PCH36EK 42 STRUCTURAL PARTS PCH36EK1 PCH42EK1 Fr M Fm 26 L aa 22 23 21 19 28 25 OC193 66 __ Part number that is circled is not shown in the figure Circuit Recom Parts No Parts Name Specifications Remarks Diagram mended Drawing No Symbol Q ty z o R01 055 662 SIDE PANEL LEFT R01 055 661 SIDE PANEL RIGHT R01 055 651 FRONT PANEL UPPER 055 652 FRONT PANEL LOWER R01 055 669 LOWER PANEL R01 029 691 INTAKE GRILL R01 029 692 INTAKE GRILL 2 R01 A25 500 AIR FILTER R01 055 501 AIR FILTER SUB T7W 051 501 AIR FILTER T7W 056 676 REAR 8 TOP PLATE R01 029 061 GRILL HINGE R01 029 054 GRILL CATCH R01 045 048 LOUVER SUPPORT R01 055 001 FRONT GRILL R01 055 003 SWING LOUVER R01 029 089 LOWER LOUVER LEFT R01 029 088 LOWER LOUVER RIGHT R01 045 090 LOWER LOUVER MIDDLE R01 029 086 FRONT LOUVER LEFT R01 029 085 FRONT LOUVER RIGHT R01 055 087 FRONT LOUVER MIDDLE R01 055 002 AUTO VANE R01 055 068 SIDE BOX LEFT R01 055 067 SIDE BOX RIGHT R01 029 222 LOUVER MOTOR T7W E01 222 LOUVER MOTOR T7W 029 223 VANE MOTOR R01 029 060 VANE CRANK R01 045 808 LEG R01 82E 656 FILTER GUIDE
12. 5 42 gt x gt 36 5 5 71 8 67 85 24 6 4 5 q 5 4 0 63 5 a 5 3 5 5 5 3 0 8 Indoor intake air DB temperature F 2 5 Indoor intake air WB temperature F e 32 35 45 55 65 67 75 85 95 105 115 15 25 235 45 55 65 Outdoor intake air temperature F Outdoor intake alr WB PCH42EK1 COOLING CAPACITY PCH42EK1 HEATING CAPACITY 5A SHF 0 67 66 Not include booster heater 2 8kW Indoor intake air WB temperature F Indoor intake air DB temperature F Total capacity x103 Btu h Total capacity x103 Btu h ndoor intake air WB temperature temperature F Total power consumption kW Total power consumption kW 32 35 45 55 65 67 75 85 95 105 115 15 25 35 45 55 65 Outdoor intake air WB temperature F Outdoor intake air DB temperature F i P CF OC193 12 3 CONDENSING PRESSURE AND SUCTION PRESSURE Data is based on the condition of indoor humidity 50 Air flow should be set at HI A point on the curve shows the reference point lt Cooling mode gt psi G 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 Condensing pressure PCH24EK1 Indoor DB temperature F 30 40 50
13. Addition of CN2L Optional parts Program timer PAC SK65PT OC193 2 PAC SK32PTA 2 FEATURES EEN s 0 ui PCH24EK Microprocessor Indoor Unit Remote controller Models Cooling capacity Heating capacity SEER PCH24EK1 24 000 27 000 33 500 Btu h 10 3 PCH30EK1 30 000 33 000 41 500 Btu h 10 0 PCH36EK1 35 400 38 000 47 600 Btu h 10 4 PCH42EK1 42 000 45 000 54 600 Btu h 10 0 1 ADVANCED MICROPROCESSOR CONTROL 1 Easy to use Microprocessor remote controller 1 Ultra Thin Remote Controller The streamlined square controller is designed to blend with any kind of interior and the adoption of a sophisticated microprocessor allows you to carry out a wide range of operations easily 2 Attractive Liquid Crystal Display LCD Units operation mode set temperature room temperature timer setting fan speed louver operation and air flow direc tion are displayed on the remote controller with the easily understood visual Liquid Crystal Display LCD 3 Convenient 24 Hour ON OFF Timer The timer allows Mr SLIM to be switched on and off automatically at the time you set Once the timer is set the remain ing time is shown on the LCD 4 Self Diagnostic Feature Indicates Faults Instantly In the rare case when a problem occurs the unit stops operating and the set temperature indicator changes to the self diagnostic indicator indicating th
14. NO 3 min restart prevention NO Indoor piping 5 F or lower Hot adjust start YES 0 minute compressor operation YES Allowance cancel 6 min restart 11 prevention Heating YES area Outdoor unit trouble FAN SPEED very low Compressor ON FAN SPEED Very low airflow Compressor OFF Airflow area 20 min elaspe Indoor piping YES 131 F or lower NO heater thermostat ON YES Auxiliary heater ON YES Indoor piping Auxiliary heater ON 140 F or higher Airflow 10 up FAN setting notch YES Indoor piping 95 F or higher HOT adjust OW FAN SPEED setting notch YES 4 Auxiliary heater OFF Airflow area Heating area Outdoor unit trouble Overheat remote START 11 Airllow area Cooling area ES Defrost operation START Four way valve Y HEAT mode NO Indoor unit 158 F or higher Allowance period YES Overload protect 6 minute restart prevention Allowance set Compressor OFF v Hot adjust release
15. P8 Abnormality of outdoor unit 1 Wrong wiring of indoor outdoor 1 Check the indoor outdoor connecting wire connecting wire 2 Change the connection of electric wiring 2 Reversed phase 3 Check the detail of the protection device 3 Protection device has worked 4 Measure the resistance of the outdoor coil ther 4 Damaged outdoor coil thermis mistor If normal replace the outdoor controller tor board OC193 46 3 WRONG WIRING ON SITE 3 1 Between remote controller and indoor unit If the wire is disconnected between the remote controller and the indoor unit nothing is displayed on the remote controller when the POWER button is pressed The beep sound will also not be heard 3 2 Phenomenon due to wrong wiring between indoor and outdoor units Wrong wiring Mode Thermostat Phenomenon OFF Operation stops nadar i Outdoor COOL on valve turns ON 9 minutes later check code P8 appears on remote controller display 2 e OFF Cooling operation Several minutes later check code P8 appears HEAT on remote controller display ON Normal operation OFF Outdoor unit stops Indoor Outdoor COOL Operation stops 9 minutes later check code P8 appears on gt remote controller display 3 OFF Operation stops HEAT ON Operation stops 27 m
16. PT 4 OTHER TROUBLES AND CAUSES Vane motor relay has broken Size of cam is not proper a Refer to check code on remote controller display If drain pump has broken or coil frost protection has worked operation does not stop only in 5 to a Vane motor limit switch has broken Vane motor has broken a Badly connect Disconnected vanes do not work CI Vane motor does not work _ ane motor has broken Limit switch does not work Connector is badly connected RER Vane motor is badly assembled Indoor controller board is damaged Unit stops after 5 to 20 seconds operation See page 193 46 a 20 seconds Air discharge display Indoor unit is regarded C indoor controller has is OFF and air dis as without auto vane charge UP DOWN Dip switch setting is button is not available wrong Horizontal angie has a Indoor controller has been detected In this case remote broken controller is normal Vane motor has broken Vane motor limit switch is badly connected Auto vane is wired after power is turned to ON U but display is turned CI T indoor outdoor connect OFF ing wire is wrong con nected Indoor outdoor connect ing wire shorts Compressor protector has broken Beep sound is not heard and display Deicer has broken remains OFF broken Transmission wire is badly connected aq T Remote c
17. __ PCH24EK1 PCH30EK1 PCH36EK1 PCH42EK1 CONTENTS 41 TECHNICAL CHANGE zeeen seeden a ra OC193 2 A FU eee OC193 3 3 PART NAMES AND FUNCTIONS eeen eee OC193 6 4 SPECIFICATIONS accetta pact tutae Gada un OC193 8 E BATA sce a A RAE OC193 9 6 OUTLINES AND DIMENSIONS 0 193 20 7 REFRIGERANT SYSTEM DIAGRAM eeen a a OC193 22 8 WIRING DIAGRAM RET 0 193 23 9 OPERATION FLOW CHART nennen ee enne 0 193 25 10 MICROPROCESSOR CONTROL 0 193 29 11 TROUBLESHOOTING I winne OC193 44 i9 SYSTEM CONTROL 0 193 51 13 DISASSEMBLY PROCEDURE I u OC193 56 PARTS IST aten S unu OC193 61 15 OPTIONAL PARTS extern OC193 68 OC193 1 Differences with 002 which is a basic service manual Remote controller Change points Appearances 4 3 4 2 3 4 x 5 8 1 TECHNICAL CHANGE 5 1 8 x 4 3 4 x 3 4 SW17 NOS Switch for temperature unit Canceled Dip switch No 0 Switch for louvers Canceled SW18 Addition of Mode selector Indoor controller SW1 No 10 OFF ON Dip switch No 3 SW5 Addition of Not yet used No 4 Addition of LOSSNAY interlocked or not Connector for LOSSNAY interlocked
18. a 3 Indoor intake air DB temperature F m Indoor intake air WB temperature F E e xime 5 2 gt 5 24 S E P 63 18 7 3 0 47 6 63 g 2 5 2 a 3 2 0 5 T Indoor intake air WB temperature F Indoor intake air DB temperature F a F 3 32 35 45 55 65 67 75 85 95 105 115 15 25 35 45 55 65 Outdoor intake air DB temperature F OON intake WB temperature er PCH30EK1 COOLING CAPACITY PCH30EK1 HEATING CAPACITY SHF 0 68 Not include booster heater 2 5kW 42 54 air WB temperature F Indoor intake air DB temperature F W Total capacity x103 Btu h Total capacity x103 Btu h R R o a O ke air DB temperature F Indoor intake air WB temperature F N o Total power consumption kW Total power consumption kW 32 35 45 55 65 67 75 85 95 105 115 15 25 35 45 55 65 Outdoor intake air DB temperature Outdoor intake air WB temperature OC193 11 NOTES A point the curve shows the reference point PCH36EK1 COOLING CAPACITY PCH36EK1 HEATING CAPACITY SHF 0 73 Not include booster heater 2 8kW gt I gt 3 i Indoor intake air WB temperature F Indoor intake air DB temperature F
19. lt Overheat prevention gt When the indoor coil thermistor rises to 140 F or above the booster heater cannot work When the indoor coil thermistor falls to 131 F or below the booster heater can work OC193 36 eee 5 Detecting abnormalities in the outdoor unit When the outdoor unit is determined to be abnormal by the following causes the compressor will stop and the check code P8 will appear on the remote controller display i During compressor ON while hot adjustment is set If the difference between the indoor coil temperature and room temperature is in the RANGE B the indoor fan will stop Within 20 minutes after entering RANGE B except for the first 10 seconds a If the temperature difference enters RANGE A the hot adjustment starts b If the temperature difference is still in RANGE B the outdoor unit is deemed abnormal C If the temperature difference enters RANGE C defrosting starts Within 20 minutes after entering RANGE C if the temperature difference does not return to RANGE B the outdoor unit is deemed abnormal If the temperature difference returns to RANGE B the next 20 minutes is an allowance period If the difference enter RANGE A during the allowance defrosting ends and the hot adjustment starts If the difference does not enter RANGE A during the allowance the outdoor unit is deemed abnormal ii During compressor ON in defrosting After 30 minutes of defrosting in hot adjustment if t
20. START STOP FAN x HEAT wo ELT Es STAND BY cu SERX CHECK NODE ps d Ober 88 88 Vies CET MODE TIMER ON OFF CLOCK TIMER FAN SPEED AIR DISCHARGE FILTER AIRSWEEP CHECK CAD TEMP TIMER SET TEST RUN REMOTE CONTROLLER M PAR JH250KUS F display display This displays the selected setting temperature This lamp lights when electricity is supplied to the unit FAN SPEED display The selected fan speed is displayed BB display The temperature of the return air is displayed during operation The dis play range is 47 F to 97 F The dis play flashes 47 F when the actual temperature is less than 47 F and flashes 97 F when the actual tem perature is greater than 97 F Operation lamp This lamp lights during operation goes off when the unit stops and flashes when a malfunction occurs SSR This display lights in the check mode or when a test operation is per formed display be checked This lamp lights when the filter needs to be cleaned Caution Only the display lights when the unit is stopped and power supplied to the unit When power is turned ON for the first time the CENTRAL CTRL display appears to go off momentarily but this is not a malfunction When the central control remote control unit which is sold separately is used the ON OFF button OPERATION MODE button and SET
21. remote controller Remote controller 3 Both remote ON Optional All units can be turned on or off simultaneously using the OFF and individ adapter Relay box remote ON OFF switch Besides each unit can be con ual controls trolled individually by each remote controller During See page 7 gt Fm remote ON OFF control a message of CENTRALLY OC193 53 CONTROLLED is displayed on the LCD of the remote controller Remote Remote This method is available for both one unit control and sev a controller eral units control 4 Individual control By grouping the remote controllers to one place several by grouping units installed at different locations can be controlled indi remote controllers EL vidually and operation conditions of all units are visible See page Unit Unit Unit without a special control board Control method is the OC193 54 same as that of the single unit with a single remote con troller Remote controller Multiple remote control display See page OC193 55 Wr ROZ Unit 25 Unit f Unit nit Remote contro display board Remote controller Several units can be controlled by remote control display board Operation conditions of all the units are visible with the remote control display board Individual control by each remote controller is also avail able AUTO RESTART FUNCTION See page OC193
22. 0 65 0 75 0 75 0 75 0 75 0 75 0 75 0 75 0 75 0 8 0 8 0 8 0 8 Comp current 11 3 10 4 10 9 10 2 14 0 13 3 14 3 13 5 16 1 14 3 14 7 14 0 21 0 19 1 19 5 18 7 5 m o I oc Condensing pressure 245 236 232 243 235 216 240 252 Suction pressure 81 60 76 58 77 58 71 56 Discharge temperature Condensing temperature Suction temperature Comp shell bottom temperature Ref pipe length 25 25 25 Refrigerant charge 9 Ibs 15 oz 10 Ibs 2 oz 10 Ibs 9 oz 12 Ibs 9 oz Indoor side Intake 80 70 70 80 70 80 70 air temperature 67 60 60 67 60 67 60 Discharge 59 98 58 100 55 106 air temperature 57 57 54 Fan speed Airflow High Outdoor side Intake air temperature Fan speed upper lower Airflow Capacity SHF OC193 17 5 OPERATING RANGE 1 POWER SUPPLY Min Max 1 Phase 60Hz 208 230V 198V 208 230V 253V Guaranteed voltage range 2 OPERATION Air intake temperature Indoor Outdoor Function Condition z x WB F Standard temperature Maximum temperature Cooling Minimum temperature Maximum humidity Standard temperature
23. 115 FDB Minimum 67 FDB 57 FWB 0 Maximum 80 FDB 67 FWB 75 FDB 65 FWB Minimum 70 FDB 68 FWB 17 FDB 15 FWB In case of the wind baffle is installed In case of the wind baffle is not installed the minimum temperature will be 23 FDB Cooling Heating OC193 8 5 DATA MODELS PCH24 30 36 42EK1 1 PERFORMANCE DATA 1 COOLING CAPACITY Models Outdoor intake air DB temperature F Models Airflow 95 CFM 4 B F TC SHC TPC TC 15 4 2 53 PCH24EK1 17 8 2 46 19 4 2 38 171 317 _ 909 _ 20 2 3 06 22 4 3 02 20 3 3 60 PCH36EK1 23 8 3 53 26 6 3 43 226 4 54 PEER 26 7 437 30 1 4 19 Notes 1 B F Bypass Factor IWB Intake air wet bulb temperature TC Total Capacity x10 Btu h SHC Sensible Heat Capacity x10 Btu h TPC Total Power Consumption KW 2 SHC is based on 80 FDB of indoor intake air temperature 3 Cooling capacity correction factors and Refrigerant piping length one way range Refrigerant piping length one way 7Oft 85ft 100ft 115ft 130ft PCH24EK1 0 952 0 940 0 925 0 913 0 900 PCH30EK1 0 952 0 940 0 925 0 913 0 900 PCH36EK1 0 952 0 940 0 925 0 913 0 900 PCH42EK1 0 935 0 918 0 900 0 884 0 869
24. 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz NOTCH SPL dB LINE Hi 51 0 Lo 45 AA APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE i I 20 63 125 250 500 1000 2000 BAND CENTER FREQUENCIES Hz 4000 8000 PC H36EK NOTCH SPL dB LINE Hi 51 Lo 45 A 90 T J J 80 tt J ko ar lt 3 m Il i X m 70 1 cR a r 8 N ox o 3 70 R E e 1 T Dl 60 1 I d gt J E Aa amp 50 o o 4 tc a 2 40 gt q L 1 z amp 30 1 r o da d i 20 APPROXIMATE THRESHOLD OF in i T HEARING FOR CONTINUOUS I Nee NOISE i i 10 I i 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz ceiling 1m unit about 1 4m MICROPHONE Ambient temperature 27 C Test conditions are based on JIS 78731 OC193 19 Unit inch OUTLINES AND DIMENSIONS Indoor unit PCH24 30EK1 6 SOUS LENCHRRI HODITE Pun KROES gael Burke
25. 55 Circuit breaker Remote controller OC193 51 Units can be started or stopped by circuit breaker on or off Remote controller is also available By this function when the power is restored after power failure the unit restarts automatically 2 GROUP CONTROL BY SINGLE REMOTE CONTROLLER A maximum of 50 units can be started in order according to the dip switch settings 2 1 How to wire Figure 1 1 Connect the remote controller to the double terminal block on the indoor controller board of the master unit that is No 0 unit See Figure 1 controller To the next To the next 2 Connect the double terminal block of the master unit to the Mme unit P double terminal block of No 1 unit Master unit 3 Connect the double terminal block of No 1 unit to the dou electrical box HE Next unit The last unit ble terminal block of No 2 unit j electrical box isi dose not have 4 Continue the process until all the units are connected with E E this wire two wire cables See Figure 2 5 Remove the connector CN40 from the indoor controller lt s PA board of each unit except the master unit See Figure 3 Figure 2 6 Set the unit address of each unit with SW2 on the indoor controller board following the instructions below J 2 2 How to set unit add
26. F or lower LL NO Coil frost Coil frost prevention prevention release v Outdoor unit trouble Compressor ON Compressor OFF p Y 8 When operation stops or changes to cooling or dry mode the auto vane turns to a horizontal angle If opera tion changes during auto vane SWING the auto vane will continue to swing x9 When operating TEST RUN the thermostat will be continuously ON 10After minute compressor operation if the indoor coil thermistor reads 5 F or below for minutes the com pressor will stop for 6 minutes 11Cooling area Indoor coil temperature is more than 9 degrees above the room temperature Heating area Indoor coil temperature is more than 9 degrees below the room temperature FAN area Indoor coil temperature is within 9 degrees either way of the room temperature OC193 26 DRY OPERATION NO DRY operation Four way valve OFF Initial dry Vane setting notch operation YES x8 Vane initial setting YES a x 12 Room temperature is 64 F or lower NO During NO compressor ON YES 3 minute compressor operation NO Compressor amp thermostat ON Compressor ON time completes x8 9 12 Refer to page 193 26 gt YES 10 mi
27. Mode change HEAT COOL To 4 P 7 E N To 2 7 7N 7 N Z 7 2 SL To 4 lt 15 minutes Mode change ees LS Start 15 minutes COOL HEAT lt __ HEAT mode gt COOL mode lt HEAT mode ON e Compressor Orr LJ LJ LJ LJ LJ Minimum 3 minutes 3 Temperature range AUTO operation is available under the outside air temperatures as follows 0 10 20 30 40 50 60 70 80 90 100 110 120 F Le COOLING lt gt 17 F HEATING 75 F 115 F In case of the wind baffle installed OC193 38 1 2 5 Auto vane control ENT S Ulf lt How to operate gt To change the air flow direction press AIR DISCHARGE button O 60 downward 80 downward 100 and and 10096 downward horizontal 4096 horizontal 2096 horizontal 1 Frequency judgement When the unit operates for the first time after the circuit breaker turned to ON the frequency 50Hz or 60Hz is judged by the horizontality sensing switch If the frequency cannot be judged immediately for some reason the sensing operation continues for 10 minutes with the vane motor at ON If the frequency cannot be judged yet after 10 minute sensing the vane motor turns to OFF But the AIR DISCHARGE DIRECTION display continues to be indicated 2 During cooling operation When th
28. RANGE 9 RANGE C OC193 37 2 4 AUTO operation Automatic COOL HEAT change over operation lt How to operate gt AE mr SLIT ze Press POWER ON OFF button EE ped h A Press the MODE button to display AUTO Press the SET TEMP button to set the desired temperature NOTE The set temperature changes 2 F when the SET TEMP button is pressed one time Automatic 65 to 83 F works to change by itself the operation mode either to cooling or heating according to the room temperature 1 Initial mode When AUTO operation starts after unit OFF the room temperature is higher than the set temperature operation starts in COOL mode Ii the room temperature is equal to or lower than the set temperature operation starts HEAT mode When AUTO operation starts after COOL or HEAT operation the previous mode continues 2 Mode change HEAT mode changes to COOL mode when 15 minutes have passed since the room temperature became 4 degrees above the set temperature COOL mode changes to HEAT mode when 15 minutes have passed since the room temperature became 4 degrees below the set temperature When room temperature becomes 4 degrees above the set temperature the operation mode can not be changed To Set temperature 65 83 F for 15 minutes degree R Ao
29. TEMP button do not operate OC193 7 4 SPECIFICATIONS MODELS PCH24 30 36 42EK1 Item PCH24EK1 PCH30EK1 PCH36EK1 PCH42EK1 Cooling Btu h 24 000 30 000 35 400 42 000 Capacity Heating Btu h 27 000 32 500 33 500 33 000 39 800 41 500 38 000 45 900 47 600 45 000 52 900 54 600 Heating Btu h 18 400 23 900 24 900 18 000 24 800 26 500 19 600 27 500 29 200 24 800 32 700 34 400 Moisture removal Pints h 7 0 9 1 10 9 12 3 Power Cooling kW 2 46 3 06 3 53 4 37 Consumption Heating kW 2 42 4 02 4 32 3 13 5 13 5 63 3 4 5 7 6 2 4 3 6 6 7 1 Heating kw 2 1 3 7 4 0 2 6 4 6 5 1 2 7 5 0 5 5 3 2 5 5 6 0 EER 9 8 9 8 10 0 9 6 SEER 10 3 10 0 10 4 10 0 HSPF 7 1 7 1 74 7 3 COP 3 3 3 1 3 3 3 1 2 6 2 4 2 1 2 3 INDOOR UNIT MODELS PCH24EK1 PCH30EK1 PCH36EK1 PCH42EK1 External finish Munsell 2 5Y 8 0 3 8 N2 Power supply V phase Hz 208 230 1 60 Max fuse size time delay 20 25 25 25 Min ampacity 12 15 15 17 0 7 0 7 1 3 1 3 Booster heater 7 6 8 4 lt 1 6 1 9 gt 9 8 10 8 lt 2 0 2 5 gt 10 8 12 0 lt 2 3 2 8 gt 10 8 12 0 lt 2 3 2 8 gt Airflow Hi Lo 920 740 920 740 1 270 990 1 270 990 830 670 830 670 1 100 860 1 100 860 Sound level Hi Lo 50 43 50 43 51 45 51 45 Unit drain pipe O D in 1 1 1 1 i 50 7 16 Dimensions Weight OUTDOOR UNIT MODELS PUH 24EK PUHSOEK PUH36EK1 PUH42EK1 External finish Munsell 5Y 7 1 Power
30. abnormal board 3 Wrong operation of remote con If other check code appears replace the origi troller due to noise wave emit nal remote controller ted by other appliances 3 Short circuit between and of CN40 and attach CN40 to the following units Second unit in twin control Second and third units in triple control Sub units in group control P4 Abnormality of drain sensor 1 Bad contact of transmission 1 Check the connector wire 2 Measure the resistance of the thermistor 2 Damaged thermistor As for the normal resistance refer to the case P1 If normal replace the indoor controller board P5 Malfunction of drain pump 1 Malfunction of drain pump 1 Check the drain pump 2 Damaged drain sensor 2 Check the drain sensor Check the drain sensor heater If normal its resistance should be 82Q If normal replace the indoor controller board P6 frost protection has 1 Short cycle of air cycle 1 Clear the obstructions from the air cycle worked 2 Dirty air filter 2 Clean the air filter 3 Damaged fan 3 Check the fan 4 Abnormal refrigerant 4 Check the refrigerant temperature P7 System error 1 Wrong address setting 1 Check the address setting 2 Signal transmitting receiving cir 2 Check with another remote controller If check cuit of remote controller is code other than P7 appears replace the origi abnormal nal remote controller 3 Wrong SW6 setting 3 Check SW6 setting
31. changes to HEAT mode the drain pump con tinues to operate for 3 more minutes The drain pump does not work in check mode lt Drain sensor gt When both the drain pump and unit are operating the drain sensor detects the temperature This temperature tells whether the drain water level is above or under the drain sensor If the drain water level rises above the drain sensor due to a drain pump malfunction the unit will stop operating in order to prevent drain from overflowing The check code P5 on the remote controller will display this occurrence 6 Dew prevention heater To prevent dew from accumulating on the grille the dew prevention heater is continuously ON during COOL operation It is independent of the thermostat ON OFF OC193 32 __ 2 2 DRY operation MEE Qovorr o CENTRALLY CONTROLLED BB How to operate gt Press POWER ON OFF button Press the MODE button to display DRY Press the SET TEMP button to set the desired temperature NOTE The set temperature changes 2 F when the SET TEMP button is pressed one time Dry 64 to 86 F 88 89 lt DRY operation time chart gt Operation starts by Room temperature Room temperature Operation stops by POWER button becomes equal to rises above set POWER button ON set temperature temperature OFF Thermostat OFF ___ L L DRY MODE DRY MO
32. check mode is started 3 Auto vane control 1 Frequency judgement When the unit operates for the first time after the circuit breaker turned to ON the frequency 50Hz or 60Hz is judged by the horizontality sensing switch If the frequency cannot be judged immediately for some reason the sensing operation continues for 10 minutes with the vane motor at ON If the frequency cannot be judged yet after 10 minute sensing the vane motor turns to OFF But the AIR DISCHARGE DIRECTION display continues to be indicated ii During cooling operation When the cooling operation starts the horizontal discharge is automatically set However the desired discharge among four modes below listed can be selected with the AIR DIS lt Remote controller display CHARGE UP DOWN button on the remote controller RPE O 100 horizontal discharge n 60 downward and 40 horizontal discharge p 80 downward and 20 horizontal discharge 100 downward discharge NOTE Discharge is available only when the fan speed is HIGH UMA lt AUTO RETURN gt When discharge continues for 1 hour with the fan speed at LOW the discharge a direction turns to the horizontal discharge automatically 7 NOTE1 After that the discharge or is available by setting with the remote controller UMA and it continues for 1 hour NOTE2 If the discharge direction changes from or the direction
33. mode SW5 3 Not yet used SW5 4 OFF LOSSNAY on air intake LOSSNAY air intake 5 SW6 Model selector 4321 OFF ON SWG is set on site for twin triple control This switch is not available for series PCH 4 INDOOR FAN CONTROL Indoor fan relay output a During fan ON The indoor fan relay turns ON One second later the phase control will start During fan OFF The phase control turns OFF One second later the indoor fan relay will turn OFF OC193 43 11 TROUBLE SHOOTING 1 REMOTE CONTROLLER DISPLAY ABNORMALITY Display abnormality Cause Check points The display centrally con trolled on remote con troller does not disappear 1 Wrong address setting of remote con troller indoor controller board 2 Timer adapter is connected to the remote controller 3 Signal transmission error between indoor unit and remote controller 1 Check the address setting of remote controller and indoor controller 2 Check if the timer adapter is used correctly 3 Turn another remote controller s DIP SW17 7 ON to make it sub controller Connect the sub controller to the unit and turn circuit breaker ON If the display centrally controlled disap pears replace the original remote controller If the display remains the same replace the indoor controller board When remote controller POWER switch is turned to ON the check code EO appears 1 Signal transmissi
34. operation with 4 degrees of setback As shown in the chart on the right the set temperature rises 4 degrees 79 F automatically during the setback operation When the setback operation ends normal operation will begin 83 F 3 Weekly timer function ists A dn gt orma etbaci Daily timer function can apply to each day of the week operation operation operation 1 3 How to connect program timer 1 Install the program timer next to the remote controller the same way as the remote controller is installed 2 Connect the program timer and the remote controller with a 5 wire cable as shown in the figure below Connect to indoor unit 2 wire cable NOTE While the program timer is connected to the remote controller the 24hour ON OFF timer on the remote controller will not operate ngom 885 E ne DOS Use 5 wire cable Connect to CN1 Connect to CN1 OC193 68 1 4 Names and functions lt PAC SC32PTA gt WEEKLY TIMER SETTING DISPLAY Sets timer for a week CURRENT TIME DISPLAY During MONITOR status current time is display During Daily timer setting a time desire for timer setting is displayed SET BACK DISPLAY Indicates the set back range DAILY TIMER SETTING DISPLAY SET MONITOR DISPLAY change of weekly day daily and w
35. remote DON OFF switch In centralize control turn OFF the DON OFF button of centralize controller Check button NOTE The latest check code is memorize even if the check mode is cancelled by the way mentioned above It takes 60 seconds maximum to display the memorize check code 2 2 How to use the self diagnostic function for service A For normal control with one unit and one remote controller 1 Pressing the CHECK button on the remote controller twice starts the self diagnostic function 2 During the self diagnostic function CHECK MODE appears at two positions on the remote controller display Then at least 10 seconds later the unit address and the check code is alternately displayed at one second intervals 3 Check and repair the unit according to the check code Refer to page 193 46 B For group control using one remote controller 1 Pressing the CHECK button on the remote controller twice starts the self diagnostic function 2 Press the C4 SET TEMP button or 2 SET TEMP button on the remote controller to advance or go back to the unit address Each time gt SET TEMP button is pressed the unit address advances by one Each time C v SET TEMP button is pressed the unit address goes back by one The check code and the unit address appear alternately 3 The check code U8 means no malfunction has occurred since installation The check code E0 means the following conditions The unit address
36. supply V phase Hz 208 230 1 60 Max fuse size time delay A 20 30 30 40 Min ampacity A 16 20 22 27 Fan motor F L A 0 65 0 65 0 75 0 75 0 75 0 75 0 8 0 8 Model type NH33NBD NH41NAD NH47NAD NH569NXA Compressor R L A 11 5 14 0 17 5 20 0 L R A 54 73 87 105 Crankcase heater A W 0 16 0 17 lt 33 39 gt 0 16 0 17 lt 33 39 gt 0 16 0 17 lt 33 39 gt 0 16 0 17 lt 33 39 gt Refrigerant control Capillary tube Defrost method Reverse cycle Sound level 55 55 w in 34 1 4 38 3 16 Dimensions in 11 5 8 13 9 16 H in 49 9 16 49 9 16 Weight 202 245 246 REMOTE CONTROLLER With indoor unit Control voltage by built in transformer Indoor unit remote controller DC12V Indoor unit outdoor unit DC12V REFRIGERANT PIPING Not supplied optional parts Liquid in 1 2 Gas in 3 4 Connection Indoors Flared method Outdoors Flared Between the indoor Height difference ft 164 amp outdoor units Piping length ft 165 NOTES 1 Rating conditions cooling indoor 80 FDB 67 FWB outdoor 95 FDB 75 FWB heating indoor 70 FDB 60 FWB outdoor 47 FDB 43 FWB 2 Rating conditions heating indoor 70 FDB 60 FWB outdoor 17 FDB 15 FWB 3 Heating capacity and power consumption in includes booster heater operation at 208 230V Pipe size Operating range Indoor intake air temperature Outdoor intake air temperature Maximum 95 FDB 71 FWB
37. thermistor reads 79 F 82 F with thermostat ON the compressor will operate for 4 more min utes and then stop for 3 minutes If the room temperature thermistor reads 75 F 79 F with thermostat ON the compressor will operate for 2 more min utes and then stop for 3 minutes the room temperature thermistor reads below 75 F with thermostat ON the compressor will stop for 3 minutes If the thermostat is OFF regardless of room temperature the compressor will stop for 10 minutes Coil frost protection Coil frost protection in DRY operation is the same as in COOL operation Coil frost prevention Coil frost prevention does not operate in DRY operation 2 Indoor fan control The indoor fan runs on LOW speed during compressor operation The fan speed cannot be changed with the remote con troller Also the indoor fan does not run during compressor OFF 3 Auto vane 8 drain pump controls Same as in COOL operation 4 Detecting abnormalities in the outdoor unit An abnormality in the outdoor unit can not be detected in DRY operation OC193 34 pee 2 3 HEAT operation lt How to operate gt Press POWER ON OFF button Me SLIM Qovor o Press the MODE button to display HEAT mm gt Press the SET TEMP button to set the desired temperature NOTE The set temperature changes 2 F when the SET TEMP button is pressed one time Heating 63 to 82 F lt Display in HEAT operation gt DEFROST Th
38. 0 200 REMOTE CONTROLLER BOARD T7W E01 713 REMOTE CONTROLLER BOARD PAR JH250KUS T7W 351 077 REMOTE CONTROLLER COVER T7W E03 049 REMOTE CONTROLLER COVER R01 172 095 SCREW CAP T7W 556 305 REMOTE CONTROLLER CABLE 39ft T7W A00 305 REMOTE CONTROLLER CABLE 33ft OC193 61 24 FAN amp HEATER PARTS PCH24EK1 PCH30EK1 EM ircuit Recom Specifications Remarks DER mended Drawing No Symbol Q ty Parts No Parts Name T7W 051 762 FAN MOTOR VBO90CE MF R01 811 105 RUBBER MOUNT R01 700 116 JOINT SHAFT R01 29J 116 JOINT SHAFT R01 G12 100 FAN SHAFT R01 621 103 SLEEVE BEARING R01 055 110 CASING SET T7W E02 110 CASING SET R01 G18 114 SIROCCO FAN T7W E00 114 SIROCCO FAN T7W 503 300 ELEMENT _ 240V 700W H T7W 051 300 ELEMENT _ 240V 900W H T7W 507 300 ELEMENT _ 2400 900W 3 H R01 046 700 HEATER THERMAL SWITCH i 26H R01 046 706 THERMAL FUSE 196 F 250V 15A FS R01 W58 706 THERMAL FUSE 230 F 250V 16A FS T7W 23J 706 THERMAL FUSE 230 F 250V 16A FS R01 JO7 202 ROOM TEMPERATURE THERMISTOR RT1 TH1 R01 921 202 INDOOR COIL THERMISTOR RT2 T7W E17 202 PIPE TEMPERATURE THERMISTOR TH2 T7W 430 480 INDOOR HEAT EXCHANGER T7W 431 480 INDOOR HEAT EXCHANGER T7W 051 529 DRAIN PAN R01 83E 126 PIECE MOTOR R01 G24 145 BEAR
39. 1 Disconnect the lead connector for louver motor at the right side 2 Pull the lower louver forward and unhook the clamps 2 points at the center 3 Remove the front panel white set screws 4 pcs 4 Remove the side box set screws on both side 4 screws on the side and front 1 screw at the bottom on each side 5 The panel assembly can be removed See photo 5 Photo 5 Front panel white set screws nn Front panel assy Side box set screw Connector for louver motor lead OC193 58 OPERATING PROCEDURE PHOTOS 8 Removing the louver motor and vane motor 9 Removing the swing louver Remove only the right side panel to remove these motors 1 Remove setting screws of each motor 2 pcs each total 4 pcs See photo 6 1 Remove the swing louver from the joint on the right side 2 Slide the louver out to the left side Photo 6 Vane motor Side box R Louver motor Support bar Lower louver Side box L 10 11 12 13 Removing the lower louver 1 Pull down and unhook the clasps 3 points 2 Warp the louver to remove Removing the auto vane After removed the lower louver 1 Remove a fixing screw of the left side box and the lover panel 2 Pull the left side box outward 3 Remove the auto vane shaft from the joint 4 Slide the auto vane out to the right side Removing the vane crank The vane crank will be removed easily after removed the
40. 60 70 80 90 Outdoor ambient temperature 86 psi G 80 100 75 70 90 o 80 2 70 60 2 S 50 N 40 30 20 100 110 Data is based on the condition of outdoor humidity 75 A point on the curve shows the reference point lt Heating mode gt psi G 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 Condensing pressure PCH24EK1 lt 75 45 70 ow 65 x lt CY S 20 25 30 35 40 45 50 55 60 65 70 DB F Outdoor ambient temperature psi G 80 70 60 50 40 30 Suction pressure 20 10 PCH24EK1 Indoor DB temperature F T 40 50 60 70 80 90 Outdoor ambient temperature PCH24EK1 75 65 20 25 30 35 40 45 50 55 60 65 70 DB F OC193 13 Outdoor ambient temperature 86 80 75 70 Data is based on the condition of indoor humidity 50 Air flow should be set at HI A point on the curve shows the reference point lt Cooling mode gt psi G 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 Condensing pressure
41. AC 715AD is an optional part Other parts are on the market A To start all units in order by remote ON OFF switch B To stop all units simultaneously by remote ON OFF switch C To switch from the remote ON OFF control and the individual remote control 4 1 System Figure 6 shows the case of three units as an example The same is the case with any number of units Figure 6 Power supply of control circuit Timer adapter N PAC 715AD fos Relay box 4L 2 wire et Timer adapter cables cable Remote Remote ON OFF controller switch OC193 53 NOTE1 Install the relay box where you can be serviced easily NOTE2 For control circuit wiring use a wire of No 14 AWG or a control cable according to the power supply of control circuit NOTES When the power supply of the control circuit is 208 230V AC Do not connect the control circuit wire to the remote controller cable directly Do not place the control circuit wire and the remote controller cable into the same conduit tube 4 2 Basic wiring Caution Before starting all units simultaneously by the remote ON OFF switch be sure to connect a sequence start timer into the r
42. DE Gees Indoor fan OFF ON e We Auto vane OFF minutes L 1 Drain pump ON r OFF i ON OFF Booster heater OFF M M V M SYK 7 K K Z Z Z ZSS Z ZB G _D ON Compressor OFF ___ L EE Minimum 3 minutes 1 I 1 Even if the room temperature rises above the set temperature during this period the compressor will not start until this period has ended 1 Compressor control D 3 minute time delay To prevent overload the compressor will not start within 3 minutes after stop The compressor runs when room temperature is higher than set temperature The compressor stops when room temperature is equal to or lower than the set temperature The compressor maintains the previous state when the room temperature minus the set temperature is 0 F or more or lower than 2 F The compressor stops in check mode or during protective functions OC193 33 The compressor will not start when the room temperature is 64 F or below The compressor starts intermittent operation when the power is turned ON with room temperature above 64 F The com pressor ON OFF time depends on the thermostat ON OFF and the following room temperatures After 3 minute compres sor operation if the room temperature thermistor reads above 85 F with thermostat ON the compressor will operate for 6 more min utes and then stop for 3 minutes If the room temperature
43. ING SUPPORT R01 20J 303 INSULATOR R01 30J 303 INSULATOR OC193 62 PCH36EK PCH42EK FAN amp HEATER PARTS PCH36EK1 42 1 Parts No Parts Name Specifications Drawing No Remarks Circuit Diagram Symbol Recom mended Q ty T7W 055 762 FAN MOTOR KVB152CC MF R01 560 105 RUBBER MOUNT R01 700 116 JOINT SHAFT R01 29J 116 JOINT SHAFT R01 G24 100 FAN SHAFT R01 705 103 SLEEVE BEARING R01 G18 114 SIROCCO FAN T7W E00 114 SIROCCO FAN R01 G24 114 SIROCCO FAN T7W E01 114 SIROCCO FAN R01 055 110 CASING SET T7W E02 110 CASING SET T7W 509 300 HEATER ELEMENT 240V 1000W H R01 046 700 HEATER THERMAL SWITCH 8 FF 1087 N 80 26H R01 986 706 THERMAL FUSE 219 F 250V 10A FS R01 W58 706 THERMAL FUSE 230 F 250V 16 FS T7W 23J 706 THERMAL FUSE 230 F 250V 16 FS R01 J07 202 ROOM TEMPERATURE THERMISTOR RT1 TH1 R01 J21 202 INDOOR COIL THERMISTOR RT2 T7W E17 202 PIPE TEMPERATURE THERMISTOR TH2 T7W 432 480 INDOOR HEAT EXCHANGER T7W 433 480 INDOOR HEAT EXCHANGER T7W 055 529 DRAIN PAN RO1 830 126 PIECE MOTOR R01 G24 145 BEARING SUPPORT R01 20J 303 INSULAT
44. OC193 9 2 HEATING CAPACITY Models Outdoor intake air WB temperature Airflow IDB CFM 35 45 5 Auxiliary heater ov CA PC CA CA PCH24EK1 75 31 2 70 32 1 65 PCH30EK1 75 70 65 PCH36EK1 75 70 65 PCH42EK1 75 70 65 Notes 1 108 Intake air dry bulb temperature CA Capacity x10 Btu h PC Power Consumption kW 2 When booster heater is on total capacity and total power consumption should be added the figures described in booster heater column Booster heater ON When the set temperature is higher than the room temperature by more than 5 4 deg Booster heater OFF When the set temperature is higher than the room temperature by less than 3 6 deg 3 Heating capacity correction factors Models Refrigerant piping length one way Less than 100ft 100 1308 130 1648 PCH24EK1 1 00 0 995 0 990 PCH30EK1 1 00 0 995 0 990 PCH36EK1 1 00 0 995 0 990 PCH42EK1 1 00 0 995 OC193 10 0 990 2 PERFORMANCE CURVE NOTES A point on the curve shows the reference point PCH24EK1 COOLING CAPACITY PCH24EK1 HEATING CAPACITY SHF 0 73 Not include booster heater 1 9kW 65 w w
45. OR RO1 30J 303 INSULATOR OC1 93 63 PCH24EK PCH30EK STRUCTURAL PARTS PCH24EK1 PCH30EK1 OC193 64 EM O Part number that is circled is not shown in the figure Specifications Remarks Dem Drawing No Symbol Q ty 2 o Parts No Parts Name R01 055 662 SIDE PANEL LEFT R01 055 661 SIDE PANEL RIGHT 051 651 FRONT PANEL UPPER R01 045 652 FRONT PANEL LOWER R01 045 048 LOUVER SUPPORT R01 051 669 LOWER PANEL 029 691 INTAKE GRILL R01 A25 500 AIR FILTER R01 055 501 AIR FILTER SUB T7W 051 501 AIR FILTER R01 029 061 GRILL HINGE R01 029 054 CATCH GRILL T7W 052 676 REAR 8 TOP PLATE R01 051 001 FRONT GRILL R01 045 003 SWING LOUVER R01 029 089 LOWER LOUVER LEFT R01 029 088 LOWER LOUVER RIGHT R01 045 090 LOWER LOUVER MIDDLE R01 029 086 FRONT LOUVER LEFT R01 029 085 FRONT LOUVER RIGHT R01 045 087 FRONT LOUVER MIDDLE R01 051 002 AUTO VANE R01 055 068 SIDE BOX LEFT R01 055 067 SIDE BOX RIGHT R01 029 222 LOUVER MOTOR T7W E01 222 LOUVER MOTOR T7W 029 223 VANE MOTOR R01 029 060 VANE R01 045 808 LEG R01 82E 656 FILTER GUIDE oj ojo JOIN k mk k k i A al RAIN h h d ajm al ee p IN b lt A IND lt lt
46. POWER TH2 a o 5 gt a 8 ERS lt c z LB n 9W2 SW5Swe 51 SW3 OFF N Ens CN51 CN27 LOSSNAY ON N50 N20 CN21 654321 4321 4321 10987654321 4321 DRAIN INTAKE PIPE INDOOR UNIT TO HEATER TRANS Rugg RU AM pu 2 ORN YLW TO OUTDOOR UNIT CONNECTING WIRES sa ES gt A 2680 r 11 ES POWER SUPPLY ED 208 230V 60Hz 1 PHASE ZE BLK GRN _ GROUND NOTES 1 Since the indoor transformer T is connected with 230V power if 208V power is used change the wiring connection in the following procedure Indoor side transformer T for 208V YELLOW 208V RED 230V YELLOW Indoor fan MF for 208V BLACK 208V BLACK 230V YELLOW 2 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing 3 Indoor and outdoor connecting wires are made with polarities make wiring matching terminal 4 Symbols used in wiring diagram above are Terminal block connector _ PC board insertion tab 5 Emergency operation If a trouble occurs with either the remote controller or the indoor microcomputer and no other trouble exists emergency operation for cooling or heating can be performed by changing the setting of dip switch SW3 I B on the indoor controller board emerg
47. ROLLER SW2_ SW5 SW6 SW1 SW3 CN2L MMM mum SIT LOSSNAY ON CN50 GN20 CN21 J 654321 4321 4321 10987654321 DRAIN INTAKE PIPE REMOCON POWER CN40 LT TO REMOCON OUTDOOR HEATER CN22 30 CN24 TRANSMISSION WIRES DC12V INDOOR UNIT TO OUTDOOR UNIT CONNECTING WIRES DC12V polar POWER SUPPLY 208 230V 60Hz 1 PHASE GRN PCH36EK onl TEE C 1 GROUND ES NOTES 1 Since the indoor transformer T is connected with 230V power if 208V power is used change the wiring connection in the following procedure Indoor side transformer T for 208V YELLOW 208V RED 230V YELLOW Indoor fan MF for 208V BLACK 208 BLACK 230V YELLOW 2 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing 3 Indoor and outdoor connecting wires are made with polarities make wiring matching terminal 4 Symbols used in wiring diagram above are Terminal block connector PC board insertion tab 5 Emergency operation If a trouble occurs with either the remote controller or the indoor microcomputer and no other trouble exists emergency operation for cooling or heating can be performed by changing the setting of dip switch SW3 I B on the indoor controller board emergency dry operation is not possible OC193 24 9 OPERATION FLOW CHART
48. are a number of reasons for this first costly troublesome duct installation is eliminated second the overall air conditioning balance is excellent and third operation cost is low since flex ible control of each unit is possible This system control was developed exclusively by Mitsubishi in the light of this demand Microprocessor control makes possible individual control group control control using two remote controllers remote on off control and individual control without troublesome modifications to the equipment 1 Individual Control by Gathering Remote Controllers A Series PCH FK unit is installed in each room and the remote controller are gathered together in separate location where each unit is controlled individually Each remote controller is connected to its indoor unit by non polar 2 wire cable to eliminate the possibility of mis wiring Separation can be as much as 550 yards making this type of control extremely easy to implement Thermistors in the indoor unit maintain each room at its own individually set temperature OC193 3 2 Group Control by a Single Remote Controller In an application requiring a number of air conditioner units in a large area on a single floor up to 50 units can be centrally controlled using a single remote controller The remote controller controls Power ON OFF set temperature fan speed swing louver ON OFF timer and auto vane position of all units of the group Obviously if all the units
49. auto vane Removing the front louver 1 Pull and unhook the louver toward you Clasps are 5 pcs Photo 7 Vane motor set Louver motor Thermistor screws Set screws check plate sat screw Thermistor Side plate S Side box Lower louver Right Front Panel lower Photo 8 Swing louver Auto vane Vane crank Side box left Front panel lower 0C193 59 2 Pull out the room temp thermistor from the casing A See photo 9 3 Loose the shaft joint set screws 2 pcs with a hexagonal wrench size 3mm 4 Unhook the casing A by pushing 2 points for each side 5 Open about half of the casing A and take it out 6 Loose the fixing band set screws 1 pcs on the both sides of the fan motor 7 Remove the fixing bands 8 Take out the fan motor Photo 8 Casing B Shaft joint Casing A EE A Casing C Support bar Electrical box Fan motor OPERATING PROCEDURE PHOTOS 14 Removing the fan motor After remove the electrical box covers Photo 9 1 Disconnect the lead connector for fan Fan motor Casing A Fixing bands y Room temp thermistor Casing clamps Photo 10 Sirocco fan A Fixing bands 15 Removing the room temperature thermistor After removed the electrical box covers 1 Pull out the room temperature thermistor from the casing A 2 Disconnect the connector CN 20 from the controller board in the electrical box 3 Take out the
50. ble such as Belden 9407 and the cable thickness must be No 22 AWG or above When gathering the power ON OFF switches of air conditioners near the remote controllers you should also install the power ON OFF switch near each unit to prevent electric trouble in servic ing edd Remote controller OC193 54 O 6 MULTIPLE REMOTE CONTROL DISPLAY You can control several units by a multiple remote control display if you wire an optional multiple display adapter PAC 725AD with relays and lamps on the market 6 1 How to wire 1 Connect the multiple display adapter to the connector CN51 on the indoor controller board 2 Wire three of the five wires from the multiple display adapter as shown in the below figure lt Wiring gt RL 5 GREEN 1 0 9 PI 2 51 YELLOW 09 Rower ORANGE Pla Ra ME RR connector 5P RED _ nS BROWN Electrical insulation is needed Optional multiple display Wiring at the actual place adapter The maximum distance between indoor board and relay is 33 feet lt System gt Power 3wires W supply 3wires 3wires MW 2wires Not unit No 2 unit No 3 unit CJ lt UE T Relay box Field supply
51. butor Capillary tube 40 157x40 070x15 7 PCH36EK1 40 157x40 094x21 7 PCH42EK1 40 157 40 094 25 6 OC193 22 10 WIRING DIAGRAM MODEL PCH24EK1 WIRING DIAGRAM SYMBOL NAME SYMBOL NAME SYMBOL NAME FAN MOTOR CAPACITOR ML LOUVER MOTOR SW17 lt R B gt ADDRESS SELECTOR SWITCH CN1 lt R B gt PROGRAM TIMER CONNECTOR MV VANE MOTOR SW18 lt R B gt FUNCTION SELECTOR SWITCH CN2 lt R B gt REMOTE SWITCH CONNECTOR REMOTE CONTROLLER BOARD T TRANSFORMER CN27 lt l B gt DRAIN UP MECHA CONNECTOR TH1 ROOM TEMPERATURE TB1 6 TERMINAL BLOCK CN51 lt I B gt CENTRALLY CONTROL CONNECTOR THERMISTOR 32 F 15kQ 77 F 5 4kQ 2 lt 1 gt _ LOUVER MOTOR RELAY CN2L lt I B gt LOSSNAY CONNECTOR TH2 PIPE TEMPERATURE X3 lt I B gt _ VANE MOTOR RELAY F lt l B gt FUSE 6A THERMISTOR 32 F 15kQ 77 F 5 4kQ X4 lt l B gt FAN MOTOR RELAY FS THERMAL FUSE 196 F 15A SW1 lt l B gt MODEL SELECTOR SWITCH X5 lt I B gt FAN MOTOR RELAY H HEATER ELEMENT SW2 lt l B gt ADDRESS SELECTOR SWITCH X6 lt l B gt FAN MOTOR RELAY INDOOR CONTROLLER BOARD SW3 lt l B gt EMERGENCY OPERATION SWITCH ZNR VARISTOR LS LIMIT SWITCH SW5 I B MODEL SELECTOR SWITCH 26H HEATER THERMAL SWITCH MF FAN MOTOR INNER THERMOSTAT SW6 lt l B gt MODEL SELECTOR SWITCH 88H HEATER CONTACTOR REMOTE CONTROLLER REMOCON
52. c dry Dehumidify automatic and heating modes SET TEMPERATURE button This sets the room temperature The temperature setting can be per formed in 2 F units Setting range Cooling Heating 65 F to 87 F 61 F to 83 F time start time and stop time CLOCK TIMER button This sets or switches the current FAN SPEED button This sets the ventilation fan speed MITSUBISHI Qovorr o NENTRALLY CONTROLLED DRY timer ore FER crock auro Aro AUTO ga A ser TEMP sum op AN u E STAND BY E DEPPOST 58 98 8 NOT AVAILABLE L EL MODE ON OFF CLOCKTIMER FAN SHEED AIR DISCHARGE FILTER TIMER SET REMOTE CONTROLLER C PAR JH250KUS AIR SWEEP CHECK TEST RUN ON OFF button This switches between the opera tion and stop modes each time it is press The lamp on this button lights during operation AIR DISCHARGE button This adjusts the vertical angle of the ventilation FILTER button This resets the filter service indica tion display AIR SWEEP button This switches the horizontal fan motion Swing louver ON and OFF CHECK TEST RUN button Only press this button to perform an inspection check or test operation Do not use it for normal operation
53. clock adjust ment charge of week day daily and weekly timer setting Push SW to advance the time Each time the button is pushed the time advance by 1 minute pushing continuously advances by 1 minute at 0 5 second interval and when the lower digit of minute becomes 0 indication advances in 10 min utes unit co SW is used for reversing the time Each time the button is pushed the time reverses by 1 minute pushing continuously reverses the time by 1 minute at 0 5 second interval and when the lower digit of minute becomes 0 indication reverses in 10 minutes unit OC193 69 Pushing lt gt SW moves the week day light display in order of S gt M gt T gt W enabling to set the week day SUI a MITSUBISHI ELECTRIC CORPORATION Copyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jun 2001 No OC255 REVISED EDITION B 20 Distributed in Mar 2001 No OC255 REVISED EDITION A 20 New publication effective 07 2001 Distributed in Dec 2000 No OC255 Specifications subject to change without notice Printed in Atlanta 01 01 MITSUBISHI ELECTRIC HVAC Advanced Products Division 3400 Lawrenceville Suwanee Road e Suwanee Georgia 30024 Toll Free 800 433 4822 e Toll Free Fax 800 889 9904 www mrslim com Specifications are subject to change without notice
54. dels OC193 42 O SW1 6 Switch for set temperature adjustment in heating mode During heating operation warm air collects near ceiling When indoor unit is installed near ceiling temperature read by room temperature thermistor and temperature near floor differ by about 7 deg Therefore set temperature of the indoor unit must be adjusted 7 deg higher than set temperature of remote controller OFF 7 deg higher adjustment ON No adjustment SW1 7 Switch for fan speed during thermostat OFF in heating mode OFF Low ON Extra low SW1 8 Switch for fan speed during thermostat OFF in heating mode OFF Fan speed depends on SW1 7 ON Fan speed depends on remote controller SW1 9 Switch for outdoor unit abnormality detection OFF When abnormality occurs it is detected ON Even if abnormality occurs it is not detected SW1 10 Switch for AUTO RESTART FUNCTION OFF This function does not work This function works 2 SW2 Address selector 654321 OFF ON Use SW2 to set unit address for group control 3 SW3 Emergency operation switch Normal operation For emergency cooling For emergency heating initial setting 4321 4321 4321 ON aim ON mu 4 SW5 Model selector 4 3 2 1 OFF ON SW5 1 OFF For models without automatic swing mechanism ON For models with automatic swing mechanism SW5 2 OFF For models with heating mode and cooling mode including series PCH ON For models with only cooling
55. displayed on the remote controller does not apply to any unit power is not supplied to the unit Signal transmitting receiving circuit is abnormal 4 Check and repair the unit according to the check code Refer to page OC193 46 OC193 45 cheeks Diagnosis of malfunction Cause Check points EO Signal transmitting receiving During individual unit control 1 Check the transmission wire error 1 Bad contact of transmission 2 Check with another remote controller If EO is Indoor controller does not wire still indicated replace the indoor controller respond to remote controller 2 Signal transmitting receiving cir board signal cuit is abnormal If other check code appears replace the former remote controller P1 Abnormality of room temper 1 Bad contact of thermistor 1 Check the thermistor ature thermistor RT1 2 Damaged thermistor 2 Measure the resistance of the thermistor If normal it should be as follows 2 15 86 F 4 3kQ 5O F 9 6kO 104 F 3 0 68 F 6 3kQ P2 Abnormality of indoor coil If normal replace the indoor controller board thermistor RT2 Signal transmission error 1 Bad contact of transmission 1 Check the transmission wire Remote controller does not wire 2 Check with another remote controller respond to indoor controller 2 Signal transmitting receiving cir If P3 is still indicated replace the indoor signal cuit is
56. e DEFROST symbol is only displayed during the defrost opera tion STANDBY The STANDBY symbol is only displayed from the time the heating operation starts until the heated air begins to blow NU Aer ESTRUM HEAT operation time chart gt Operation starts by Room temperature Room temperature Operation stops by POWER button becomes equal to falls below set tem POWER button ON set temperature perature OFF ON Thermostat Z OFF Extra LOW x 1 LOW Extra LOW 1 x x1 Changeable Extra LOW or LOW ON ee by indoor dipswitch SW1 5 and f LOW or HIGH LOW or HIGH ndoor fan OFF SW1 6 Depends on remote Depends on remote ON Horizontal controller setting Horizontal controller setting T uto vane OFF ON Drain pump OFF OFF during thermostat OFF Booster heater en hot adjustment OFF defrosting Hot adjustment Hot adjustment ON Compressor OFF HE Minimum 3 minutes 2 ON Power ON lamp From POWER ON until 1 me gt warm begins to blow ON a I OFF STAND BY lamp X2 Even if the room temperature falls below the set temperature during this period the compressor will not start until this period has ended OC193 35 1 Compressor control 3 minute time delay To prevent overload the compressor will not start with
57. e cooling operation starts the horizontal discharge is automatically set However the desired discharge among four modes below listed can be selected with the AIR DIS sRemote controller display gt CHARGE UP DOWN button on the remote controller I O 0100 horizontal discharge x 60 downward and 40 horizontal discharge p 80 downward and 20 horizontal discharge M 100 downward discharge p NOTE Discharge is available only when the fan speed is HIGH UA lt AUTO RETURN gt When discharge continues for 1 hour with the fan speed at LOW the discharge a direction turns to the horizontal discharge automatically 7 NOTE1 After that the discharge or is available by setting with the remote controller UMA and it continues for 1 hour 3 NOTE2 If the discharge direction changes from or the direction returns to the hor 1 1 izontal discharge when 1 hour has passed since the discharge 3 started Changes by pushing the NOTES If the discharge direction changes from 3 or to the horizontal discharge the AIR DISCHARGE 1 hour timer to return the horizontal discharge is canceled at that time UP DOWN button 3 During heating operation When the heating operation starts the same discharge direction as was set last time is chosen automatically However the desired discharge can be selected from among four modes above mentioned with the remo
58. e location of the fault If the check switch is pressed twice the unit stops operating and the check mode is initiated The cause of the most recent problem stored in the memory is displayed on the LCD This is extremely useful for maintenance purposes 5 Useful Memory Feature for Storing Instructions The previous set value is memorized so that constant temperature control can be obtained This is convenient when for example a power failure occurs 2 Non polar Two Wire Remote Controller Cables The non polar two wire type remote controller cable is slim installation is simple and trouble free Remote controller wire can be extended up to 550 yards 3 Automatic Cooling Heating Changeover Operation An automatic cooling and heating changeover operation system is provided to ensure easy control and year round air con ditioning Once the desired temperature is set unit operation is switched automatically between cooling and heating in accordance with the room temperature In addition the use of outdoor unit fan speed controller enables cooling operation at outdoor temperature as low as 23 F 2 INNOVATIVE SYSTEM CONTROL BY MICROPROCESSORS The most significant feature of the series PCH EK is the advanced microprocessor system control Behind the development of this system is the recent world wide trend in the air conditioning of larger buildings away from centralized duct systems in favor of a large number of individual split type units There
59. eekly timer setting can be performed During MONITOR is display all switches except SET MONITOR SW are invalidated 24 hours is divided into 48 blocks and each block express 30 minutes The block display consists of 3 pattern Set back 1 2 F 2 4 F 4 8 F 6 12 F 8 16 F MITSUBISHI E SET SET mat E When SET is displayed clock adjustment MONITOR SET BACK SETTING SW Used for set back setting SET MONITOR WEEKLY SETTING SET BACK DAILY ON SETTING ON SET BACK OFF SW This is normal status ON SET BACK idi gt Used to specify the time setting pattern rowe CHC J OJO WEEK DAY SETTING SW 1 DAILY TIMER SW Used for week day setting Used for timer setting in 30 minutes unit MODE SELECTOR SW CLOCK ADJUSTMENT SW WEEKLY TIMER SW Using this switch select MONITOR or SET Mode Used for adjustment of the current time Used for setting timer in day of week unit MONITOR Indicates the current timer set ting All switch expect MODE SELECTOR SW are invalidated then This is the normal status SET Set to SET mode for
60. emote ON OFF circuit Otherwise rush of starting current exert a bad influence upon the power supply kra No 1 unit No 2 unit switch relay box relay box Next unit Glow switch or pilot lamp can be combined to easily identify the on off mode of SW1 and SW2 Remote controller Timer adapter cables 4 3 Switch function of remote ON OFF switch SW2 Switches between remote ON OFF and individual control ON OFF Remote ON OFF control Individual control All units start together x1 WI Individual control is not available Fachunit be conirolled by each remote controller Remote ON OFF switch is not available Switches betweeri All units stop together remote ON and OFF w p together 2 Individual control is not available x1 After all units start together if SW2 is turned OFF each unit can be individually stopped by each remote controller 2 After all units stop together if SW2 is turned OFF each unit can be individually started by each remote controller 5 INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS Grouping the remote controllers allows individual control and cen tralized monitoring of units installed in different places without a Lo special control board Remote control cables can be extended up to 550 yards When the Remote cable length exceeds 39 ft use the double insulated two core controller cable ca
61. ency dry operation is not possible OC193 23 PT MODELS PCH30EK1 PCH36EK1 PCH42EK1 WIRING DIAGRAM SYMBOL NAME SYMBOL NAME SYMBOL NAME FAN MOTOR CAPACITOR LS LIMIT SWITCH SWG lt I B gt MODEL SELECTOR SWITCH CN1 lt R B gt PROGRAM TIMER CONNECTOR FAN MOTOR INNER THERMOSTAT SW17 lt R B gt ADDRESS SELECTOR SWITCH CN2 lt R B gt REMOTE SWITCH CONNECTOR ML LOUVER MOTOR SW18 R B FUNCTION SELECTOR SWITCH CN27 lt l B gt DRAIN UP MECHA CONNECTOR VANE MOTOR T TRANSFORMER CN51 lt l B gt CENTRALLY CONTROL CONNECTOR R B REMOTE CONTROLLER BOARD TB1 6 TERMINAL BLOCK CN2L I B LOSSNAY CONNECTOR TH1 ROOM TEMPERATURE X2 lt l B gt _ LOUVER MOTOR RELAY F lt l B gt FUSE 6A THERMISTOR 32 F 15kQ 77 F 5 4kQ X3 lt l B gt VANE MOTOR RELAY FS THERMAL FUSE 219 F 10A TH2 PIPE TEMPERATURE X4 lt I B gt FAN MOTOR RELAY PCH36EK THERMISTOR 32 F 15kQ 77 F 5 4kQ X5 lt I B gt _ FAN MOTOR RELAY FS THERMAL FUSE 230 F 16A SW1 lt l B gt MODE SELECTOR SWITCH X6 lt I B gt FAN MOTOR RELAY PCH30EK PCH42EK SW2x lt l B gt ADDRESS SELECTOR SWITCH ZNR VARISTOR H HEATER ELEMENT SW3 lt l B gt EMERGENCY OPERATION SWITCH 26H HEATER THERMAL SWITCH INDOOR CONTROLLER BOARD SW5 lt I B gt MODEL SELECTOR SWITCH 88H1 2 HEATER CONTACTOR 87654321 THe SW17 CN2 232 87654321 REMOTE CONT
62. erature becomes equal to set temperature Room temperature rises above set temperature Operation stops by POWER button OFF Thermostat OFF LOW or HIGH ON Indoor fan OFF _ L _ ON Auto vane OFF L _ minutes ON O OFF Drain pump ON i OFF Booster heater OPP ________ Compressor OFF i 1 o 1 1 1 Minimum 3 minutes 1 1 Even if the room temperature rise above the set temperature during this period the compressor will not start until this period has ended 1 Compressor control D 3 minute time delay To prevent overload the compressor will not start within 3 minutes after stop The compressor runs when room temperature is higher than set temperature The compressor stops when room temperature is equal to or lower than the set temperature The compressor maintains the previous state when the room temperature minus the set temperature is 0 degrees or more or lower than 2 degrees The compressor stops in check mode or during protective funciions Coil frost prevention To prevent indoor coil frost the compressor will stop when the indoor coil thermistor RT2 reads 34 F or below after the compressor has been continuously operated for at least 16 minutes or more When the indoor coil temperature rises to 50 F or above the compressor will start in a 3 minute 2 time delay 2 When the indoor coil temperature is 30 F or less t
63. ergency operation because the drain may overflow lt How to operate gt 1 For emergency cooling set the dip switch SW3 1 to ON and SW3 2 to OFF For emergency heating set the dip switch SW3 1 2 to ON SW3 setting emergency emergency normal heating cooling operation microprocessor board 2 Turn ON the outdoor unit breaker and then turn ON the indoor unit breaker Emergency operation will now start 3 During emergency operation the indoor fan operates on high speed the auto vanes do not operate 4 To stop emergency operation turn OFF the indoor unit breaker 5 Movements of the vanes do not work in emergency operation therefore you have to slowly set them manually to the appropriate position NOTE The remote controller POWER ON OFF button can not start stop emergency operations CAUTION Do not use emergency cooling for more than 10 hours as the indoor coil may freeze OC193 41 O 3 DIP SWITCH FUNCTIONS Each figure shows the initial setting by factory 3 1 On remote controller board 1 SW1 sy selector 7654321 OFF ON SW17 1 6 Switch for address setting SW17 7 When two remote controllers are used this switch sets the controller function OFF The remote controller is set as a main controller ON The remote controller is set as a sub controller SW17 8 Switch for system back up This switch is not available for series PCH 2 SW18 Model selector 87654321 OFF ON SW18 1 Switch
64. ers dur ing the day and stopped together at the end of business 3 REDI CHARGED REFRIGERANT SYSTEM When refrigerant tubing is 100ft or less it is unnecessary to charge additional refrigerant This can contribute to enhance installation quality and reduce installation time 4 MAXIMUM COMFORT AIR CONDITIONING 1 Auto Angle Airflow for Comfortable Air Conditioning PCH units offer a choice of airflow outlets a horizontal one and a downward pointing one and they incorporate auto angle vanes which can be used independently by means of microprocessor control This has led to the development of a new auto angle airflow function and has made it possible to obtain the most comfortable forms of heating and cooling to suit the requirements of all kinds of rooms When operating in the heating mode the vanes automatically set the downward direction of hot air at an angle of 70 When cooling they are set at 0 so that 100 horizontal airflow is achieved Altogether four directions of airflow can be selected by remote control 100 downward airflow 80 downward airflow plus 20 horizontal airflow 60 downward airflow plus 40 horizontal airflow and 100 horizontal airflow When the fan speed is on low during cooling only three types are available 100 and 80 downward airflow and 100 horizontal airflow 2 Swing Flow Louvers The swing Flow Louvers automatically change the air flow direction for desir able air distribution 3 Fre
65. ew of the side panel LEFT r 4 Pull out the panel toward you to remove IE 3 Removing the lower panel 1 Remove the lower panel set screws 2 pcs on each side and 3 pos at the rear total 7 pcs PCH24EK has 4 pcs at the rear and 2 pcs on each side total 8 pcs 4 Removing the electrical box Photo 1 1 Remove the air intake grille Refer to 1 2 Remove the support bar set screw and remove the bar See figure 4 3 Loose the lead clamps 2 pcs for the sirocco fan and the louver motor See photo 1 Electrical box Clamps for fan lead OC193 56 OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 4 Remove the electrical box set screws 2 pcs Pull down the electrical box and hang it from the rear panel using the Figure 5 S hooks located on the both sides of the box 5 The electrical box has two covers R and L Remove the 2 screws on the cover R and remove the screw on the cover L Then remove the box corners 6 This enables checking the inside of the electrical box See figure 6 Indoor controller board 1 B Transformer Fan capacitor C1 Fuse Terminal block Power Terminal block Control Terminal block Remote controller F U EJ W i Electrical box Box cover set screws 3 pcs Set screws 2 pcs Figure 6 Fan lead wire ih A mm Tra
66. f B 3480kQ 2 30 Rt 15exp 3480011 8 273 t 32 1 8 273 E 324 15kQ 8 50 9 6kQ 20 68 F 6 3 77 5 20 86 _ 43 104 F 3 0 4 14 32 50 68 86 104 122 Temperature F OC193 50 12 SYSTEM CONTROL 1 VARIETY OF SYSTEM CONTROL FUNCTIONS Group control by a single remote con troller See page OC193 52 pm i Unit Remote controller Unit Unit A number of units installed at different locations can be started and controlled with a single remote controller The remote controller can be mounted in a different location using a non polar two wire cable which can be extended up to 550 yards A maximum of 50 units are controllable by a single remote controller All units operate in the same mode n Control using two remote controllers Two remote controllers can be used to control either one unit or several units in group control This enables to con See page trol units with ease either from a distance or close rang OC193 53 Unit Unit Unit Units operate according to the latest command from either
67. for timer mode setting OFF Single day ON Timer every day SW18 2 Switch for filter sign display OFF Filter sign absent ON Filter sign present SW18 3 Switch for filter sign time setting OFF 100Hr ON 2500Hr SW18 4 Switch for temperature unit OFF C Celsius ON F Fahrenheit SW18 5 Switch for HEAT display OFF HEAT display present ON HEAT display absent SW18 6 Switch for auto vane display OFF Auto vane display present ON Auto vane display absent SW18 7 Switch for swing display OFF Swing display present ON Swing display absent SW18 8 Switch for louver display OFF Louver display present Louver display absent 3 2 On indoor controller board 1 SW1 Mode selector 10987654321 OFF ON SW1 1 SW1 2 SW1 3 SW1 4 SW1 5 Switch to change over between FAN mode and AUTOMATIC COOLING HEATING CHANGE OVER mode OFF Fan mode for cooling only models ON AUTOMATIC COOLING HEATING CHANGE OVER mode for heat pump mode including PCH Switch to change over louver display OFF Swing ON Rotary Switch for auto vane OFF Unit without vane ON Unit with auto vane Switch for drain pump OFF The drain pump works in only cooling mode ON The drain pump works in both cooling and heating mode For heat pump models Switch to change the temperature to start coil frost prevention OFF 36 F For previous special models ON 34 F For all current mo
68. hanges in 1hour units m showing remaining time De nni AUTO Zu 2 7 Test run Before test run gt After installing wiring and piping the indoor and outdoor units check for refrigerant leakage looseness in power supply or control wiring and mistaken polarity Use a 500 volt measure to check the resistance between the power supply terminal block and ground to make sure that it is at least 1 0MQ Attention Do not use the air conditioner if resistance is less than 1 0MQ How to operate gt 1 Turn ON main breaker WEES mcsum 2 Press TEST RUN button twice TEST RUN is displayed EE ES remote controller 3 Select COOL with MODE button to check that cool air is qL D 00 2 00 2 beginning discharged DE s a Select HEAT with MODE button to check that warm air is COCOCOCOCOO beginning discharged after a while coco Sa 4 Select LOW HIGH with FAN SPEED button to check that the fan TIMER SET FEST RUI speed changes properly Press AIR DISCHARGE button to check auto vane operation Check outdoor fan operation Check compressor operation referring to the indoor coil temperature code displayed on the remote controller 8 After checking press the ON OFF button REMOTE CONTROLLER PARJH AOKUS ND A TEST RUN button
69. he compressor starts in 6 minutes NOTE By turning OFF the dip switch SW1 3 on indoor controller board the start temperature of coil frost prevention changes from 34 F to 36 F OC193 30 eee Coil frost protection When indoor coil temperature becomes 5 F or below coil frost protection will proceed as follows lt Start condition gt After the compressor has been continuously operated for 3 minutes or more and the indoor coil temperature has been 5 F or below for 3 minutes the coil frost protection will start lt Coil frost protection gt Compressor stops for 6 minutes and then restarts If the start condition is satisfied again during the first 10 minutes of compressor operation both the indoor and outdoor units stop displaying a check code of P6 on the remote controller lt Termination conditions gt Coil frost protection is released when the start condition is not satisfied again during the allowance or when the COOL mode stops or changes to another mode 2 Indoor fan control Indoor fan speed LOW HIGH depends on the remote controller setting However if an outdoor unit abnormality is detected the indoor fan speed will be LOW regardless of the remote controller setting i Fan speed LOW HIGH depends on the remote controller setting regardless of the thermostat ON OFF ii Fan speed will remain on LOW if an abnormality in outdoor unit is detected 5 minutes NOTE Fan stops immediately if the unit stops or the
70. he temperature difference is still in RANGE C the outdoor unit is determined to be abnormal When RANGE B does not change to RANGE A after 20 minutes have passed since RANGE C had outdoor unit is determined to be abnormal iii During compressor OFF Not detecting abnormalities 6 Indoor coil temperature abnormality detection An abnormality can be detected during compressor ON except for the following For the first 30 minutes after the temperature difference between the indoor coil temperature and room temperature enters the RANGE C e When the temperature difference enters the RANGE C until it moves to the RANGE B 7 Defrosting operation After the outdoor unit starts the defrosting operation when the temperature difference between the indoor coil temperature and room temperature gets out of RANGE A and into RANGE B the indoor unit starts the defrosting mode After the out door unit stops the defrosting operation when the temperature difference returns to the RANGE A the indoor unit stops the defrosting mode While the indoor unit is in the defrosting mode the indoor fan and the booster heater stop x1 RANGE A Indoor coil temperature is more than 9 degrees above room temperature RANGE B Indoor coil temperature is within 9 degrees either way of room temperature RANGE C Indoor coil temperature is more than 9 degrees below room temperature Indoor coil temperature minus room temperature degree RANGE A 0
71. in 3 minutes after stop The compressor runs when the room temperature is lower than the set temperature The compressor stops when the room temperature is equal to or higher than the set temperature The compressor stops in check mode or during protective functions Overheat protection lt Start condition gt When the indoor coil thermistor reads 158 F or above the overheat protection will start lt Overheat protection gt The compressor stops for 6 minutes and then restarts If the start condition is satisfied again within 10 minutes of compressor operation both the indoor and outdoor units stop displaying a check code of P6 on the remote controller lt Termination conditions gt Overheat protection is terminated when the start condition is not satisfied again during the allowance 10 minute compres sor operation when operation mode changes to other mode or when thermostat turns OFF 2 Indoor fan control a Normal control i The indoor fan runs on EXTRA LOW speed during the thermostat OFF EXTRA LOW speed can be changed to LOW or HIGH speed by setting the dip switch SW1 5 and SW1 6 If the indoor coil temperature becomes more than 5 degrees below the room temperature during the thermostat OFF the indoor fan will stop After when the indoor coil temperature becomes within 5 degrees of room tempera ture the indoor fan will run on EXTRA LOW speed ii Hot adjustment Hot adjustment is a warm up for HEAT operation Start condit
72. in the past 4 Fan runs on low speed for 1 minute in order to remove overheat air x5 The 3 minute 6 minutes heating mode time delay functions after compressor stops 6 FAN or AUTO mode is selected by the indoor dip switch setting 7 In FAN mode fan speed and vane operation depend on the remote controller setting Compressor is OFF OC193 25 COOLING OPERATION COOL operation Four way valve OFF NO Initial COOLING 8 YES Vane initial setting _ Vane 60 deg downward angle 70 deg downward angle YES NO Fan speed LOW YES NO Downward discharge 1 hour YES Vane horizontal airflow x 9 NO Compressor YES thermostat N o Allowance cancel NO d YES 3 minute lt time delay Vane setting notch NO YES 6 minute YES time delay Allowance period NO 6 minute NO 3 minute time delay compressor operation Allowance set YES 10 Col YES prevention NO Coil frost protection 11 YES NO 10 minute compressor operation ES Allowance cancel NO lt min continue YES FAN speed LOW Coll frost YES protection FAN speed YES NO gs N f minute foor col NO elapse lt compressor operation temperature is NO P 50 F or higher YES YES Indoor YES 3 minute is time delay 34
73. inutes later check code P8 appears on remote controller display OFF Outdoor unit stops Igoor Outdoor COOL _ Operation stops 9 minutes later check code P8 appears on 5 remote controller display R 3 OFF _ Operation stops HEAT ON Operation stops 27 minutes later check code P8 appears on remote controller display OFF Outdoor unit stops magor Outdoor COOL _ Operation stops 9 minutes later check code P8 appears on 5 remote controller display OFF Operation stops 9 HEAT ON Operation stops 27 minutes later check code P8 appears on remote controller display OFF Outdoor unit stops ne Outdoor COOL Operation stops 9 minutes later check code P8 appears on remote controller display 2 Hs EJ OFF Operation stops ON Operation stops 27 minutes later check code P8 appears on remote controller display Disconnection between 1 and 1 or 2 COOL OFF Operation stops and 2 ON Operation stops 9 minutes later check code P8 appears on remote controller display OFF Operation stops 4 way valve turns OFF MEAT ON 27 minutes later check code P8 appears on remote controller display Disconnection between 3 and 3 COOL Normal operation OFF Operation stops 4 way valve turns OFF HEAT ON Operation stops 27 minutes later check code P8 appears on remote controller display OC193 47
74. ions The hot adjustment works under any of the following conditions HEAT operation starts Defrosting ends Thermostat turns ON Hot adjustment Initially the indoor fan runs on EXTRA LOW speed When 5 minutes have passed or the indoor coil temperature exceeds 95 F the fan speed changes to LOW 2 minutes later the hot adjustment ends Then the fan speed depends on the remote controller setting iii The indoor fan stops when the indoor coil temperature is within 9 degrees either way of room temperature iv To eliminate the remaining heat the indoor fan runs for the first 1 minute after the booster heater is turned OFF 3 Auto vane control When the heating operation starts the same discharge direction as was set last time is chosen automatically However the desired discharge can be selected from among four modes above mentioned with the remote controller However in the following cases the discharge direction turns to the horizontal discharge despite the setting with the remote controller When the thermostat turns to OFF During defrosting operation with the indoor fan stopped While the indoor fan operates at EXTRA LOW speed in the hot adjustment 4 Booster heater control When the room temperature is 6 degrees below the set temperature the booster heater will turn ON When the room temperature is equal to the set temperature booster heater will turn OFF During the hot adjustment the booster heater will not work
75. ividual Multiple operation operation Remote controller Remote controller controller controller 3 1 How to set SW17 7 1 For the main remote controller turn SW17 7 OFF See Figure 5 2 For the sub remote controller turn SW17 7 ON 3 2 Remote controller LCD indication 1 The same indications always appear on both the main and sub remote con trollers excepting in the timer operations 2 Timer operations can be set with either of the two remote controllers However LCD indication appears only on the remote controller used for timer settings 3 If both remote controllers are set for timer operation with different time set tings the timer operation of shorter remaining time is effective 4 Self diagnostic function is available with either of the two remote controllers If one of the remote controllers is used for the self diagnostic function the other remote controllers displays the check mode If the self diagnostic function is reset by either of the two remote controllers both remote controllers are reset Remote controller Figure 5 Main remote controller 4 REMOTE ON OFF AND INDIVIDUAL REMOTE CONTROLS This method is available to control one unit or any number of units The following operations are available by connecting a relay a timer adapter PAC 715AD and remote ON OFF switch to the system Timer adapter P
76. m a touch of sleek sophistication 8 EASY INSTALLATION Installation is simple thanks to the easy connection refrigerant lines The indoor unit is easy to mount and requires only a minimum of wiring saving your time labor and money 9 HIGH RELIABILITY AND EASY SERVICING In addition to the self diagnostic function units are also equipped with a 3 minute time delay mechanism an auto restart func tion an emergency operation function a test run switch etc to assure high reliability and easy servicing 10 ECONOMICAL AND EFFICIENT OPERATION Mitsubishi exclusive LCD indicators show the temperature selected and the current room temperature This system ensures full protection against excessive cooling The Mitsubishi Electric split type air to air PCH models feature highly precise compressors with large capacity heat exchangers for efficient operation 11 NITROGEN GAS IS CHARGED TO INDOOR UNIT Indoor unit and refrigerant pipes are charged with nitrogen gas N2 instead of R22 before shipment from the factory OC193 5 Remote controller 3 PART NAMES AND FUNCTIONS Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button Remote controller operation buttons TIMER ON OFF button This switches between continuous operation and the timer operation OPERATION MODE button Press this button to switch the cool ing electroni
77. ns former H Louver motor lead wire Capacitor Connector for fan lead Fuse Terminal block Power Terminal block Control Terminal block Remote controller OC193 57 OPERATING PROCEDURE 5 Removing the drain pan After removing the lower panel 1 Remove the drain pan support set screws 2 pcs 2 Remove the louver support set screw See photo 3 3 Remove the drain pan PHOTOS Photo 3 Drain support set screws 2 pcs rain nan w Louver support Heater 6 Removing the booster heater assembly 1 Remove the 3 heater assembly set screws pull out the heater lead wire connecting connector then remove the heater assembly see Photo 3 The above enables to replace the heater assembly parts see Photo 4 2 Booster heater assembly Overheat prevention thermostat Thermal fuse Microprocessor operated thermostat Heater element For broken disconnected heater replace only the heater element of the disconnected section Pull out the lead wire terminals from both ends of the bro ken disconnected heater element Remove the heater element clamping metal fixture screws GPull out the heater element then replace Photo 4 Booster heater assembly Heater element clamping metal fixture Thermal fuse Single phase 1 Heater element Overheat prevention thermostat 7 Removing the front panel assembly After removing the drain pan
78. nute compressor FF timer start 3 minute time delay Compressor amp thermostat ON NO 10 minute compressor OFF NO YES x 13 Compressor ON time set When room temperature is 64 F or below the compressor cannot operate Compressor OFF Compressor ON L 0 x 14 14 Fan STOP Fan speed LOW m Y When room temperature rises over 64 F the compressor starts after a 3 minute time delay 313 x14 Compressor ON time is decided by room temperature Refer to page OC193 33 In dry operation compressor ON makes the fan speed LOW and compressor OFF stops the fan It is not possible to set the fan speed with the remote controller C193 27 HEATING OPERATION Heat operation Initial HEATING YES Vane setting notch Vane initial setting NO YES Heating area YES NO Defrost NO 30 min elaspe YES Defrosting NO Four way valve ON YES Hot adjust Outdoor unit trouble I4 Defrost release 3 minute Auxiliary heater OFF Indoor coil NO thermistor is 140 F gt gt r higher FAN speed NO gt Low notch YES in process YES Compressor ON Compressor YES thermostat Allowance cancel
79. on error between indoor unit and remote controller 1 Connect a sub remote controller Turn circuit breaker ON If the display centrally controlled remains replace the indoor controller board If the display disappears turn the remote controller POWER switch ON and check as follows Remote controller Sub remote controller Malfunction 1 Operating Display EO Display I UM 2 Operating Display _ Operating Display er Malfunction of No Display EQ Display Indoor Unit and Remote Controller Ee Malfunction of 4 No Display Operating Display Esa d cate When remote controller POWER switch is turned to ON operating display appears but disappears soon 1 Short circuit of indoor outdoor connect ing wire 2 Short circuit of transmission wire 3 Short circuit of drain sensor heater cir cuit 4 Wrong operation of remote controller due to noise wave emitted by other appliances 1 2 Check the wire 3 Measure the resistance of the drain sensor connector CN50 If normal the value should be 820 4 Turn the circuit breaker OFF and then turn ON If the remote controller remains abnormal despite the above measures replace the indoor controller board Despite turning POWER switch ON the remote controller display does not appear 1 Damaged remote controller 2 Short circuit of transmission wire 3 Bad contact of indoor CN40 4 CN40 is at
80. ontroller has Centrally controlled is displayed OC193 48 aq Transmission wire has broken Connector is badly con nected Indoor terminal block is badly connected Remote controller ter minal block is badly connected eee 5 How to check the parts Parts name Check points Room temperature Disconnect the connector then measure the resistance using a tester thermistor TH1 Surrounding temperature 50 F 86 F Liquid pipe Normal Abnormal thermistor TH2 4 3kQ 9 6kQ Open or short Refer to the thermistor Vane motor Measure the resistance between the terminals using a tester Surrounding temperature 68 F 86 F White Normal Abnormal Connector 30EK1 36 42EK1 Red Yellow Die 186 2140 140 160Q 140 160Q Open or short Red Orange Red White Fan motor Measure the resistance between the terminals using a tester Relay connector Motor terminal Normal or PCH Abnormal Relay connector 30EK1 36 42EK1 Red Black 45 00 20 40 White Black 44 80 20 79 Open or short Protector OC193 49 lt Thermistor Characteristic graph gt Room temperature thermistor TH1 lt Thermistor for lower temperature gt lower temperature Liquid pipe thermistor TH2 50 40 Thermistor Ro 15kQ 3 Fixed number o
81. oor DB temperature 30 30 40 50 60 70 80 Outdoor ambient temperature 20 90 100 110 DB F Data is based on the condition of outdoor humidity 75 A point on the curve shows the reference point lt Heating mode gt PCH36EK1 psi G 350 340 330 320 310 300 290 XN 280 lt 270 260 RY 250 o 240 ge e 225 sS 65 210 200 190 180 170 160 1 500 25 30 35 40 45 50 55 60 65 70 DB F 75 Condensing pressure Outdoor ambient temperature psi G 80 70 60 50 40 Suction pressure 30 20 10 PCH36EK1 Indoor DB temperature F 30 40 50 60 70 80 90 100 1 10 Outdoor ambient temperature DB F PCH36EK1 75 65 20 25 30 35 40 45 50 55 60 65 70 DB F OC193 15 Outdoor ambient temperature 86 75 70 Data is based on the condition of indoor humidity 50 Air flow should be set at HI A point on the curve shows the reference point lt Cooling mode gt PCH42EK1 PCH42EK1 psi G 100 90 86 80 80 70 Indoor DB temperature F 75 70 60 50 Condensing pressure Suction pressure
82. or Non polar two wire cable maximum length 550 yards gt Signal 12VDC gt Indoor controller board Receives orders from remote controller and tem perature data from indoor unit Processes orders and data Controls indoor and outdoor operation Self diagnostic function System control operation Emergency operation Set by dip switch on indoor controller board Transmits the power to remote controller 123 OOO Polar three wire cable X Outdoor unit Independent Control of Outdoor Unit Compressor protection device working Defrosting START STOP Fan speed control Crankcase heater control ON OFF Self diagnostic function Z gt Compressor and outdoor fan ON OFF Operation mode change COOL HEAT EL lt OUTPUT to outdoor unit OC193 29 2 INDOOR UNIT CONTROL 2 1 COOL operation lt How to operate gt Press POWER ON OFF button anes Press the MODE button to display COOL gt Press the SET TEMP button to set the desired temperature NOTE Set temperature changes 2 F when the SET TEMP button is pressed one time Cooling 65 to 87 F B TESTRUN lt COOL operation time chart gt Operation starts by POWER button ON Room temp
83. ress Master No 1 unit No 2 unit Last unit The unit address also serves as a successive start timer which unit starts each unit at intervals of 1 second If two or more units WIA cable have the same unit address in a group control operation stops ux x E due to system error Be sure to set SW2 correctly following the instructions below Figure 3 1 Each lever of SW2 shows the number as follows Indoor controller board Y SW2 1 1 SW2 4 8 SW2 2 2 SW2 5 16 SW2 3 4 SW2 6 32 2 Total number of levers turned to ON shows the address of the unit If you turn ON SW2 1 and SW2 2 the unit address is set as No 3 3 In this way set from the master unit to the last unit Do not forget to set the master No 0 unit Setting examples nit address 8 start elay In seconds 2 3 Unit control The remote controller can control all units ON OFF temperature air flow and swing louver However the thermostat in each unit turns to ON or OFF individually to adjust the room temperature OC193 52 eee 3 CONTROL USING TWO REMOTE CONTROLLERS Two remote controllers are available for control of either one unit or a group of units Units operate according to the latest com mand from either of the two remote controllers However before operation be sure to set one remote controller for main controller and the other for sub controller using dip switch SW17 7 of the remote controller Ind
84. returns to the hor izontal discharge when 1 hour has passed since the discharge started Changes by pushing the NOTES If the discharge direction changes from to the horizontal discharge the AIR DISCHARGE 1 hour timer to return the horizontal discharge is canceled at that time UP DOWN button iii During the operation OFF the auto vane is in the horizontal position iv When the vane motor is out of order or the connector is badly connected the air discharge display of the remote controller continues OC193 31 4 Detecting abnormalities in the outdoor unit After the compressor has been continuously operated for 3 minutes if the difference between the indoor coil temperature and room temperature is out of RANGE C for 1 minute the indoor fan speed will turn to LOW Five minutes later if the dif ference is still out of RANGE C the outdoor unit is functioning abnormally Thus the compressor stops and check code P8 appears on remote controller RANGE A Indoor coil temperature is more than 9 degrees above room temperature RANGE B Indoor coil temperature is within 9 degrees either way of room temperature RANGE C Indoor coil temperature is more than 9 degrees below room temperature Indoor coil temperature minus room temperature degree RANGE A 9 5 0 RANGE eee RANGE C 5 Drain pump control The drain pump works in COOL or DRY operation When operation stops or
85. sh Air Intake The PCH EK series also has fresh air intake providing more comfortable healthful air conditioning through better ventilation The rear panel has a knock out for the intake of fresh air 5 STABLE COOLING EVEN AT OUTDOOR TEMPERATURES AS LOW AS 23 F MAKES YEAR ROUND AIR CONDITIONING POSSIBLE The microprocessor automatically adjusts fan speed in accordance with outdoor temperature to maintain the coolant at an even condensing temperature The result is smooth efficient cooling even when temperatures outdoors drop as low as 23 F This makes the unit ideal for a wide range of specialized cooling needs such as rooms with many office machines or com OC193 4 6 DRAIN PUNP FOR EASY PIPE CONNECTION Option This mechanism with its capacity to raise drain water 20 above the ceiling line is convenient for removing water and avoid ing piping contact with beams etc Note This can not be mounted in the unit 7 SLIM COMPACT AND SPACE SAVING 1 Space Saving Design Because the PCH EK series indoor units are designed to be suspended from the ceiling valuable floor space and wall surfaces are not used The unit is only 10 1 8 high and 50 7 16 wide PCH24 30EK The outdoor units are also slim line with a depth dimension of only 11 5 8 PUH 24EK 2 Flush To The Wall Installation Since the units in the PCH EK series are installed flush against the back wall connection pipes are hidden This gives the roo
86. started simultane ously the surge current would be unacceptably high Therefore the microprocessor board of each indoor unit has a 8 tog gle DIP switch that can be programmed to give sequential starting with up to 50 seconds delay When the switch of the remote controller is pressed master unit comes on immediately followed by the other units in the programmed order Thereafter the thermistor in each indoor unit controls compressor operation to keep the room at the set temperature The remote controller is connected to the indoor units by non polar 2 wire cable Total cable length can be as much as 550 yards This system can be applied to the air conditioning of large offices or conference rooms supermarkets etc 3 Control Using Two Remote Controllers Two remote controllers can be used to control either one unit or several units in group control This makes it possible to control units with ease either from a distance or at close range Units operate according to the latest commands from either remote controller 4 Both Remote ON OFF Control and Individual Control All units can be turned on and off simultaneously using the remote ON OFF switch and also individual units can be con trolled from the remote controllers This system is well suited to buildings having a large number of rooms In offices for example all units can be started together to cool or heat the premises before workers arrive operated as necessary by individual remote controll
87. tached to a sub unit Damaged transformer Bad contact of CN4T Broken fuse 5 6 7 8 Circuit breaker OFF 1 Measure the voltage between terminals of remote controller If no voltage remove the terminals and measure the voltage between wires If the voltage is between 6VDC and 12V replace the remote controller 2 8 Check each point If normal replace the indoor controller board OC193 44 __ 2 SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER WIRED REMOTE CONTROLLER 2 1 When malfunction occurs during operation When a malfunction occurs the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote controller 1 ON the set temperature display part CHECK appears and the unit CHECK mode address and the check code are displayed alternately at one second intervals Check mode Example P AUE CHECK n er D Unit MODE CLOCK TIMER FAN SPEED AIR DISCHARGE FILTER code address OO AIRSWEEP CHECK 2 When one remote controller controls several units in the group con C 2 SETTEMP TIMER SET TEST RUN trol the LCD shows the unit address and check code of the first mal komi Co D functioning unit c 3 To cancel the check mode press the ON OFF button In remote ON OFF control press the
88. te controller However in the following cases the discharge direction turns to the horizontal discharge despite the setting with the remote controller When the thermostat turns to OFF During defrosting operation with the indoor fan stopped While the indoor fan operates at EXTRA LOW speed in the hot adjustment 4 During the operation OFF the auto vane is in the horizontal position 5 When the vane motor is out of order or the connector is badly connected the air discharge display of the remote controller continues OC193 39 2 6 TIMER operation WIRED REMOTE CONTROLLER lt Timer function gt AUTO STOP The air conditioner stops after the set time lapses AUTO START The air conditioner starts after the set time lapses AUTO OFF Timer is not active wees Mir SLIM Qovorr o How to operate gt d 1 Press POWER ON OFF button 2 Press TIMER ON OFF button to select AUTO STOP or AUTO START 3 Press CLOCK TIMER button to set desired time Time setting is in 1 hour units for up to 24 hours Each time TIMER SET button is pressed set time increases by 1 hour When TIMER SET button is pressed and held the set time increases by 1 hour every 0 5 seconds 4 To cancel the timer operation press POWER ON OFF button lt Timer setting example gt This setting will stop the operation in 8hours With the lapse of time time display c
89. thermistor 16 Removing the indoor coil thermistor After removed the electrical box covers 1 Remove the right side panel 2 Remove the set screw of the thermistor check plate and the set screws of the side plate 3 pcs See phot 9 3 Remove the indoor coil thermistor from the heat exchang er 4 Disconnect the connector CN 21 from the controller board in the electrical box 5 Take out the thermistor OC193 60 14 PARTS LIST PCH24EK PCH30EK PCH36EK PCH42EK ELECTRICAL PARTS PCH24EK1 PCH30EK1 PCH36EK1 PCH42EK1 Parts No Parts Name Specifications Drawing No Remarks Circuit Diagram Symbol RO1 172 310 INDOOR CONTROLLER BOARD T7W E06 310 INDOOR CONTROLLER BOARD T7W 410 239 FUSE 250V 6A F T7W 829 070 CONTROLLER CASE T7W 430 260 TRANSFORMER RED 15 5VAC 0 3A BRN 11 0VAC 0 6A T7W 045 255 FAN MOTOR CAPACITOR 3 5uF 500V T7W 055 255 FAN MOTOR CAPACITOR 4uF 500V R01 556 246 TERMINAL BLOCK TO REMOTE CONT ROLLER 2P 1 2 T7W E02 716 TERMINAL BLOCK TO REMOTE CONT ROLLER 2P 1 2 RO1 377 246 TERMINAL BLOCK TO OUTDOOR 1 2 3 R01 998 246 TERMINAL BLOCK POWER SUPPLY 2P L1 L2 T2W 359 342 HEATER CONTACTOR LY 2F DC 12V 15A R01 673 215 HEATER CONTACTOR LY 2F DC 12V 15A R01 479 215 HEATER CONTACTOR LY 1F DC 12V 15A T7W 43

PCH24EK1 PCH30EK1 PCH36EK1 PCH42EK1

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