Mitsubishi Electronics PUH18EK manual

TECHNICAL & SER VICE MANUAL SPLIT -TYPE,HEA T PUMP AIR CONDITIONERS CONTENTS 1. FEA TURES ···········································2 2. SPECIFICA TIONS·································5 3. DA T A ····································[...]

2 1 FEA TURES 1. COMP ACT DESIGN The PK series models have been downsized and now require such minimal wall space that they can even be installed above windows. For the PKH18/24FK, 13in of wall space between the ceiling and the window allows “above window” installation (14.5in for the PKH30/36FK) 2. A FURTHER REFINEMENT OF COMFORT WITH NOISE SU[...]

3 5. ADV ANCED MICROPROCESSOR (1) Easy to Use Microprocessor 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) Ultra-Thin Remote Controller Units operation mode, set temper[...]

4 7. HIGH RELIABILITY AND EASY SERVICING In addition to the self-diagnostic function, units are also equipped with a 3-minute time delay mechanism (cooling), an auto restart function, an emergency operation function, a test run switch, etc., to assure high reliability and easy servicing. 8. FOUR-W A Y PIPING ACCESS MAKES INST ALLA TION LA YOUT EASY[...]

5 Capacity Moisture removal Power Consomption EER SEER HSPF COP INDOOR UNIT MODELS External finish Power supply Max.fuse size (time dalay) Min.ampacity Fan motor Booster heater Airflow Hi-Lo Sound level Hi-Lo Cond. drain connection OD Dimensions Weight OUTDOOR UNIT MODELS External finish Power supply Max.fuse size (time dalay) Min.ampacity Fan moto[...]

6 Models Models Outdoor intake air DB temperature ( ˚F ) PKH18FK 71 67 63 62.5 60 59 71 67 63 62.5 60 59 71 67 63 62.5 60 59 71 67 63 62.5 60 59 TC 21.0 19.5 18.2 18.1 17.2 16.8 27.9 26.1 24.3 24.1 23.0 22.5 34.9 32.6 30.4 30.2 28.8 28.2 39.8 37.1 34.7 34.4 32.8 32.2 SHC 14.4 16.0 17.4 15.5 15.1 14.5 16.1 18.5 20.5 18.0 17.6 17.0 21.5 24.5 26.9 23[...]

7 Models Models Outdoor intake air WB temperature ( ˚F ) PKH18FK 75 70 65 75 70 65 75 70 65 75 70 65 CA 12.1 12.4 12.7 16.3 16.6 17.0 21.5 21.9 22.5 24.7 25.3 25.9 PC 1.20 1.16 1.1 1 1.82 1.76 1.69 2.32 2.24 2.15 2.71 2.62 2.53 CA 14.1 14.4 14.7 18.9 19.4 19.8 25.0 25.5 26.1 28.7 29.4 30.1 PC 1.34 1.29 1.24 2.03 1.96 1.89 2.59 2.50 2.40 3.04 2.93 [...]

8 SHF=0.71V Does not include booster heater (1.9kW) T otal power consumption (kW) T otal capacity (x10 3 Btu/h) 30 35 24 18 12 3.0 2.5 2.0 1.5 15 25 35 45 55 65 T otal power consumption (kW) T otal capacity (x10 3 Btu/h) Outdoor intake air DB temperature ( F) Outdoor intake air WB temperature ( F) 36 30 24 18 12 3.0 2.5 2.0 1.5 63 67 71 63 67 71 0 [...]

9 NOTES : A point on the curve shows the reference point. PKH30FK COOLING CAP ACITY PKH30FK HEA TING CAP ACITY PKH36FK COOLING CAP ACITY PKH36FK HEA TING CAP ACITY 71 67 63 71 67 63 42 36 30 24 4.0 3.5 3.0 2.5 2.0 SHF=0.75 Total capacity(x10 Btu/h) 3 Total power consumption(kW) Outdoor intake air DB temperature( ¡ F) 0 23 32 35 45 55 65 (67) 75 85[...]

10 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. <Cooling mode> PKH18FK PKH18FK PKH18FK PKH18FK Data is based on the condition of outdoor humidity 75%. A point on the curve shows the reference point. <Heating m[...]

11 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. <Cooling mode> PKH24FK PKH24FK PKH24FK PKH24FK Data is based on the condition of outdoor humidity 75%. A point on the curve shows the reference point. <Heating mode> 360 350 340 330 320 310 300 290 280 [...]

12 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. <Cooling mode> PKH30FK PKH30FK PKH30FK PKH30FK Data is based on the condition of outdoor humidity 75%. A point on the curve shows the reference point. <Heating mode> 350 340 330 320 310 300 290 280 270 [...]

13 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. <Cooling mode> PKH36FK PKH36FK PKH36FK PKH36FK Data is based on the condition of outdoor humidity 75%. A point on the curve shows the reference point. <Heating mode> 350 340 330 320 310 300 290 280 270 [...]

14 4. ST ANDARD OPERA TION DA T A Models Item Electrical circuit Refrigerant circuit Indoor side Outdoor side V oltage Frequency T otal input Indoor fan current Booster heater current Outdoor fan current Comp. current Condensing pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Comp.shell bottom temperature [...]

15 Condition Standard temperature Maximum temperature MInimum temperature Maximum humidity Standard temperature Maximum temperature MInimum temperature 80 95 67 80 70 80 70 67 71 57 75 60 67 60 95 1 15 23 80 47 75 17 75 — — 75 43 65 15 Function Cooling Heating Model Airflow ( CFM ) Air speed ( ft/sec ) Coverage range ( ft ) PKH18FK PKH24FK PKH3[...]

16 9-1/4 1-25/32 9-1/4 1-25/32 9-1/4 9-1/4 1-25/32 1/2 13-3/8 7-3/4 Top Front Right side Left side 55-1/8 42-15/16 Air intake 9-1/4 C Knock out hole for right piping Refrigerant pipe. Drain pipe Knock out hole for left piping Drain hose for left-hand side piping Drain hose Lower side Auto vane (Gas pipe) Drain hose Bolt Gas pipe 19/32 Terminal bloc[...]

17 66-5/32 9-1/4 53-15/16 Alr Intake Front Knock out hole Right side 9-1/4 7-3/4 C for right piping B A A B C 4-1/32 Liquid pipe 1/2F Gas pipe Sleeve > < 1 > < 1 Sleeves are availaable on the market. Through hole 3-1/2 3-1/2~ 4 3/4F Bolt 19/32 or less T erminal block for remote controller 4-3/8 2-5/32(Gas pipe) T erminal block for contr[...]

18 Unit : mm 4.2. Outdoor Unit PUH18EK T er minal block f or indoor and outdoor unit connection T er minal block f or power line Ground terminal Handie for moving Service panel Refrigerant pipe (Flared) 5/8 Knock out hole for front piping 4-3/4 (refrigerant. drainage and wiring) 4-1/8 Drain hole Drain hole 2-U-shaped notched holes 1-5/8 1-3/4 1/5/1[...]

19 Unit : mm Outdoor Unit PUH24EK T er minal block f or indoor and outdoor unit connection T er minal block f or power line Ground terminal Handie for moving Service panel Refrigerant pipe (Flared) 5/8F Knock out hole for front piping 4-3/4 (refrigerant. drainage and wiring) 4-1/8 Drain hole Drain hole 2-U-shaped notched holes 2-1/16 2-1/4 1/9/16 B[...]

20 T erminal block for indoor and outdoor unit connection T erminal block for power line Ground terminal Handie for moving Service panel Refrigerant pipe (Flared) (PUH30/36EK) 3/4 (PUH42EK)7/8F Knock out hole for front piping 4-3/4 (refrigerant. drainage and wiring) 4-1/8 Drain hole Drain hole 2-U-shaped notched holes 2-1/16 2-1/4 1/9/16 Bottom pip[...]

21 F F HR AIR SWEEP TIMER OFF AUTO STOP AUTO ST AR T • CENTRALL Y CONTROLLED • ST AND BY DEFROST CHECK SET TEMP HEA T AUTO COOL/DR Y TEMPERA TURE WARMER COOLER AUTO DRY HEA T COOL ON CHECK TEST RUN LOW HIGH ON/OFF POWER — SET 3-5/8 3-5/8 5/8 2-3/4 TIMER MODE HOURS F AN SPEED LOW/HIGH AIR UP/DOWN SWING/STOP DISCHARGE CHECK TEST RUN 4-3/4 4-3/[...]

22 5 WIRING DIAGRAM NOTES : 1. Since the indoor fan motor (MF) is connected with 230V power , using 208V power will require a setting change of the dip switch (SW7<I.B>) on the indoor con- troller board as shown in fig : w 1. Indoor fan motor (MF) for 208V . 2. Since the indoor transformer (T) is connected with 230V power if 208V power is use[...]

23 Main function of LED(when both Nos.1 and 2 of are "OFF") How to use SW1 and 2 ● Pressing erases the past check contents loaded on the microcomputer . ● The output display (light) remains during opera- tion but pressing displays the past check contents in flashing mode. Pressing the switch again retums to output display (light). NOT[...]

24 NOTES : Symbols used in wiring diagram above are. / :T erminal block, ¤¤¤ :Connector , ¤ :PC board insertion tab. ● The connector marked s — ¤ — is to turn the compressor ON-OFF during servicing. The compressor stops by disconnecting the white connector as shown at the right. ● Since LD8 lights when normal power is turned "ON&q[...]

25 REFRIGERANT SYSTEM DIAGRAM 6 Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor coil thermistor RT2 Distributor Restrictor valve Capillary tube ( { 0.126x { 0.071x15.7) ( { 0.126x { 0.071x9.8) PKH30FK( { 0.157x { 0.079x1 1.4) PKH36FK( { 0.157x { 0.079x1 1.4) Capillary tubesize:(ODxIDxLength) The symbol { indicates [...]

26 7 OPERA TION FLOW-CHART START Power circuit breaker Check SW ON twice Operation SW ON “OFF” timer “ON” timer STOP Set time complete Set time complete 1 NO NO NO NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES YES YES YES YES w 1 w 2 w 3 w 4 w 5 w 7 w 6 PROTECTION DEVICE SELF HOLD RELEASE Remote controller indicator lamp OFF Tr[...]

27 COOL operation Four-way valve/OFF Initial COOLING NO NO NO NO NO NO YES YES YES YES YES YES NO YES YES YES YES YES YES YES YES YES YES YES NO NO NO NO YES NO NO NO NO NO NO NO NO NO w 8 w 9 Vane intial setting Vane 60 deg downward angle 70 deg downward angle Fan speed LOW Downward discharge 1 hour Vane setting notch Vane horizontal airflow Compr[...]

28 Heat operation Intial HEATING Vane setting notch Vane intial setting Defrosting Heating area Defrost release Defrost 30 min. elaspe Outdoor unit trouble Four-way valve ON Hor adjust in process Compressor ON Compressor thermostat ON Allowance cancel Indoor piping -5 ¡ F or lower Outdoor unit trouble FAN SPEED Very low airflow Compressor OFF 1 3 [...]

29 w 8 ~ 9 Refer to page 35. w 12 When room temperature is 4°F or below , the compressor cannot operate. When room temperature rises over 64°F , the compressor starts after a 3-minute time delay . w 13 Compressor ON time is decided by room temperature. Refer to page 35. w 14 In dry operation, compressor ON makes the fan speed LOW and compressor O[...]

30 8 MICROPROCESSOR CONTROL ● Compressor and outdoor fan : ON- OFF ● Operation mode change :COOL- HEA T . 1.OUTLINE OF MICROPROCESSOR CONTROL ● OFF-ON switching. ● COOL/DRY -AUTO-HEA T selector switching. ● Thermostat setting. ● TIMER mode selector-switching and T imer setting. ● HIGH-LOW fan speed switching. ● AUT O V ane selector [...]

31 Minimum 3 minutes 1 ON Thermostat Indoor fan Auto vane Booster heater Compressor ON LOW or HIGH Initally 10 degrees (Changeable by remote controller setting) LOW or HIGH ON ON OFF OFF CLOSE CLOSE OFF OFF OFF Operation starts by POWER button ON. Operation stops by POWER button OFF. The room temperature displayed on Remote controller becomes equal[...]

32 (1) Compressor control 1 3-minute time delay T o prevent overload, the compressor will not start within 3 minutes after stop. 2 The compressor runs when the room temperature displayed on remote controller is higher than set temperature. The compressor stops when the room temperature displayed on remote controller is equal to or lower than the se[...]

33 (3) Auto vane control Auto vane position is set to 10degrees discharge at the start-up of COOL operation. It can then be changed by the remote controller . (a) Stop mode (fixed operation) ( ! ) At start-up of COOL operation, the auto vane is set to 10 degrees discharge direction. ( @ ) Discharge direction can be changed with AIR DISCHARGE UP/DOW[...]

34 <Auto vane drive> (a) The vane is driven by DC12V motor . (b) Air discharge direction is selected depends on the number of pulse were sended. (c) Before start driving the auto vane, detect the standard position first, output the number of pulse to each air discharge. (d) The speed of the auto vane drive for both open and close are setted a[...]

35 <DR Y operation time chart> Minimum 3 minutes 1 ON 30 Thermostat Indoor fan Auto vane Booster heater Compressor ON Initally 10 degrees discharge ( Changeable by remote controller setting ) LOW speed LOW speed ON ON OFF OFF CLOSE CLOSE OFF OFF OFF Operation starts by POWER button ON. Operation stops by POWER button OFF. 30 The room temperat[...]

36 Minimum 3 minutes 2 ON Thermostat Indoor fan Auto vane Booster heater Compressor Power ON lamp STAND BY lamp ON ON LOW or HIGH LOW or HIGH ON OFF OFF OFF OFF ON OFF ON OFF ON OFF Extra LOW 1 Extra LOW 1 Hot adjustment 10 ¡ Close 10 ¡ Close From POWER ON until warm begins to blow Hot adjustment Depends on remote controller setting Depends on re[...]

37 (1) Compressor control 1 3-minute time delay T o prevent overload, the compressor will not start within 6, minutes after stop. 2 The compressor runs when the the room temperature displayed on remote controller is lower than the set temperature. The compressor stops when the the room temperature displayed on remote controller is equal to or highe[...]

38 (3) Auto vane control (a) ST OP mode (fixed operation) ( ! ) The discharge direction at the start-up of HEA T operation is the same as that of the previous operation. ( @ ) The discharge direction can be charged by the remote controller setting. In the following cases, discharge direction becomes 10° regardless of the remote controller setting.[...]

39 (6) Indoor coil thermistor abnormality detection An abnormality can be detected during compressor ON, except for the following. ● For the first 30 minutes after the temperature dif ference between the indoor coil temperature and room temperature enters the RANGE C. ● When the temperature difference enters the RANGE C until it moves to the RA[...]

40 (1) Initial mode 1 When AUTO operation starts after unit OFF . ● If the room temperature displayed on remote controller is higher than the set temperature, operation starts in COOL mode. ● If the room temperature displayed on remote controller is equal to or lower than the set temperature, operation starts HEA T mode. 2 When AUTO operation s[...]

41 <How to operate> T o change the air flow direction, press AIR DISCHARGE UP/DOWN button. 1 10° 2 30° 3 60° 4 70° (1) COOL/DR Y operation At the start-up of COOL or DRY operation, the discharge direction in automatically set to 10°. After , it can be changed to another direction with AIR DISCHARGE UP/DOWN button on the remote controller[...]

42 MITSUBISHI ELECTRIC -CENTRALLY CONTROLLED- STAND BY DEFROST ON CHECK DRY COOL HEAT CHECK SET TEMP TIMER OFF AUTO STOP AUTO START F HR F LOW HIGH AUTO RETURN CHECK TEST RUN POWER ON/OFF HEAT SET TEMPERATURE AUTO COOL/DRY COOLER WARMER TIMER MODE HOURS FAN SPEED LOW/HIOGH AIR DISCHARGE UP/DOWN SWING STOP CHECK TEST RUN <T imer function> AUTO[...]

43 (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 HEA T operation. (2) T rouble during test run ● If the unit malfunctions during th[...]

44 2-9 Interlock with ventilation system (LOSSNA Y) Mr . SLIM/LOSSNA Y interlock operation is available by using the optional parts listed below . (1) System organization NOTE: For further information, refer to the LOSSNA Y technical & service manual. (2) Required parts are: ● Relay box (PZ-12RB-E) ••• Contact capacity 10A ● Remote di[...]

45 2-10 Dip switch and jumper connector functions Each figure shows the initial factory setting. 1 On remote controller board (1) SW17(Address selector) SW17-1 ~ 6) 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 contr[...]

46 Nomal operation For emergency cooling For emergency heating 2 4 OFF: 208V ON : 230V ) ( 1 2 3 4 5 6 ON OFF 1 2 ON OFF 1 2 ON OFF 1 2 ON OFF 1 2 3 4 ON OFF J1-7) Switch for fan speed during thermostat OFF in HEA T operation Provided : EXTRA LOW Not provided : LOW J1-8) Switch for fan speed during thermostat OFF in HEA T operation. Provided : EXTR[...]

47 3. OUTDOOR UNIT CONTROL 3-1 Outdoor fan control The rotational frequency of outdoor fan is phase-controlled according to the outdoor coil temperature. This control allows the cooling operation even with the low outside-air temperature and the heating operation even with the high outside-air tempera- ture. 3-2 Outdoor unit control The outdoor uni[...]

48 (1) Start conditions A. When all of the following conditions are satisfied, defrosting will start. However , when the bypass valve turns OFF , defrosting starts 10 minutes later . (a) More than seven minutes have passed since the compressor start-up. (b) The outdoor coil thermistor reads 23˚F or below . (c) The outdoor fan motor output step is [...]

49 (3) Defrost interval The defrost interval time is determined as follows. ● Initial defrost interval is 50 minutes. ● The defrost interval after defrosting depends on the preceding defrosting time as shown below . NOTE1:If the unit stops during defrosting , the next defrost interval will be 50 minutes. NOTE2:If a protection function works for[...]

50 3-7 Service functions (1) Compulsory defrositng 1 When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting. ● During HEA T mode ● The compressor is ON. ● The outdoor coil temperature is being displayed by LED. (Outdoor controller board dip switch SW3-1 : OFF , SW3-2 : ON) ● The outdoor coil thermi[...]

51 TROUBLESHOOTING 9 Symptom Cause Check points The display “CENTRALL Y CONTROLLED” on remote controller does not disap- pear . 1) W rong address setting of remote con- troller/indoor controller board. 2) T imer adapter is connected to the remote controller . 3) Signal transmission error between indoor unit and remote controller . 1) Check the [...]

52 2. SELF DIAGNOSTIC FUNCTION WITH 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 . (A) ON the set temperature display part, “CHECK” appears, and the unit address and the check code are displayed alt[...]

53 Check code Diagnosis of malfunction Cause Check points EO Signal transmitting/receiving error (Indoor controller does not respond to remote controller signal.) During individual unit control 1) Bad contact of transmission wire 2) Signal transmitting/receiving cir- cuit is abnormal. 1) Check the transmission wire. 2) Check with another remote con[...]

54 3.SER VICE DA T A INDICA TION BY SWITCHES ON OUTDOOR CONTROLLER BOARD Setting dip switchs SW2 and SW3 on the outdoor controller board enables LED to show the output state and check code. Output state is shown by LED lighting, and check code by blinking. SW1 : T urning SW1 ON clears the check code. If SW1 is turned ON while the check code is blin[...]

55 3-1 Outdoor coil temperature T o obtain data on the outdoor coil tempera- ture, add the number of bits of lighting LEDs, and see the graph below to find the temperature. 3-2 Fan output step T o obtain data on the fan output step, add the number of bits of lighting LEDs, and see the graph below to find the fan rotational frequency . 3-3 T otal ti[...]

56 Blinking LED Diagnosis of malfunction Cause Check point LD1 Reversed phase Phases A 1 , A 2 , and A 3 are con- nected improperly . Check the power supply connection. LD2 Open phase ● Phase A 2 is open. ● Contact of protector , such as thermal switch, opened when power was turned on. ● Check the power supply . ● Check each protector . LD3[...]

57 6. WRONG WIRING ON SITE 6-1 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. 6-2 Phenomenon due to wrong wiring between indoor and outdoor units Wrong wirin[...]

58 Symptom LOSSNA Y control switch does not work. LOSSNA Y air speed can not be controlled in interlock opera- tion. LOSSNA Y control switch can not work during interlock operation. LOSSNA Y control switch is effective only while Mr . SLIM is not operat- ing. LOSSNA Y fan speed is fixed to HIGH during interlock operation. LOSSNA Y fan speed LOW/HIG[...]

59 SYSTEM CONTROL 10 1 Group control with a single remote controller (See page 59.) Unit Remote controller Unit Unit Many 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 [...]

60 2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER A maximum of 50 units can be started in order according to the dip switch settings 2-1 How to wire (1) Connect the remote controller to the double terminal block on the indoor controller board of the master unit (No.0 unit). (See Figure 1.) (2) Connect the double terminal block of the master unit [...]

61 4. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS This method is auailable to control one unit or any number of units. The following operations are available by connecting a relay , a timer adapter (P AC-SA89T A-E), and a remote ON/OFF switch to the system. T imer adapter is an optional part. Other parts are available on the market. (A) T o start [...]

62 NOTE1 : Install the relay box where it 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. NOTE3 : When the power supply of the control circuit is 220/240V AC, ● Do not connect the control circuit wire to the remote controller cable directly [...]

6. MUL TIPLE REMOTE CONTROL DISPLA Y Y ou can control serveral units with a multiple remote control display ,by wiring an optional multipe display adapter (P AC-SA88HA-E) with relays and lamps on the market. 6-1 How to wire (1) Connect the multipe display adapter to the connector CN51 on the indoor controller board. (2) Wire three of the five wires[...]

64 1 1 DISASSEMBL Y INSTRUCTIONS OPERA TING PROCEDURE PHOTOS&ILLUSTRA TION Metal fixture Screws 1. Removing the lower side of the indoor unit from the instal- lation plate (1) Remove the 2 screws. Hang the indoor unit hangers to the catches on the instal- lation plate. Hanger of indoor unit Catch of installation plate 2. Removing the right side[...]

65 OPERA TING PROCEDURE PHOTOS&ILLUSTRA TION (8) Remove the screws of the indoor controller board case, and pull out the indoor controller board case. Then the transformer and the capacitor and relay can be serviced. 5. Removing the vane motor (1) Remove the right side panel. (2) Remove the screw of the electrical parts box cover , and remove t[...]

66 OPERA TING PROCEDURE PHOTOS 8. Removing the lineflow fan and the fan motor (1) Remove the left and right side panels. (2) Remove the grills. (3) Remove the electrical parts box. (4) Remove the drain pan. (5) Loosen the screw that fixes the lineflow fan to the fan motor . (See Photo 7. ) (6) Remove the 4 screws of the motor fixture, and remove th[...]

67 OPERA TING PROCEDURE PHOTOS 1. Electrical parts (1) Remove top panel (3 screws in front, 2 screws in rear) (2) Remove cover panel (1 screw). The panel is anchored by clicks to the side panel. Remove by pulling towards you. (3) Remove cover panel (1 screw). The panel is anchored by clicks on the right and left sides. After removing the screw , pu[...]

68 OPERA TING PROCEDURE PHOTOS 3. Heat Exchanger , Compressor (1) Remove the rear panel (2 screws in front, 1 screw on the side, 3 screws in the rear). Remove the valve bed, and open the rear panel to the rear to remove. NOTE : All panels are clasped, and must be removed by shifting up and down. (2) Remove right side panel (4 screws). (3) Remove re[...]

69 OPERA TING PROCEDURE PHOTOS 1. Electrical parts (1) Remove top panel (3 screws in front, 2 screws in rear) (2) Remove cover panel (1 screw). The panel is anchored by clicks to the side panel. Remove by pulling towards you. (3) Remove cover panel (1 screw). The panel is clasped on the right and left sides. After remov - ing the screw , pull the p[...]

70 OPERA TING PROCEDURE PHOTOS 3. Heat Exchanger , Compressor (1) Remove the rear / right side panel (2 screws in front, 1 screw on the side, 3 screws in the rear). Remove the electrical box, valve bed, and open to the rear to remove (anchors attached). (2) Remove right side panel (4 screws). (3) Remove rear guard (3 screws). (4) Remove separator s[...]

71 P ART LIST 12 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PKH 24FK 30FK 18FK Part number that are circled not shown in the figure. 1 2 3 4 5 6 7 8 9 10 R01 12G 661 R01 12G 662 R01 12G 691 R01 16G 692 R01 12G 500 R01 12G 811 R01 16G 811 R01 12G 812 R01 16G 812 R01 12G 641 R01 16G 641 R01 12G[...]

72 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PKH 24FK 30FK 18FK 1 2 3 4 5 6 FAN MOTOR RUBBER MOUNT RIGHT LINEFLOW FAN LEFT LINEFLOW FAN SLEEVE BEARING 1 2 1 1 1 1 1 2 1 1 1 1 1 2 1 1 1 1 36FK 1 2 1 1 1 1 MF MF T7W BOO 762 T7W B01 762 R01 12G 105 R01 16G 105 R01 12G 115 R01 16G 115 R01 12G 11[...]

73 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PKH 24FK 30FK 18FK 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 BEARING MOUNT DRAIN PAN VANE MOTOR AUTO VANE CENTER COVER JOINT SHAFT DRAIN HOSE HEAT EXCHANGER CONTROLLER BOARD FUSE TERMINAL BLOCK RUN CAPACITOR [...]

74 PUH18EK FUNCTIONAL P ARTS OC120--3.qxp 24/6/97 1:01 AM Page 74[...]

75 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PUH 18EK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 PROPELLER FAN MOTOR OUTDOOR CONTROLLER BOARD FUSE TERMINAL BLOCK CONTACTOR FAN CAPACITOR TRANSFORMER COMPRESSOR CAPACITOR OUTDOOR COIL THERMISTOR OVERC[...]

76 PUH24EK FUNCTIONAL P ARTS OC120--3.qxp 24/6/97 1:02 AM Page 76[...]

77 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PUH 24EK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 PROPELLER FAN MOTOR OUTDOOR CONTROLLER BOARD FUSE TERMINAL BLOCK CONTACTOR FAN CAPACITOR TRANSFORMER COMPRESSOR CAPACITOR OUTDOOR COIL THERMISTOR COMPRESS[...]

78 PUH30/36EK FUNCTIONAL P ARTS 36 37 36 37 6 3 4 8 12 5 23 33 1 1 24 2 28 17·18 19·20 7 27 33 29 32 16 21 22 34 35 15 13·14 30·31 9 10·1 1 OC120--3.qxp 24/6/97 1:02 AM Page 78[...]

79 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set 30EK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 PROPELLER FAN MOTOR OUTDOOR CONTROLLER BOARD FUSE TERMINAL BLOCK CONTACTOR COMPRESSOR CAPACITOR FAN CAPACITOR TRANSFORMER COMPRESSOR CRANKCA[...]

80 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PUH 18EK 1 2 3 4 5 6 7 8 9 FRONT PANEL SERVICE PANEL SIDE PANEL FAN GUARD TOP PANEL PANEL COVER BASE ASSEMBLY REAR PANEL REAR GUARD 1 1 1 1 1 1 1 1 1 OUTDOOR FUNCTION R01 A08 668 R01 A08 661 R01 A08 662 R01 A00 675 R01 A00 641 R01 A00 658 R01 A00 [...]

81 PUH24EK STRUCTURAL P ARTS No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PUH 24EK 1 2 3 4 5 6 7 8 9 TOP PANEL FRONT PANEL FAN GUARD SERVICE PANEL SIDE PANEL (LEFT) REAR PANEL PANEL COVER REAR GUARD BASE ASSEMBLY 1 1 2 1 1 1 1 1 1 R01 A00 641 R01 A11 668 R01 A00 675 R01 A11 661 R01 A11 662 R01 [...]

82 No. Parts No. Parts Name Specifications Remarks (Drawing No.) Wiring Diagram Symbol Q'ty / set PUH 30EK 1 2 3 4 5 6 7 8 9 TOP PANEL FRONT PANEL FAN GUARD SERVICE PANEL SIDE PANEL (LEFT) REAR PANEL PANEL COVER REAR GUARD BASE ASSEMBLY 1 1 2 1 1 1 1 1 1 36EK 1 1 2 1 1 1 1 1 1 R01 A14 641 R01 A14 668 R01 A00 675 R01 A14 661 R01 A14 662 R01 A14[...]

83 OPTIONAL P ARTS 13 Note 1. How to connect refrigerant pipes. Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as the connection takes no more than 5 minutes, no air will enter , and there will be no need for air purging. Remove the blind caps and make the connections within 5 minutes. [...]

84 ORN 1 2 3 BRN RED 3. TIMER ADAPTER This adapter is needed for system control and for operation via external contacts. Adapter connection is described on page 57. Part No. P AC-SA89T A-E MITSUBISHI ELECTRIC SET MONITOR SMTWTFS GET BACK SET/MONITOR BACK AHEAD ON DAILY TIMER BACK SET BACK ON OFF OFF DEGREE SET BACK WEERLY TIMER TODAY CLOCK AHEAD Re[...]

85 1 2 3 4 5 BRN RED ORN YLW GRN BACK ACTIVE BYPASS POWER ON/OFF DUAL CENTRAL AHEAD MITSUBISHI ELECTRIC ENGAGED GROUP ACTIVE BYPASS GROUP SELECTION PROGRAM TIMER CONTROLLER OPERATION DUAL CENTRAL 1234567891 0 117 117 BACK ACTIVE BYPASS POWER ON/OFF DUAL CENTRAL AHEAD ENGAGED GROUP ACTIVE BYPASS GROUP SELECTION PROGRAM TIMER CONTROLLER OPERATION DUA[...]

86 A N E T (Y) (W) (R) (O) (BR) 5A A POWER SUPPLY N E Fuse(5A) Tie-wrap Wiring has to be changed when a 200,230 or 240V power is used. Tie-wrap TRANSFORMER Transmission TERMINAL-BLOCK FOR TRANSMISSION TERMINAL-BLOCK OF POWER SUPPLY 200 220 230 240 BACK ACTIVE BYPASS POWER ON/OFF DUAL CENTRAL AHEAD ENGAGED GROUP ACTIVE BYPASS GROUP SELECTION PROGRAM[...]

87 6. PROGRAM TIMER ADAPTER This adapter is needed when a program timer(P AC-SK65PT)or a centralized remote controller(P AC-805RC)is used. 6-2 Connection method Connection and wiring methods differ with the type of the indoor unit used. Confirm the type before carrying out the work. 6-1 Parts included Part No. P AC-825AD (2) When the centralized re[...]

New publication, effective Jun. 1997 Specifications subject to change without notice c Copyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO.,L TD. Issued in Jun. 1997. No. OC120 5020 OC120--3.qxp 24/6/97 1:05 AM Page 88[...]

3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to ch ange without no tice.[...]