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Mitsubishi Electric PKH18FK Technical & Service Manual

Split-type,heat pump air conditioners series pkh wall mounted
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SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Wall Mounted
Series PKH
<Indoor unit>
PKH18FK / PUH18EK
Models
PKH24FK / PUH24EK
PKH30FK / PUH30EK
PKH36FK / PUH36EK
Indoor unit
-CENTRALLY CONTROLLED-
POWER
ON/OFF
STAND BY
DEFROST
ON
CHECK DRY
HEAT
AUTO
COOL/DRY
HEAT
COOL
CHECK
SET
WARMER
COOLER
SET TEMP
F
TEMPERATURE
TIMER OFF
TIMER
MODE
HOURS
AUTO STOP
HR
AUTO START
LOW HIGH
FAN SPEED LOW/HIOGH
AIR
SWING
UP/DOWN
STOP
DISCHARGE
F
AUTO RETURN
CHECK TEST RUN
CHECK
TEST RUN
MITSUBISHI ELECTRIC
REMOTE CONTROLLER
CONTENTS
1. FEATURES ···········································2
2. SPECIFICATIONS·································5
3. DATA ·····················································6
4. OUTLINES AND DIMENSIONS··········16
5. WIRING DIAGRAM·····························22
6. REFRIGERANT SYSTEM DIAGRAM ······25
7. OPERATION FLOW-CHART ··············26
8. MICROPROCESSOR CONTROL·······30
9. TROUBLESHOOTING ························51
10. SYSTEM CONTROL ···························59
11. DISASSEMBLY INSTRUCTIONS ·······64
12. PARTS LIST········································71
13. OPTIONAL PARTS ·····························83
The Slim Line.
From Mitsubishi Electric.
R
No. OC120

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Summary of Contents for Mitsubishi Electric PKH18FK

  • Page 1 SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS No. OC120 TECHNICAL & SERVICE MANUAL Wall Mounted Series PKH <Indoor unit> PKH18FK / PUH18EK Models PKH24FK / PUH24EK PKH30FK / PUH30EK PKH36FK / PUH36EK CONTENTS 1. FEATURES ···········································2 2. SPECIFICATIONS·································5 3. DATA ·····················································6 4. OUTLINES AND DIMENSIONS··········16 5.

  • Page 2: Compact Design

    4. INSTALLATION : FAST AND ENDLESSLY ADAPTABLE (1) External piping An external piping connection of 24in and a very light body promote trouble-free installation for PKH18FK. (2) Multi-directional piping Multi directional drain and refrigerant piping rodically improves flexibility in selecting installation layouts. PKH18FK drain piping can be installed in 5 directions, while PKH30/36FK models boast refrigerant piping in 4 directions and drain piping in 2 directions.
  • Page 3 CHECK TEST RUN remote controller with the easily understood visual Liquid Crystal Display (LCD). MITSUBISHI ELECTRIC 3) Convenient 24-Hour ON-OFF Timer The timer allows Mr.SLIM to be switched on or off automatically at the time is shown on the LCD.

  • Page 4: Indoor Unit

    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.

  • Page 5: Specifications

    SPECIFICATIONS MODELS : PKH18/24/30/36FK Model PKH18FK PKH24FK PKH30FK PKH36FK Item Cooling *1 Btu/h 18,000 24,000 30,000 34,200 Capacity Heating *1 Btu/h 18,600 [ 24,100/25,100 ] 25,000 [ 30,500/31,500 ] 33,000 [ 39,100/40,500 ] 38,000 [ 44,100/45,500 ] Heating *2 10,700 [ 16,200/17,200 ]...

  • Page 6: Cooling Capacity

    Models ( CFM ) ( ˚F ) 21.0 14.4 1.56 20.2 13.9 1.69 19.4 13.3 1.84 18.5 12.7 1.99 17.6 12.1 2.15 PKH18FK 19.5 16.0 1.52 18.8 15.4 1.65 18.0 14.8 1.79 17.1 14.0 1.93 16.3 13.4 2.07 0.16 18.2 17.4...

  • Page 7: Heating Capacity

    Outdoor intake air WB temperature ( ˚F ) 208V Models 230V Airflow (CFM) ( ˚F ) 12.1 1.20 14.1 1.34 16.3 1.49 18.7 1.65 21.4 1.83 23.7 1.99 PKH18FK 12.4 1.16 14.4 1.29 16.7 1.44 19.1 1.59 21.8 1.76 24.1 1.91 12.7 1.11 14.7 1.24 17.0 1.38 19.5...

  • Page 8: Performance Curve

    2. PERFORMANCE CURVE NOTES : A point on the curve shows the reference point. PKH18FK COOLING CAPACITY PKH18FK HEATING CAPACITY PKH18FK COOLING CAPACITY Does not include booster heater (1.9kW) SHF=0.82 Indoor intake air WB temperature ( F) Indoor intake air DB temperature ( F)
  • Page 9 NOTES : A point on the curve shows the reference point. PKH30FK COOLING CAPACITY PKH30FK HEATING CAPACITY Does not include booster heater(2.2kW) SHF=0.75 indoor intake air DB temperature(¡F) indoor intake air WB temperature(¡F) indoor intake air WB temperature(¡F) indoor intake air DB temperature(¡F) 0 23 32 35 55 65 (67) 75 Outdoor intake air DB temperature(¡F)
  • Page 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 (psi.G) (psi.G) Indoor DB temperature( F)
  • Page 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 (psi.G) (psi.G) Indoor DB temperature( F) Indoor DB temperature( F) DB( F) DB( F) Outdoor ambient temperature...
  • Page 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 (psi.G) (psi.G) Indoor DB temperature( F) Indoor DB temperature( F) DB( F) DB( F) Outdoor ambient temperature...
  • Page 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 (psi.G) (psi.G) Indoor DB temperature( F) Indoor DB temperature( F) DB( F) Outdoor ambient temperature DB( F)

  • Page 14: Standard Operation Data

    4. STANDARD OPERATION DATA Models PKH18FK PKH24FK PKH30FK PKH36FK Item Unit Cooling Heating Cooling Heating Cooling Heating Cooling Heating Voltage 208/230 208/230 208/230 208/230 208/230 208/230 208/230 208/230 Frequency Total input 1.79 1.56 2.36 2.37 3.12 3.02 3.44 3.54 Indoor fan current Booster heater current 7.6/8.4...

  • Page 15: Operating Range

    ( ft ) horizontally from the unit at the High notch position. The coverage range should be used only as a general guideline since it varies according to the size of the PKH18FK 16.1 room and furniture installed inside the room. PKH24FK 16.1...

  • Page 16: Outlines And Dimensions

    OUTLINES AND DIMENSIONS 4.1. Indoor Unit Unit : mm PKH18/24FK...
  • Page 17 PKH 30/36FK Unit : mm(inch)
  • Page 18 4.2. Outdoor Unit PUH18EK Unit : mm...
  • Page 19 Outdoor Unit PUH24EK Unit : mm...
  • Page 20 Outdoor Unit PUH30/36EK Unit : mm...
  • Page 21 Remote controller (PKH series) Unit : mm 3-5/8 3-5/8 •CENTRALLY CONTROLLED• POWER — ON/OFF S T A N D B Y D E F R O S T AUTO DRY HEAT AUTO COOL/DRY HEAT COOL CHECK WARMER COOLER\ SET TEMP TEMPERATURE TIMER OFF TIMER...

  • Page 22: Wiring Diagram

    WIRING DIAGRAM MODELS PKH18/24/30/36FK WIRING DIAGRAM POWER SUPPLY ~(1 PHASE) AC208/230V 60Hz GRN/YLW 10VAC GROUND 230V 208V 14.3VAC MODELS 18.24FK 30.36FK 123 4 1234 CN4T FAN1 4 3 2 1 POWER TRANS TRANS TRANSMISSON WIRES DC12V B LU CNGV VANE B LU LED2 5V POWER...
  • Page 23 MODELS PUH18EK WIRING DIAGRAM COMPRESSOR CAPACITOR OUTDOOR COIL THERMSTOR X14<O.B> BYPASS VALVE RELAY FAN CAPACITOR <32˚F/15kΩ,77˚F/5.4kΩ> ZNR<O.B> VARISTOR F<O.B> FUSE<6A> SW1•2•3<0.B> SELECTOR<CHECK,SERVICE> BYPASS VALVE COIL FC<O.B> FAN CONTROLLER TRANSFORMER 21S4 R.V COIL CRANKCASE HEATER TB1,3 TERMINAL BLOCK OVERCURRENT RELAY LD1~LD8 LED<CHECK,SERVICE>...
  • Page 24 MODELS PUH24/30/36EK WIRING DIAGRAM COMPRESSOR CAPACITOR OUTDOOR CONTROLLER BOARD X13<O.B> R.V RELAY C1,2 FAN CAPACITOR RESISTOR X14<O.B> BYPASS VALVE RELAY COMPRESSOR START CAPACITOR OUTDOOR COIL THERMISTOR ZNR<O.B> VARISTOR F<O.B> FUSE<6A> <32˚F/15kΩ, 77˚F/5.4kΩ> COMPRESSOR START RELAY FC<O.B> FAN CONTROLLER SW1•2•3<O.B> SELECTOR<CHECK,SERVICE> BYPASS VALVE COIL CRANKCASE HEATER TRANSFORMER...

  • Page 25: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Protect Control high pressure high pressure switch PKH18FK switch Oil separator Service Refrigerant pipe Indoor unit Outdoor unit port (option) 4-way valve COOL (check) {5/8" Ball valve HEAT (with heat insulator) Strainer Flexible tube Service port Outdoor coil...

  • Page 26: Operation Flow Chart

    OPERATION FLOW-CHART MAIN OPERATION START Power circuit breaker Check SW ON twice Operation SW “OFF” timer Set time “ON” timer complete Set time complete Trouble Remote controller operation display STOP Trouble STOP Operating mode (COOL) COOL operation PROTECTION DEVICE PROTECTION DEVICE SELF HOLD RELEASE SELF HOLD Operating mode...

  • Page 27: Cooling Operation

    COOLING OPERATION COOL operation Four-way valve/OFF Initial COOLING Vane intial setting Vane 60 deg downward angle 70 deg downward angle Fan speed Downward discharge 1 hour Vane horizontal Vane setting notch airflow Compressor thermostat Allowance cancel 3-minute time delay 6-minute Aliowance time delay period...

  • Page 28: Heating Operation

    HEATING OPERATION Heat operation w 11 w 15 PKH-FK Intial Type Heating area HEATING Defrost release 3-minute Vane intial setting Vane setting notch Auxiliary heater Defrost 30 min. elaspe Indoor coil Defrosting Outdoor unit trouble thermstor is 60¡C or higher Four-way valve ON FAN speed Low notti...

  • Page 29: Dry Operation

    DRY OPERATION operation Four-way valve / OFF Initial dry operation Vane Vane intial setting setting notch w 12 Room tempereature is 64°F or lower During compressor ON 3-minute 3-minute compressor time delay operation Compressor & Compressor & thermostat ON thermostat 10-minute Compressor ON compressor...

  • Page 30: Microprocessor Control

    UP/DOWN DISCHARGE STOP switching. AUTO RETURN CHECK TEST RUN CHECK TEST RUN TEST RUN switching. MITSUBISHI ELECTRIC CHECK mode switching. (Self diagnostic trouble shooting) Non-polar, two-wire cable Indoor maxinmum length 500 meters unit Signal Indoor controller board INPUT from indoor unit...

  • Page 31: Indoor Unit Control

    STOP DISCHARGE each time WARMER or COOLER button is pressed. AUTO RETURN CHECK TEST RUN CHECK TEST RUN MITSUBISHI ELECTRIC <COOL operation time chart> The room temperature The room temperature Operation starts by Operation stops by displayed on Remote displayed on Remote...
  • Page 32 (1) Compressor control 1 3-minute time delay To 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 set tempera- ture.
  • Page 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/DOWN botton.
  • Page 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 at 200 pulse/sec.
  • Page 35 CHECK TEST RUN CHECK TEST RUN NOTE : Set temperature changes by 2˚F in the range 66~86˚F, MITSUBISHI ELECTRIC each time WARMER or COOLER button is pressed. <DRY operation time chart> The room temperature The room temperature Operation starts by...
  • Page 36 <Display in HEAT operate> AUTO RETURN CHECK TEST RUN CHECK TEST RUN "STAND BY" is displayed from HEAT operation start until warm MITSUBISHI ELECTRIC air begins to blow. "DEFROST" is displayed during defrosting. <HEAT operation time chart> The room temperature The room temperature...
  • Page 37 (1) Compressor control 13-minute time delay To prevent overload, the compressor will not start within 6, minutes after stop. 2The 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 higher than the set temperature.
  • Page 38 (3) Auto vane control (a) STOP mode (fixed operation) (!) The discharge direction at the start-up of HEAT operation is the same as that of the previous operation. (@) The discharge direction can be charged by the remote controller setting. (only for New models) 10°...
  • Page 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 difference 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 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.
  • Page 40 AUTO RETURN CHECK TEST RUN CHECK TEST RUN each time WARMER or COOLER button is pressed. MITSUBISHI ELECTRIC Once the desired temperature is set, operation mode is switched automatically between COOL and HEAT according to room temperature. (1) Initial mode 1 When AUTO operation starts after unit OFF.
  • Page 41 UP/DOWN STOP DISCHARGE AUTO RETURN CHECK TEST RUN CHECK TEST RUN MITSUBISHI ELECTRIC <Remote controller display> discharge downward discharge Available in COOL operation with fan speed on HIGH or in HEAT operation. Unavailable in DRY operation. If fan speed changes from LOW to HIGH during 30°...
  • Page 42 CHECK TEST RUN START. 3. Press TIMER HOURS button to set desired time. MITSUBISHI ELECTRIC Time setting is in 1 hour units for up to 24 hours. Each time HOURS button is pressed, set time increases by 1 hour. When HOURS button is pressed and held, the set time increases by 1 hour every 0.5 seconds.
  • Page 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 HEAT operation.
  • Page 44 2-9 Interlock with ventilation system (LOSSNAY) Mr. SLIM/LOSSNAY interlock operation is available by using the optional parts listed below. (1) System organization Relay box (PZ-12RB-E) Relay box Mr. SLIM LOSSNAY Power supply LOSSNAY Mr. SLIM Power supply Remote display Remote adapter controller Remote...
  • Page 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) 1 2 3 4 5 6 7 8 9 0 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.

  • Page 46: Indoor Fan Control

    J1-7) Switch for fan speed during thermostat OFF in HEAT operation Provided : EXTRA LOW Not provided : LOW J1-8) Switch for fan speed during thermostat OFF in HEAT operation. Provided : EXTRA LOW or LOW (set with J1-7) Not provided : Low or HIGH (set with remote controller) J1-9) Switch for detecting abnormalities in the outdoor unit abnormality detection.

  • Page 47: Outdoor Unit Control

    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.
  • Page 48 3-5 Defrosting in HEAT mode <Defrosting time chart> Defrosting Defrosting starts. stops. Indoor unit Indoor fan 35degrees(SW5-3 OFF)or 20degrees(SW5-3:ON)discharge direction (Remote controller still displays set direction.) Auto vane Set direction Set direction Outdoor unit 4-way valve Bypass valve Outdoor fan Compressor (1) Start conditions A.
  • Page 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. Defrosting operation time Next defrost interval 3 minutes or below 120 minutes 3 to 7 minutes 80 minutes...
  • Page 50 3-7 Service functions (1) Compulsory defrositng 1When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting. During HEAT mode The compressor is ON. The outdoor coil temperature is being displayed by LED. (Outdoor controller board dip switch SW3-1 : OFF, SW3-2 : The outdoor coil thermistor reads 46°F or below.

  • Page 51: Troubleshooting

    TROUBLESHOOTING 1.TROUBLE IN TEST RUN Symptom Cause Check points The display “CENTRALLY 1) Wrong address setting of remote con- 1) Check the address setting of remote controller CONTROLLED” on remote troller/indoor controller board. and indoor controller. controller does not disap- 2) Timer adapter is connected to the 2) Make sure the timer adapter is used correctly.
  • Page 52 (3) To cancel the check mode, press the POWER button. In ON/OFF MITSUBISHI ELECTRIC remote ON/OFF control, press the remote ON/OFF switch. In central- ized control, turn OFF the POWER ON/OFF button of centralized con- troller. CHECK button NOTE: The latest check code is memorized, even if the check mode is cancelled by the way mentioned above.
  • Page 53 Check Diagnosis of malfunction Cause Check points code 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.
  • Page 54 3.SERVICE DATA INDICATION 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 : Turning SW1 ON clears the check code.
  • Page 55 ˚F 3-1 Outdoor coil temperature To obtain data on the outdoor coil tempera- ture, add the number of bits of lighting (Short 238 bits) (Short 238 bits) (Short 238 bits) LEDs, and see the graph below to find the temperature. (Open 8 bits) (Open 8 bits) (Open 8 bits)
  • Page 56 4. TROUBLESHOOTING ACCORDING TO CHECK CODE Blinking Diagnosis of malfunction Cause Check point Reversed phase Phases A , and A are con- Check the power supply connection. nected improperly. Open phase Phase A is open. Check the power supply. Contact of protector, such as Check each protector.
  • Page 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 wiring Mode...
  • Page 58 7. OTHER TROUBLES AND CAUSES Vanes do not work. Vane motor is damaged. Vane motor does not work. Vane motor relay is damaged. Limit swtich does not work. Connector is poorly connected. Limit switch is damaged. Vane motor is poorly assembled. The size of the cam is wrong.

  • Page 59: System Control

    SYSTEM CONTROL 1. VARIETY OF SYSTEM CONTROL FUNCTIONS Many units, installed at different locations, can be started 1 Group control with and controlled with a single remote controller. The remote a single remote controller can be mounted in a different location using a controller non-polar two-wire cable, which can be extended up to (See page 59.)
  • Page 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 Figure 1 (1) Connect the remote controller to the double terminal block on the indoor controller board of the master unit (No.0 unit).
  • Page 61 3. CONTROL USING TWO REMOTE CONTROLLERS : OPTIONAL REMOTE CONTROLLER (PAC-SK47RC) Two remote controllers can be used to control either one unit or a group of units. Units operate according to the latest com- mand from either of the two remote controllers. Before operation, be sure to set one remote controller as the "main controller"...
  • Page 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.
  • Page 63 6. MULTIPLE REMOTE CONTROL DISPLAY You can control serveral units with a multiple remote control display,by Indoor controller board wiring an optional multipe display adapter (PAC-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.

  • Page 64: Operating Procedure

    DISASSEMBLY INSTRUCTIONS Indoor unit PKH24FK OPERATING PROCEDURE PHOTOS&ILLUSTRATION 1. Removing the lower side of the indoor unit from the instal- Figure 1 lation plate (1) Remove the 2 screws. Hanger of indoor unit Hang the indoor unit hangers to the catches on the instal- lation plate.
  • Page 65 OPERATING PROCEDURE PHOTOS&ILLUSTRATION (8) Remove the screws of the indoor controller board case, Relay Photo 3 and pull out the indoor controller board case. Then the transformer and the capacitor and relay can be serviced. Transformer Capacitor Indoor controller board case Electrical parts box 5.
  • Page 66 OPERATING PROCEDURE PHOTOS 8. Removing the lineflow fan and the fan motor Photo 7 (1) Remove the left and right side panels. Screw Lineflow fan (2) Remove the grills. (3) Remove the electrical parts box. Fan motor (4) Remove the drain pan. (5) Loosen the screw that fixes the lineflow fan to the fan motor.
  • Page 67 13-4 Outdoor unit (PUH18EK) OPERATING PROCEDURE PHOTOS 1. Electrical parts Photo 1 (1) Remove top panel (3 screws in front, 2 screws in rear) Screws Top panel (2) Remove cover panel (1 screw). The panel is anchored by clicks to the side panel. Remove by pulling towards you.
  • Page 68 OPERATING PROCEDURE PHOTOS 3. Heat Exchanger, Compressor Photo 4 (1) Remove the rear panel (2 screws in front, 1 screw on the Screws 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.
  • Page 69 13-5 Outdoor unit (PUH24EK) OPERATING PROCEDURE PHOTOS 1. Electrical parts Screws Photo 1 (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.
  • Page 70 OPERATING PROCEDURE PHOTOS 3. Heat Exchanger, Compressor (1) Remove the rear / right side panel (2 screws in front, 1 screw Screws on the side, 3 screws in the rear). Photo 4 Remove the electrical box, valve bed, and open to the rear to remove (anchors attached).

  • Page 71: Part List

    PART LIST PKH18FK PKH24FK STRUCTURAL PARTS PKH30FK PKH36FK Part number that are circled not shown in the figure. Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 18FK 24FK 30FK 36FK R01 12G 661 RIGHT SIDE PANEL...
  • Page 72 PKH-18FK PKH-24FK PKH-30FK PKH-36FK Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 18FK 24FK 30FK 36FK T7W BOO 762 FAN MOTOR T7W B01 762 R01 12G 105 RUBBER MOUNT R01 16G 105 R01 12G 115 RIGHT LINEFLOW FAN R01 16G 115 R01 12G 114...
  • Page 73 Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) 18FK 24FK 30FK 36FK Symbol R01 Z61 102 BEARING MOUNT R01 KV5 102 T7W B02 529 DRAIN PAN T7W B03 529 R01 12G 223 VANE MOTOR R01 12G 002 AUTO VANE R01 16G 002 R01 12G 621...
  • Page 74 PUH18EK FUNCTIONAL PARTS...
  • Page 75 w This part is not shown in the illustration. Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 18EK R01 A00 115 PROPELLER OUTDOOR FUNCTION T7W 850 763 FAN MOTOR S6V-85FPH T7W A30 315 OUTDOOR CONTROLLER BOARD O.B.
  • Page 76 PUH24EK FUNCTIONAL PARTS...
  • Page 77 w This part is not shown in the illustration. Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) 24EK Symbol R01 A00 115 PROPELLER OUTDOOR FUNCTION T7W 851 763 FAN MOTOR S6V-60FPP MF1,2 T7W A30 315 OUTDOOR CONTROLLER BOARD O.B.
  • Page 78 PUH30/36EK FUNCTIONAL PARTS 10·11 17·18 30·31 19·20 13·14...

  • Page 79: Way Valve

    w This part is not shown in the illustration. Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 30EK 36EK R01 A00 115 PROPELLER OUTDOOR FUNCTION T7W 852 763 FAN MOTOR VC086DC MF1,2 T7W A30 315 OUTDOOR CONTROLLER BOARD O.B.
  • Page 80 PUH18EK STRUCTURAL PARTS Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 18EK R01 A08 668 FRONT PANEL OUTDOOR FUNCTION R01 A08 661 SERVICE PANEL R01 A08 662 SIDE PANEL R01 A00 675 FAN GUARD R01 A00 641 TOP PANEL R01 A00 658...
  • Page 81 PUH24EK STRUCTURAL PARTS Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 24EK R01 A00 641 TOP PANEL R01 A11 668 FRONT PANEL R01 A00 675 FAN GUARD R01 A11 661 SERVICE PANEL R01 A11 662 SIDE PANEL (LEFT) R01 A11 682 REAR PANEL...
  • Page 82 PUH30/36EK STRUCTURAL PARTS Q'ty / set Wiring Remarks Parts No. Parts Name Specifications Diagram (Drawing No.) Symbol 30EK 36EK R01 A14 641 TOP PANEL R01 A14 668 FRONT PANEL R01 A00 675 FAN GUARD R01 A14 661 SERVICE PANEL R01 A14 662 SIDE PANEL (LEFT) R01 A14 682 REAR PANEL...

  • Page 83: Optional Parts

    OPTIONAL PARTS 1. REFRIGERANT PIPES FOR model: PKH18/24FK Part No PAC-05FFS-E PAC-07FFS-E PAC-10FFS-E PAC-15FFS-E Pipe length Pipe size OD Liquid : 3/8 Gas : 5/8 Connection method Indoor unit : Flared Outdoor unit : Flared FOR model : PKH30/36FK Part No PAC-SC51PI-E PAC-SC52PI-E PAC-SC53PI-E...
  • Page 84 BACK AHEAD the indication reverses in 10 minutes unit. SET BACK Set back display MITSUBISHI ELECTRIC Day setting button : Used to adjust the day of the week. Daily timer dislay BACK Pressing button moves the day light display in the order of S M T W Weekly timer button : Used to set the weekly timer.
  • Page 85 DUAL D U A L C E N T R A L O P E R A T I O N CENTRAL MITSUBISHI ELECTRIC 10 9 8 7 6 5 4 3 2 1 1 1 7 5-2. Functions POWER ON/OFF switch Operation ON/OFF switch.
  • Page 86 5-3 Connection method (1) Connections in the power supply cord. 1. Connect the power supply cord to the power supply terminal-block and fix it in-place with a tie-wrap. Connect a single phase 200V AV (220, 230, 240V) to A N. As E is the GND terminal, be sure to ground the earth wire.
  • Page 87 6. PROGRAM TIMER ADAPTER This adapter is needed when a program timer(PAC-SK65PT)or a centralized remote controller(PAC-805RC)is used. Part No. PAC-825AD 6-1 Parts included 1 ADAPTER··························x1 2 3-core cable ···························x1 3 3-core cable ···························x1 Length : 2m (6' 7") Length : 2m (6' 7") 4 4-core cable ···························x1 5 5-core cable ···························x1 Length : 2m (6' 7")
  • Page 88 1997 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD. New publication, effective Jun. 1997 Issued in Jun. 1997. No. OC120 5020 Specifications subject to change without notice...
  • Page 89 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 change without notice.

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