Mitsubishi PKH-1.6GKLH Technical & Service Manual
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Mitsubishi PKH-1.6GKLH Technical & Service Manual

Pkh series. wall mounted
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Indoor unit
[ Model names ]
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
Indoor unit
Remote controller
[ Service Ref. ]
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
ON/OFF
Revision :
• The indicated No. of CORNER
• Some descriptions have been
• Please void OC229.
Note :
• This manual does not cover the
CONTENTS
1. PART NAMES AND FUNCTIONS ....................... 2
2. SPECIFICATIONS ............................................... 4
3. DATA .................................................................... 6
4. OUTLINES AND DIMENSIONS ........................ 14
5. WIRING DIAGRAM ............................................ 15
7. OPERATION FLOW-CHART ............................. 17
8. MICROPROCESSOR CONTROL ..................... 21
9. TROUBLESHOOTING ....................................... 41
10. SYSTEM CONTROL .......................................... 51
11. DISASSEMBLY PROCEDURE .......................... 56
12. PARTS LIST ....................................................... 60
13. OPTIONAL PARTS ............................................ 63
October 2012
No.OC229
REVISED EDITION-A
COVER (page 62) has
been corrected in REVISED
EDITION-
A.
modified.
following outdoor units. When
servicing them, please refer to
the service manual No.OC128
REVISED EDITION-A and this
manual in a set.
[Service Ref.]
PUH-1.6VKA
2
PUH-2VKA
2

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Summary of Contents for Mitsubishi PKH-1.6GKLH

  • Page 1: Table Of Contents

    [ Model names ] [ Service Ref. ] COVER (page 62) has PKH-1.6GKL been corrected in REVISED PKH-1.6GKL EDITION- • Some descriptions have been PKH-1.6GKLH modified. PKH-1.6GKLH • Please void OC229. PKH-2GKL PKH-2GKL Note : PKH-2GKLH • This manual does not cover the PKH-2GKLH following outdoor units.

  • Page 2: Part Names And Functions

    Use the specified refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.
  • Page 3 ● Wireless remote controller ● When cover is open. ADDRESS display display display Displays the refrigerant address. SET TEMP. display indicates desired tempera- Lights up while transmission to the indoor unit ture set. UNIT NO. display is mode using switches. Displays the number of unit.

  • Page 4: Specifications

    SPECIFICATIONS PKH-1.6GKL Service Ref. Item PKH-1.6GKLH Function Cooling Heating 4,500 4,650 (5,450) Capacity Btu/h 15,350 15,900 (18,600) Total input 1.51 1.48 (2.28) PKH-1.6GKL Service Ref. PKH-1.6GKLH Power supply(phase, cycle, voltage) Single, 50Hz, 220-240V Input 0.07 0.07 (0.87) Running current 0.33 0.33 (3.66)
  • Page 5 PKH-2GKL Service Ref. Item PKH-2GKLH Function Cooling Heating 5,500 6,250 (7,050) Capacity Btu/h 18,800 21,300 (24,100) Total input 2.27 2.29 (3.09) PKH-2GKL Service Ref. PKH-2GKLH Power supply(phase, cycle, voltage) Single, 50Hz, 220-240V Input 0.07 0.07 (0.87) Running current 0.33 0.33 (3.66) Starting current 0.40 0.40 (3.73)

  • Page 6: Data

    DATA 1. PERFORMANCE DATA 1) COOLING CAPACITY<1> PKH-1.6GKL PKH-1.6GKLH Outdoor intake air D.B.(°C) Indoor Indoor Intake air Intake air D.B.(°C) W.B.(°C) SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 4540 2996 0.66 1.21 4415 2914 0.66 1.26 4253 2807 0.66 1.36 4834 2610 0.54...
  • Page 7 COOLING CAPACITY<2> PKH-1.6GKL PKH-1.6GKLH Outdoor intake air D.B.(°C) Indoor Indoor Intake air Intake air D.B.(°C) W.B.(°C) SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 4081 2693 0.66 1.46 3899 2573 0.66 1.55 3706 2446 0.66 1.65 4355 2352 0.54 1.49 4167 2250 0.54...
  • Page 8 COOLING CAPACITY<3> PKH-2GKL PKH-2GKLH Outdoor intake air D.B.(°C) Indoor Indoor Intake air Intake air D.B.(°C) W.B.(°C) SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 5549 3274 0.59 1.82 5397 3184 0.59 1.90 5198 3067 0.59 2.04 5908 2777 0.47 1.86 5752 2704 0.47 1.94 5543...
  • Page 9 COOLING CAPACITY<4> PKH-2GKL PKH-2GKLH Outdoor intake air D.B.(°C) Indoor Indoor Intake air Intake air D.B.(°C) W.B.(°C) SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 0.59 0.59 0.59 4988 2943 2.19 4765 2811 2.34 4530 2673 2.49 5323 2502 0.47 2.24 5093 2394 0.47 2.40 4852...
  • Page 10 Cooling capacity correction factors Refrigerant piping length(one way) Service Ref. PKH-1.6GKL 1.00 0.993 0.984 0.978 0.969 0.961 0.956 0.948 — — PKH-1.6GKLH PKH-2GKL 1.00 0.992 0.983 0.978 0.966 0.959 0.950 0.945 — — PKH-2GKLH CA : Capacity (W) 2) HEATING CAPACITY P.C.
  • Page 11 3. ELECTRICAL DATA Indoor unit 220V 0Hz 1phase Outdoor unit 220V 0Hz 1phase PKH-1.6GKL PKH-2GKL Indoor unit PKH-1.6GKLH PKH-2GKLH Service Ref. Outdoor unit PUH-1.6VKA PUH-2VKA Mode Cool Heat Cool Heat 4,550 6,150 Capacity(W) 4,400 5,400 (5,220) (6,820) 1.39 2.21 Total Input(kW) 1.43...
  • Page 12 4. STANDARD OPERATION DATA PKH-1.6GKL PKH-2GKL Without electric heater Service Ref. PKH-1.6GKLH PKH-2GKLH With electric heater Mode Cooling Heating Cooling Heating 4,650 6,250 Capacity 4,500 5,500 [5,450] [7,050] 1.48 2.29 Input 1.51 2.27 [2.28] [3.09] Indoor unit PKH-1.6GKL PKH-2GKL Without electric heater Service Ref.
  • Page 13 6. NOISE CRITERION CURVES PKH-1.6/2GKL SPL(dB) LINE NOTCH PKH-1.6/2GKLH NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz UNIT WALL Ambient temperature 27 Test conditions are based on JIS Z8731 MICROPHONE OC229A...

  • Page 14: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : mm 1. INDOOR UNIT PKH-1.6GKL / PKH-2GKL PKH-1.6GKLH / PKH-2GKLH Front view Left side Right side 715 Air intake Less than 15 340 Air intake 280 Air intake Knockout hole Knockout hole for left piping.

  • Page 15: Wiring Diagram

    WIRING DIAGRAM PKH-1.6GKL / PKH-2GKL PKH-1.6GKLH / PKH-2GKLH The black square ( ) indicates a switch position. OC229A...

  • Page 16: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PKH-1.6GKL, PKH-1.6GKLH / PUH-1.6VKA Unit : mm PKH-2GKL, PKH-2GKLH / PUH-2VKA <-Way valve solenoid coil> Heating ON Refrigerant flow in cooling Cooling OFF Refrigerant flow in heating High pressure control switch Oil separator Refrigerant pipe Outdoor unit...

  • Page 17: 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 18 COOLING OPERATION COOL operation Four-way valve/OFF Initial COOLING Vane initial setting Vane 50 deg downward angle 60 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 Allowance time delay period...
  • Page 19 HEATING OPERATION Heat operation PKH-GKLH initial Type Heating area HEATING 3-minute Defrost release Vane setting notch Vane initial setting Auxiliary heater Defrost 30 min. elapse defrosting Pipe temperature Outdoor unit trouble is 60°C or higher Four-way valve ON FAN speed Low notch Hot adjust in process...
  • Page 20 DRY OPERATION operation Four-way valve / OFF Initial dry operation Vane Vane initial setting setting notch Room temperature is 18°C or lower During compressor ON -minute -minute compressor time delay operation Compressor & Compressor & thermostat thermostat ON 10-minute Compressor ON compressor time completes Compressor ON...

  • Page 21: Microprocessor Control

    MICROPROCESSOR CONTROL 1. OUTLINE OF MICROPROCESSOR CONTROL Remote controller board OUTPUT to remote controller INPUT to remote controller ● OFF-ON switching ● Processes and transmits orders Remote controller ● COOL/DRY-AUTO-HEAT selector switching ● LCD indicator ● Thermostat setting ● TIMER mode selector-switching and Timer setting.
  • Page 22 2. INDOOR UNIT CONTROL 2-1 COOL operation <How to operate> 1 Press POWER ON/OFF button. ADDRESS UNIT No. FUNCTION No. °C SELECTION No. 2 Press the MODE button to display “ f ”. FUNCTION 3 Press the TEST RUN TEMP. button to set the desired temperature. CHECK TEMP.
  • Page 23 (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.
  • Page 24 <Auto vane drive> (a) The vane is driven by DC12V motor. (b) Airflow direction is selected depends on the number of pulse were sent. (c) Before start driving the auto vane, detect the standard position first, output the number of pulse to each Airflow. (d) The speed of the auto vane drive for both open and close are set at 200 pulse/sec.
  • Page 25 2-2 DRY operation <How to operate> 1 Press POWER ON/OFF button. 2 Press the MODE button to display “ ADDRESS ”. UNIT No. FUNCTION No. °C SELECTION No. 3 Press the TEMP. button to set the desired temperature. FUNCTION TEST RUN NOTE: The set temperature changes 1°C when the CHECK TEMP.
  • Page 26 (1) Compressor control 1 -minute time delay To prevent overload, the compressor will not start within -minutes after stop. 2 The compressor runs when the room temperature is higher than the set temperature. The compressor stops when the room temperature is equal to or lower than the set temperature. 3 The compressor stops in check mode or during protective functions.
  • Page 27 <How to operate> 2-3 HEAT operation 1 Press POWER ON/OFF button. 2 Press the MODE button to display “ ”. ADDRESS UNIT No. FUNCTION No. 3 Press the °C TEMP. button to set the desired temperature. SELECTION No. NOTE: The set temperature changes 1°C when the button is FUNCTION TEST RUN...
  • Page 28 (2) Indoor fan control (a) Normal control (!)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- and SW1-6, If the pipe temperature becomes more than  degrees below the room temperature during the thermostat OFF, the indoor fan will stop.
  • Page 29 (4) Booster heater control [PKH-1.6GKLH, PKH-2GKLH] When the room temperature is  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.
  • Page 30 2-4 AUTO operation (Automatic COOL/HEAT change over operation) <How to operate> 1 Press POWER ON/OFF button. ADDRESS UNIT No. 2 Press the MODE button to display “ ”. FUNCTION No. °C SELECTION No. 3 Press the TEMP. button to set the desired temperature. FUNCTION TEST RUN CHECK...
  • Page 31 2-5 Auto vane control <How to operate> To change the airflow direction, press VANE button. ADDRESS UNIT No. FUNCTION No. °C SELECTION No. NOTE: Airflow direction can be set by the indoor dip switch SW-1. FUNCTION TEST RUN CHECK TEMP. ON/OFF 10°...
  • Page 32 <How to operate> 1 Press the ON/OFF button to turn it ON. 2 Press the STOP or START button (TIMER SET). · Time can be set while the following symbol is displayed. OFF timer : A ▼ is displayed. ON timer : A is displayed.
  • Page 33 (1) Pipe temperature code During the test run, the pipe temperature code from 1 to 1 is displayed on the remote controller instead of room temper- ature. The code should fall with the lapse of time in normal COOL operation, and should rise in normal HEAT operation. Code Pipe -40~2(1)°C...
  • Page 34 2-7 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 35 2-8 Dip switch functions The black square ( ) indicates a switch position. Each figure shows the initial setting. 1. On remote controller board (Option: Wired remote controller) (1) SW17 (Address selector) 1 2    6 7 8 SW17-1~6) For address setting SW17-7) When two remote controllers are used, this switch sets the controller function.
  • Page 36 Switch to set the output of phase-controlled indoor fan motor. Address setting is available at any time. The initial setting is based on each capacity. PKH-1.6GKL PKH-2GKL Service Ref. PKH-1.6GKLH PKH-2GKLH 1 2  1 2  (7) SW8 1 2   SW8-1~) Not for use.
  • Page 37 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 temperature. 3-2 Outdoor unit control The outdoor unit turns ON/OFF the cooling/heating operation according to orders given from the indoor unit.
  • Page 38 3-5 Defrosting in HEAT mode <Defrosting time chart> Defrosting Defrosting starts. stops. Indoor unit Indoor fan Auto vane Set direction Set direction Outdoor unit 4-way valve Bypass valve Outdoor fan Compressor (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.
  • Page 39 (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  minutes or below 120 minutes  to 7 minutes 80 minutes...
  • Page 40 3-7 Service functions (1) Compulsory defrosting 1 When 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 SW-1: OFF, SW-2: ON) ●...

  • Page 41: Troubleshooting

    TROUBLESHOOTING 1. TROUBLE IN TEST RUN Symptom Cause Check points The display “CENTRALLY 1) Wrong address setting of remote controller/ 1) Check the address setting of remote controller and CONTROLLED” on remote indoor controller board indoor controller. controller dose not disappear. 2) Timer adapter is connected to the remote con- 2) Make sure the timer adapter is used correctly.
  • Page 42 2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER (WIRELESS REMOTE CONTROLLER) (1) Turn on the main power of the unit. Remove the battery cover on the back side of (2) Set the adjusting switch on the back of the the wireless remote controller, display will start flashing when the “Set”...
  • Page 43 (WIRED REMOTE CONTROLLER) : Optional part 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 address and the check code are displayed alternately at one-second CHECK mode intervals.
  • Page 44 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 wire 2) Check with another remote controller. If “EO” (Indoor controller does not 2) Signal transmitting/receiving cir- is still indicated, replace the indoor controller respond to remote controller cuit is abnormal.
  • Page 45 3. SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARD Setting dip switches SW2 and SW 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 46 3-1 Outdoor coil temperature To obtain data on the outdoor coil temperature, add the number of bits of lighting LEDs, and see the graph below to find the temperature. Short Open 3-2 Fan output step To obtain data on the fan output step, add the number of bits of lighting LEDs, and see the graph below to find the fan rota- tional frequency.
  • Page 47 4. TROUBLESHOOTING ACCORDING TO CHECK CODE Blinking Diagnosis of malfunction Cause Check point Reversed phase Phases L , and L are con- Check the power supply connection. nected improperly. ● Phase L ● Check the power supply. Open phase is open. ●...
  • Page 48 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 49 7. OTHER TROUBLES AND CAUSES Vane motor is damaged. Vanes do not work. Vane motor does not work. Vane motor relay is damaged. Connector is poorly connected. Vane motor is poorly assembled. Indoor controller board is damaged. Unit stops after  to 20 Refer to check code on remote controller display.
  • Page 50 9. How to check the parts PKH-GKLH, PKH-GKL Parts name Check points Room temperature Disconnect the connector, then measure the resistance with a tester. thermistor (RT1) (Surrounding temperature 10°C~0°C) Pipe temperature thermistor (RT2) Normal Abnormal (Refer to the thermistor) .k ~9.6k Open or short Fan motor (MF)

  • Page 51: System Control

    SYSTEM CONTROL 1. VARIETY OF SYSTEM CONTROL FUNCTIONS [Only optional wired remote controller is available the following system.] 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...
  • Page 52 2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER A maximum of 0 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 53 3. CONTROL USING TWO REMOTE CONTROLLERS : OPTIONAL REMOTE CONTROLLER (PAR-JA240KAT-E) 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 54 NOTE1 : Install the relay box where you can be serviced it easily. NOTE2 : For control circuit wiring, use a wire of No. 1 AWG or a control cable according to the power supply of control circuit. NOTE : When the power supply of the control circuit is 220/20V AC, ●...
  • Page 55 6. MULTIPLE REMOTE CONTROL DISPLAY You can control several units with a multiple remote control display, by wir- Indoor controller board ing an optional multiple display adapter (PAC-SA88HA-E) with relays and lamps on the market. 6-1 How to wire (1) Connect the multiple display adapter to the connector CN1 on the indoor controller board.

  • Page 56: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKH-1.6GKL / PKH-2GKL PKH-1.6GKLH / PKH-2GKLH OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Figure 1) Hook 1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE (1) Remove the left/right corner box of the indoor unit. (2) Hold and pull down the lower and both ends of the indoor unit, and remove the ▼...
  • Page 57 OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Photo 4) 4. REMOVING THE POWER BOARD (1) Remove the front panel. (See Photo 1) (2) Remove the electrical box (2 screws). (See Photo 2) Power board () Disconnect the whole connector in the control board. (4) After lifting the controller case with pressing it’s convex section, remove the controller case and the control board simultaneously.
  • Page 58 OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Photo 9) 9. REMOVING THE FAN MOTOR (1) Remove the terminal block cover. (2) Remove the front panel. (See Photo 1) Motor cover () Remove the electrical box. (See Photo 8) () Remove the nozzle assembly. (See Photo 7) () Remove the fan motor leg fixing  screws.
  • Page 59 OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Photo 14) 13. REMOVING the SIGNAL RECEIVING P.C. BOARD Front (1) Remove the terminal block cover. panel (2) Disconnect the connector <yellow> for the wireless remote Set screws controller. () Remove the front panel. (See Photo 1) () Remove the 2 screws and signal receiving P.C.

  • Page 60: Parts List

    PARTS LIST (non-RoHS compliant) ELECTRICAL PARTS PKH-1.6GKL / PKH-1.6GKLH PKH-2GKL / PKH-2GKLH Wiring Recom- PKH- Remarks Specifications Parts No. Parts Name Diagram mended (Drawing No.) Symbol Q'ty GKLH GKLH FAN MOTOR PM4V30-K T7W A01 762 LINE FLOW FAN R01 09Y 114...
  • Page 61 PARTS LIST (non-RoHS compliant) From the preceding page. Part numbers that are circled are not shown in the figure. Wiring Recom- PKH- Remarks Specifications Parts No. Parts Name Diagram mended (Drawing No.) Symbol Q'ty GKLH GKLH CAPACITOR ×440V R01 588 255 ROOM TEMPERATURE THERMISTOR T7W E05 202 T7W E68 480...
  • Page 62 PARTS LIST (non-RoHS compliant) STRUCTURAL PARTS PKH-1.6GKL / PKH-1.6GKLH PKH-2GKL / PKH-2GKLH Wiring PKH- PKA- Recom- Remarks Parts Name Diagram Parts No. Specifications mended 1.6GKL 1.6GKLH (Drawing No.) Symbol Q'ty 2GKL 2GKLH R01 89Y 651 FRONT PANEL R01 A16 500...

  • Page 63: Optional Parts

    OPTIONAL PARTS 1. REFRIGERANT PIPES Service Ref. : PKH-1.6GKL / PKH-2GKL : PKH-1.6GKLH / PKH-2GKLH Part No PAC-05FFS-E PAC-07FFS-E PAC-10FFS-E PAC-15FFS-E Pipe length Pipe size O.D. Liquid: 9.52 Gas: 15.88 Connection method Indoor unit:Flared Outdoor unit:Flared Note 1. How to connect refrigerant pipes.
  • Page 64 2-3. 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 6-wire cable as shown in the figure below NOTE: While the program timer is connected to the remote controller, the 2-wire cable To indoor unit...
  • Page 65 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 66 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 AC (220, 20, 20V) to A N. As E is the GND terminal, be sure to ground the earth wire.
  • Page 67 6. PROGRAM TIMER ADAPTER This adapter is needed when a program timer (PAC-SC2PTA) or a centralized remote controller (PAC-80RC) is used. Part No. PAC-82AD 6-1 Parts included 1 ADAPTER 2 -core cable 3 -core cable Length : 2m (6' 7") Length : 2m (6' 7") 4 -core cable 5 -core cable...
  • Page 68 8. Program Timer Part No. PAC-SC2PTA HEAD OFFICE : TOKYO BLDG., 2-7-, MARUNOUCHI, CHIYODA-KU TOKYO 100-810, JAPAN cCopyright 2000 MITSUBISHI ELECTRIC CORPORATION Distributed in Oct. 2012 NO.OC229 REVISED EDITION-A Distributed in Aug. 2000 NO.OC229 2 New publication, effective Oct. 2012 Specifications are subject to change without notice.

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