Mitsubishi Electric Mr.Slim PKH-2FKA Technical & Service Manual

Wall mounted pkh series

Hide thumbs

Table of Contents

Quick Links

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

Series PKH

Indoor unit

[ Model names ]

PKH-2FKA

PKH-2.5FKA

PKH-3FKA

PKH-4FKSA

Indoor unit

CHECK

REMOTE CONTROLLER

Wall Mounted

[ Service Ref. ]

PKH-2FKA

PKH-2.5FKA

PKH-3FKA

PKH-4FKSA

FILTER

CHECK MODE

TEST RUN

REVISED EDITION-A

• PKH-2.5FKA

PKH-4FKSA

REVISED EDITION-A.

• Please void OC132 .

• This manual does not cover

outdoor units. When servicing

them, please refer to the service

manual No.OC128 REVISED

EDITION-C and this manual in

a set.

[Service Ref.]

PUH-2VKA

PUH-2NKA

PUH-2.5VKA

PUH-2.5NKA

PUH-3VKA

PUH-3YKA

PUH-3NKA

PUH-4YKSA

PUH-4TKSA

CONTENTS

1. TECHNICAL CHANGES·······················2

2. PART NAMES AND FUNCTIONS ········3

3. SPECIFICATIONS·································5

4. DATA ···················································13

5. OUTLINES AND DIMENSIONS··········20

6. WIRING DIAGRAM·····························24

7. REFRIGERANT SYSTEM DIAGRAM ······26

8. OPERATION FLOW-CHART ··············28

9. MICROPROCESSOR CONTROL·······32

10. TROUBLESHOOTING ························54

11. SYSTEM CONTROL ···························63

12. DISASSEMBLY PROCEDURE ···········68

13. PARTS LIST········································71

14. OPTIONAL PARTS ·····························80

2001

No. OC132

, PKH-3FKA

and

are added in

PUH-2VKA

PUH-2NKA

, PUH-2.5VKA

, PUH-2.5NKA

PUH-3VKA

PUH-3YKA

PUH-3NKA

, PUH-4YKSA

Table of Contents

Summary of Contents for Mitsubishi Electric Mr.Slim PKH-2FKA

Page 1: Table Of Contents
Indoor unit • This manual does not cover [ Model names ] [ Service Ref. ] outdoor units. When servicing them, please refer to the service PKH-2FKA manual No.OC128 REVISED PKH-2FKA EDITION-C and this manual in PKH-2.5FKA a set. PKH-2.5FKA PKH-2.5FKA...
Page 2: Technical Changes
TECHNICAL CHANGES PKH-2.5FKA PKH-2.5FKA PKH-3FKA PKH-3FKA PKH-4FKSA PKH-4FKSA •NOSE shape has changed. •UNDER PLATE shape has changed. •TOP PLATE shape has changed. •DRAIN PAN shape has changed. •BOX ASSEMBLY shape has changed. •The specifications of these power supply voltages have been added: 50Hz 220-230-240V; 50Hz 380-400-415V.
Page 3: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor Unit Air intake Filter Air intake grille (Removes dust and dirt from the intake air.) Room air is suctioned in here. Guide vane Auto vane Air flow can be changed to horizontally by moving the Guide vane to the left or right.
Page 4: Operation Lamp
Display In this display example on CENTRALLY r display display the bottom left, a condition CONTROLLED display where all display lamps light The current time , start time and stop The selected fan speed is displayed. time can be displayed in ten second is shown for explanation pur- This indicates when the unit is con- intervals by pressing the time switch...
Page 5: Specifications
SPECIFICATIONS 50Hz Service Ref. PKH-2FKA Item Function Cooling Heating 5,500 6,250 Capacity Btu/h 18,800 21,300 Total input 2.27 2.29 Service Ref. PKH-2FKA Power supply(phase,cycle,voltage) Single Phase, 50Hz, 220-230-240V Input 0.07 0.07 Running current 0.32 0.32 Starting current 0.40 0.40 External finish Munsell 3.4Y 7.7/0.8(White)
Page 6 50Hz Service Ref. PKH-2.5FKA PKH-2.5FKA Item Function Cooling Heating 6,500 7,200 Capacity Btu/h 22,200 24,600 Total input 2.56 2.33 Service Ref. PKH-2.5FKA PKH-2.5FKA Power supply(phase,cycle,voltage) Single Phase, 50Hz, 220-230-240V Input 0.095 0.095 Running current 0.44 0.44 Starting current 0.80 0.80 External finish Munsell 3.4Y 7.7/0.8(White) Heat exchanger...
Page 7 50Hz Service Ref. PKH-3FKA PKH-3FKA Item Function Cooling Heating 7,900 9,100 Capacity Btu/h 27,000 31,000 Total input 3.25 3.04 Service Ref. PKH-3FKA PKH-3FKA Power supply(phase,cycle,voltage) Single Phase, 50Hz, 220-230-240V Input 0.095 0.095 Running current 0.44 0.44 Starting current 0.80 0.80 External finish Munsell 3.4Y 7.7/0.8(White) Heat exchanger...
Page 8 50Hz Service Ref. PKH-4FKSA PKH-4FKSA Item Function Cooling Heating 9,500 10,700 Capacity Btu/h 32,400 36,500 Total input 3.31 3.30 Service Ref. PKH-4FKSA PKH-4FKSA Power supply(phase,cycle,voltage) Single Phase, 50Hz, 220-230-240V Input 0.114 0.114 Running current 0.53 0.53 Starting current 0.90 0.90 External finish Munsell 3.4Y 7.7/0.8(White) Heat exchanger...
Page 9 60Hz Service Ref. PKH-2FKA Item W1/ W2 Function Cooling Heating 5,800/5,100 6,600 Capacity Btu/h 19,800/17,400 22,500 Total input 2.49/2.91 2.53 Service Ref. PKH-2FKA Power supply(Phase, cycle, voltage) Single. 60Hz. 220V 0.08 Input 0.08 Running current 0.37 0.37 Starting current 0.50 0.50...
Page 10 60Hz Service Ref. PKH-2.5FKA PKH-2.5FKA Item w1/ w2 Function Cooling Heating 7,000/5,900 8,000 Capacity 23,900/20,100 27,300 Btu/h Total input 3.01/3.53 2.90 Service Ref. PKH-2.5FKA PKH-2.5FKA Power supply(Phase, cycle, voltage) Single. 60Hz. 220V Input 0.095 0.095 Running current 0.44 0.44 0.70 0.70 Starting current Munsell 3.4Y 7.7/0.8(White)
Page 11 60Hz Service Ref. PKH-3FKA PKH-3FKA Item w1/ w2 Function Cooling Heating 7,800/6,900 9,500 Capacity Btu/h 26,600/23,500 32,400 Total input 3.62/4.23 3.43 Service Ref. PKH-3FKA PKH-3FKA Power supply(Phase, cycle, voltage) Single. 60Hz. 220V 0.095 0.095 Input Running current 0.44 0.44 Starting current 0.70 0.70 Munsell 3.4Y 7.7/0.8(White)
Page 12 60Hz Service Ref. PKH-4FKSA PKH-4FKSA Item w1/ w2 Function Cooling Heating 10,400/9,400 12,200 Capacity Btu/h 35,500/32,100 41,600 Total input 4.25/5.12 4.07 Service Ref. PKH-4FKSA PKH-4FKSA Power suppl(Phase, cycle, voltage) Single. 60Hz. 220V 0.114 0.114 Input Running current 0.53 0.53 Starting current 0.80 0.80 Munsell 3.4Y 7.7/0.8(White)
Page 13: Data
5,198 2.04 4,988 2.19 4,765 2.34 4,530 2.49 5,908 1.86 5,752 1.94 5,543 2.09 5,323 2.24 5,093 2.40 4,852 2.55 PKH-2FKA 6,271 1.89 6,124 1.97 5,905 2.13 5,677 2.30 5,440 2.46 5,193 2.63 6,638 1.93 6,511 2.01 6,285 2.18 6,050 2.35...
Page 14: Capacity(W)
Service Ref. P.C. P.C. P.C. P.C. P.C. P.C. W.B.°C 4,280 1.56 4,905 1.73 5,591 1.90 6,336 2.09 7,139 2.28 8,000 2.49 PKH-2FKA 4,098 1.68 4,713 1.86 5,380 2.05 6,100 2.25 6,871 2.46 7,693 2.68 3,939 1.79 4,521 1.98 5,167 2.19 5,874 2.41...
Page 15: Performance Curve
2. PERFORMANCE CURVE Cooling Heating INDOOR W.B.(:) INDOOR D.B. (:) INDOOR D.B. (:) INDOOR W.B.(:) -12-10 OUTDOOR D.B.(:) OUTDOOR W.B. (:)
Page 16 3. ELECTRICAL DATA 50Hz Indoor unit · · · · · 220V 50Hz 1phase Outdoor unit · · · 220V 50Hz 1phase / 380V 50Hz 3phase PKH-2.5FKA PKH-3FKA PKH-4FKSA Indoor unit PKH-2FKA PKH-2.5FKA PKH-3FKA PKH-4FKSA Service Ref. PUH-3YKA PUH-2VKA PUH-2.5VKA...
Page 17 3. ELECTRICAL DATA 60Hz Indoor unit · · · · · 220V 60Hz 1phase Outdoor unit · · · 220V 60Hz 1phase/3phases Rating condition (Cooling) ... Indoor D.B. 27:, W.B. 19: Outdoor D.B. 35: PKH-2.5FKA PKH-2FKA Indoor unit PKH-2.5FKA Service Ref. PUH-2NKA PUH-2.5NKA...
Page 18 4. STANDARD OPERATION DATA 50Hz PKH-3FKA PKH-4FKSA PKH-2.5FKA Service Ref. PKH-2FKA PKH-2.5FKA PKH-3FKA PKH-4FKSA Mode Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Capacity 5,500 6,250 6,500 7,200 7,900 9,100 7,900 9,100 9,500 10,700 Input 2.27 2.29 2.56 2.33...
Page 19 4. STANDARD OPERATION DATA 60Hz PKH-2.5FKA PKH-3FKA PKH-4FKSA PKH-2FKA PKH-2.5FKA PKH-3FKA PKH-4FKSA Service Ref. Mode Cooling Heating Cooling Heating Cooling Heating Cooling Heating 5,800 6,600 7,000 8,000 7,800 9,500 10,400 12,200 Capacity 2.49 2.53 3.01 2.90 3.62 3.43 4.25 4.07 Input PKH-2.5FKA...
Page 20: Outlines And Dimensions
OUTLINES AND DIMENSIONS 1. INDOOR UNIT Unit : mm PKH-2FKA...
Page 21 PKH-2.5FKA PKH-3FKA Unit : mm PKH-2.5FKA PKH-3FKA...
Page 22: Pkh-4Fksa
PKH-4FKSA Unit : mm PKH-4FKSA...
Page 23 2. REMOTE CONTROLLER Unit : mm(inch) FILTER FILTER CHECK CHECK CHECK MODE CHECK MODE TEST RUN TEST RUN Rear side wiring arrangement opening. CAUTION SW18 SW17...
Page 24: Wiring Diagram
WIRING DIAGRAM PKH-2FKA POWER SUPPLY ~(1 PHASE) AC220-240V 50Hz GRN/YLW AC220V 60Hz 11.1VAC 220V 230V 240V 14.2VAC CN4T FAN1 TRANSMISSION WIRES POWER TRANS TRANS DC12V LED2 5V CN6V VANE POWER LED1 12V TO OUTDOOR UNIT POWER CONNECTING WIRES DC12V CN21...
Page 25: Pkh-4Fksa
PKH-2.5FKA PKH-3FKA PKH-4FKSA PKH-2.5FKA PKH-3FKA PKH-4FKSA POWER SUPPLY ~ (1 PHASE) AC220-240V 50Hz GRN/YLW AC220V 60Hz 10VAC 240V 230V 220V 14.3VAC MODELS 2.5,3FKA 4FKSA 1 2 3 4 1 2 3 4 CN4T FAN1 TRANSMISSION WIRES POWER TRANS TRANS DC12V CN6V VANE LED2 5V...
Page 26: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PKH-2FKA / PUH-2VKA PUH-2VKA Unit : mm PKH-2.5FKA PKH-2.5FKA / PUH-2.5VKA , PUH-2.5VKA PKH-3FKA PKH-3FKA / PUH-3VKA PUH-3VKA / PUH-3YKA PUH-3YKA , PUH-3YKA High pressure control switch Oil separator Refrigerant pipe Outdoor unit Service (option) Indoor unit...
Page 27 PKH-2FKA / PUH-2NKA PUH-2NKA Unit : mm PKH-2.5FKA , PKH-2.5FKA / PUH-2.5NKA , PUH-2.5NKA Refrigerant flow in cooling Refrigerant flow in heating R.V.coil High pressure heating ON control switch Oil separator Service Outdoor unit Refrigerant pipe port 4-way valbe (option)
Page 28: 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 Operating mode STOP Trouble STOP (COOL) COOL operation PROTECTION DEVICE PROTECTION DEVICE SELF HOLD RELEASE SELF HOLD Operating mode...
Page 29: Cooling Operation
COOLING OPERATION COOL operation Four-way valve/OFF Initial COOLING Vane initial 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 Allowance time delay period...
Page 30: Heating Operation
HEATING OPERATION Heat operation PKH-FK Initial Type Heating area HEATING 3-minute Defrost release Vane setting notch Vane initial setting Auxiliary heater Defrost 30 min. elapse Indoor coil Defrosting Outdoor unit trouble thermistor is 60°C or higher Four-way valve ON FAN speed Low notch Hot adjust in process...
Page 31: Dry Operation
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 3-minute 3-minute compressor time delay operation Compressor & Compressor & thermostat ON thermostat 10-minute Compressor ON compressor time completes Compressor ON...
Page 32: Microprocessor Control
MICROPROCESSOR CONTROL 1. OUTLINE OF MICROPROCESSOR CON- INPUT to remote controller Remote controller board OUTPUT to remote controller Processes and transmits Remote controller OFF-ON switching. orders. LCD indicator COOL/DRY-AUTO-HEAT selector switching. Thermostat setting. TIMER mode selector-switching and Timer setting. FILTER HIGH-LOW fan speed switching.
Page 33: Indoor Unit Control
2. INDOOR UNIT CONTROL 2-1 COOL operation <How to operate> 1 Press POWER ON/OFF button. 2 Press the button to display “ f ”. 3 Press the i TEMP button to set the desired temperature. FILTER CHECK CHECK MODE NOTE: The set temperature changes 1°C when the TEST RUN button is press one time Cooling 19 to 30°C.
Page 34 5 Coil frost protection When indoor coil temperature becomes -15°C or below, coil frost protection will proceed as follows. <Start condition> After the compressor has been continuously operated for 3 minutes or more,and the indoor coil temperature has been -15°C or below for 3 minutes,the coil frost protection will start. <Coil frost protection>...
Page 35 (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 button.
Page 36 <Auto vane drive> (PKH-2FKA (a) The auto vane is driven by a 2.5 rpm motor. (b) Discharge direction can be selected between the No.1 and No.2 setting. (Initial setting is No.1) 10° 30° 60° 70° (c) Vane motor drive time Unit : sec.
Page 37 2-2 DRY operation <How to operate> 1 Press POWER ON/OFF button. 2 Press the button to display “ e ”. FILTER 3 Press the i TEMP button to set the desired temperature. CHECK CHECK MODE TEST RUN NOTE: The set temperature changes 1°C when the button is press one time Cooling 19 to 30°C.
Page 38 (1) Compressor control 13-minute time delay To prevent overload, the compressor will not start within 3 minutes after stop. 2The 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. 3The compressor stops in check mode or during protective functions.
Page 39 2-3 HEAT operation <How to operate> 1 Press POWER ON/OFF button. 2 Press the button to display “ g ”. 3 Press the i TEMP button to set the desired temperature. FILTER CHECK NOTE: The set temperature changes 1°C when the CHECK MODE TEST RUN button is press one time Cooling 17 to 28°C.
Page 40 (1) Compressor control 13-minute time delay. To prevent overload, the compressor will not start within 3, minutes after stop. 2The 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. 3The compressor stops in check mode or during protective functions.
Page 41 (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 changed by the remote controller setting. 10°...
Page 42 2-4 AUTO operation (Automatic COOL/HEAT change over operation) <How to operate> 1 Press POWER ON/OFF button. 2 Press the button to display “ ”. FILTER CHECK 3 Press the i TEMP button to set the desired temperature. CHECK MODE TEST RUN NOTE: The set temperature changes 1°C when the button is press one time Cooling 19 to 28°C.
Page 43 2-5 Auto vane control <How to operate> To change the air flow direction, press button. FILTER CHECK CHECK MODE TEST RUN <Remote controller display> 10° 30° 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 44 2-6 TIMER operation <Timer function> AUTO STOP ·········The air conditioner stops after the set time lapses. FILTER AUTO START ········The air conditioner starts after the set time lapses. CHECK CHECK MODE TEST RUN AUTO OFF ············Timer is not active. <How to operate> 1.
Page 45 (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 46 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 47 OFF: 100 Hr ON : 2500 Hr SW18-4) Not yet used. 2 On indoor controller board For PKH-2FKA only (1) SW1 (Mode selector) 1 2 3 4 5 6 7 8 910 SW1-1) Switch that changes between FAN mode and AUTO mode...
Page 48 (6) SW7 (Model selector) Switch to set the output of phase-controlled indoor fan motor. Address setting is available at any time/ The initial factory setting by is based on each capacity. PKH-2FKA Service Ref. 1 2 3 3. On indoor controller board For PKH-2.5FKA...
Page 49 J1-4) Switch for drain pump Provided : The drain pump works in only COOL operation Not provided: The drain pump works in both COOL and HEAT operation J1-5) Switch to change the temperature to start coil frost prevention Provided : 1°C (For all current models) Not provided: -3°C (For previous special models) J1-6) Switch for set temperature adjustment in HEAT mode...
Page 50: 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 51 3-5 Defrosting in HEAT mode <Defrosting time chart> Defrosting Defrosting starts. stops. Indoor unit Indoor fan 10 degrees (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 52 (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 53 3-7 Service functions (1) Compulsory defrosting 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 8°C or below.
Page 54: 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 55 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. (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 56 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 57 3. SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARD Setting dip switches 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 58 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 Number of bits 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 rotational frequency.
Page 59 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. Open phase Phase L is open. Check the power supply. Contact of protector, such as Check each protector.
Page 60 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 Phenomena due to wrong wiring between indoor and outdoor units Wrong wiring Mode Thermostat...
Page 61 7. OTHER TROUBLES AND CAUSES Vanes do not work. Vane motor is damaged. Vane motor does not work. Vane motor relay is damaged. Limit switch does not work. Connector is poorly connected. Limit switch is damaged. Vane motor is poorly assembled. The size of the cam is wrong.
Page 62 4.3k"~9.6k" Open or short Fan motor (MF) Measure the resistance between the terminals using a tester. (Winding temperature 20:) Relay connector Normal Motor terminal Abnormal White PKH-2FKA PKH-2.5, 3FKA PKH-4FKSA Relay connector Black Red–Black 154.3" 99.5" 62.6" Open or short White–Black...
Page 63: 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 angle 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 64.)
Page 64 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 65 3. 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-SA89TA-E), and a remote ON/OFF switch to the system. Timer adapter is an optional part. Other parts are available 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 between the remote ON-OFF control and the individual remote control...
Page 66 NOTE1 : Install the relay box where you can be serviced it 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 67: Auto Restart Function
Relay box 6. AUTO RESTART FUNCTION By setting the dip swich SW1-10 to ON (PKH-2FKA), J1-10 cut (PKH-2.5/3/4FK(S)A) the air conditioner can be started/stopped by power supply ON/OFF. If the air conditioner is OFF before the power failure, it will not start operation by power restore.
Page 68: Disassembly Procedure
DISASSEMBLY PROCEDURE PKH-3FKA , PKH-3FKA OPERATING PROCEDURE PHOTOS&ILLUSTRATION 1. Removing the lower side of the indoor unit from the instal- Figure 1 lation plate Hanger of indoor unit (1) Remove the 2 screws. Hang the indoor unit hangers to the catches on the instal- Catch of installation plate lation plate.
Page 69 OPERATING PROCEDURE PHOTOS&ILLUSTRATION (9) Remove the screws of the indoor controller board case, Photo 3 and pull out the indoor controller board case. Then the transformer and the capacitor can be serviced. Transformer Capacitor Indoor controller board case Electrical parts box 5.
Page 70 OPERATING PROCEDURE PHOTOS 8. Removing the lineflow fan and the fan motor Photo 7 (1) Remove the left and right side panels. (2) Remove the grilles. (3) Remove the electrical parts box. Screw Lineflow fan (4) Remove the drain pan. (5) Loosen the screw that fixes the lineflow fan to the fan Fan motor motor.
Page 71: Parts List
PARTS LIST STRUCTURAL PARTS PKH-2FKA PKH-2FKA PKH-2FKA PKH-2FKA Q'ty / set Price PKH-2 Wiring Recom- Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q'ty Unit Amount R01 KV5 651 FRONT PANEL R01 47J 651 FRONT PANEL R01 KV5 096 SCREW CAP —...
Page 72 STRUCTURAL PARTS PKH-2.5FKA PKH-3FKA PKH-2.5FKA PKH-3FKA PKH-2.5FKA PKH-3FKA PKH-2.5FKA PKH-3FKA Part number that is circled is not shown in the figure. Q'ty / set Price Wiring Recom- PKH-2.5 PKH-3 Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q'ty Unit Amount...
Page 73 STRUCTURAL PARTS PKH-4FKSA PKH-4FKSA PKH-4FKSA PKH-4FKSA Part number that is circled is not shown in the figure. Q'ty / set Price Wiring Recom- PKH-4 Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q'ty FKSA Unit Amount FKSA FKSA FKSA R01 12G 662...
Page 74 CHECK WARMER COOLER SET TEMP TEMPERATURE TIMER OFF TIMER MODE HOURS AUTO STOP AUTO START FAN SPEED LOW/HIOGH LOW HIGH SWING UP/DOWN DISCHARGE STOP AUTO RETURN CHECK TEST RUN CHECK TEST RUN MITSUBISHI ELECTRIC For PKH-2FKA For PKH-2FKA PKH-2FKA PKH-2FKA...
Page 75 Part number that is circled is not shown in the figure. Q'ty / set Wiring Recom- Remarks PKH-2 Price Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q'ty Unit Amount R01 KV5 106 BEARING SUPPORT R01 KV5 102 BEARING MOUNT R01 566 103 SLEEVE BEARING...
Page 76 AUTO STOP AUTO START LOW HIGH FAN SPEED LOW/HIOGH SWING UP/DOWN STOP DISCHARGE AUTO RETURN CHECK TEST RUN CHECK TEST RUN MITSUBISHI ELECTRIC For PKH-2.5FKA PKH-2.5FKA , PKH- 2.5FKA PKH-3FKA PKH-2.5FKA PKH-3FKA PKH-3FKA PKH-3FKA 15 16 Q'ty / set Price...
Page 77 Q'ty / set Price Wiring Recom- Remarks PKH-2.5 PKH-3 Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q'ty Unit Amount R01 KV5 527 DRAIN HOSE R01 12G 002 AUTO VANE — (BG25H301H02) — (BG25J821H01) GUIDE VANE — (BG25J821H02) GUIDE VANE(WITH HANDLE) R01 12G 223 VANE MOTOR...
Page 78 PKH-4FKSA AUTO START LOW HIGH FAN SPEED LOW/HIOGH SWING UP/DOWN STOP DISCHARGE AUTO RETURN CHECK TEST RUN CHECK TEST RUN MITSUBISHI ELECTRIC For PKH-4FKSA PKH-4FKSA , PKH-4FKSA PKH-4FKSA 15 16 Q'ty / set Price Wiring Recom- PKH-4 Remarks Part No.
Page 79 Q'ty / set Price Wiring Recom- PKH-4 Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q'ty FKSA Unit Amount FKSA FKSA FKSA R01 16G 002 AUTO VANE — (BG25H301H02) — (BG25J821H01) GUIDE VANE — (BG25J821H02) GUIDE VANE(WITH HANDLE) R01 12G 223 VANE MOTOR T7W 556 305...
Page 80: Optional Parts
OPTIONAL PARTS 1. REFRIGERANT PIPES Service Ref. : PKH-2FKA , PKH-2.5FKA , PKH-2.5FKA , PKH-3FKA , PKH-3FKA 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 Service Ref. : PKH-4FKSA , PKH-4FKSA Part No.
Page 81: Names And Functions
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 5-wire cable as shown in the figure below Connect 2-wire cable to indoor unit NOTE:While the program timer is connected to the remote controller, the...
Page 82 DUAL D U A L C E N T R A L CENTRAL O P E R A T I O N 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 83 TERMINAL-BLOCK TERMINAL-BLOCK FOR TRANSMISSION OF POWER SUPPLY Transmission (BR) Tie-wrap POWER SUPPLY Fuse(5A) TRANSFORMER Tie-wrap Wiring has to be changed when a 200,230 or 240V power is used. (2) Connection method of centralized remote controller and power supply board. 1. Connect the centralized remote controller and power supply board with a non-polar, two-wire cable. Power supply board box To adaptor's terminal-block...
Page 84 6. PROGRAM TIMER ADAPTER This adapter is needed when a program timer(PAC-SC32PTA)or a centralized remote controller(PAC-805RC)is used. Part No. PAC-825AD 6-1. Parts included 1 ADAPTER ·························1P 2 3-core cable···························1P 3 3-core cable···························1P Length : 2m (6' 7") Length : 2m (6' 7") 4 4-core cable···························1P 5 5-core cable···························1P Length : 2m (6' 7")
Page 86 HEAD OFFICE : MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI,CHIYODA-KU TOKYO 100-8310, JAPAN © Copyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD. Distributed in Nov. 2001. No.OC132 REVISED EDITION-A 700 New publication, effective Nov. 2001 Issued in Jul. 1997. No.OC132 340 Specifications subject to change without notice...

This manual is also suitable for:

Mr.slim pkh-2.5fka Mr.slim pkh-3fka Mr.slim pkh-4fksa

Mitsubishi Electric Mr.Slim PKH-2FKA Technical & Service Manual

Quick Links

Related Manuals for Mitsubishi Electric Mr.Slim PKH-2FKA

Summary of Contents for Mitsubishi Electric Mr.Slim PKH-2FKA

This manual is also suitable for:

Table of Contents