Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual
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Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual

Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual

Split-type,heat pump air conditioners
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SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Series PKH
Wall Mounted
Indoor unit
[Model names]
PKH-1.6FKA
PKH-2FKA
PKH-2.5FKA
PKH-3FKA
PKH-4FKSA
INDOOR UNIT
REMOTE CONTROLLER
[Service Ref.]
PKH-1.6FKA-E
PKH-2FKA-E
PKH-2.5FKA-E
PKH-3FKA-E
PKH-4FKSA-E
FILTER
CHECK MODE
TEST RUN
1999
This manual does not cover the
following outdoor units. When ser-
vicing them, please refer to the
service manual No.OC150 and
this manual in a set.
[Service Ref.]
PUH-1.6VKA
.UK
3
PUH-2VKA
.UK
2
PUH-2.5VKA
.UK
2
PUH-3VKA
.UK
2
PUH-3YKA
.UK
2
PUH-4YKSA
.UK
2
CONTENTS
1. PART NAMES AND FUNCTIONS ········2
2. SPECIFICATIONS·································4
3. DATA ·····················································9
4. OUTLINES AND DIMENSIONS··········23
5. WIRING DIAGRAM·····························27
7. OPERATION FLOW-CHART ··············30
9. TROUBLESHOOTING ························56
10. SYSTEM CONTROL ···························65
11. DISASSEMBLY PROCEDURE ···········70
12. PARTS LIST········································73
13. OPTIONAL PARTS ·····························79
The Slim Line.
From Mitsubishi Electric.
No.OC190

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Summary of Contents for Mitsubishi Electric Mr.SLIM PKH-1.6FKA

  • Page 1: Table Of Contents

    7. OPERATION FLOW-CHART ··············30 INDOOR UNIT 8. MICROPROCESSOR CONTROL·······34 9. TROUBLESHOOTING ························56 10. SYSTEM CONTROL ···························65 11. DISASSEMBLY PROCEDURE ···········70 12. PARTS LIST········································73 FILTER CHECK MODE 13. OPTIONAL PARTS ·····························79 TEST RUN The Slim Line. From Mitsubishi Electric. REMOTE CONTROLLER...

  • Page 2: Part Names And Functions

    PART NAMES AND FUNCTIONS Indoor Unit Air intake Filter Air intake grill (Removes dust and dirt from the intake air.) room air is suctioned in here. Guide vane Swing louvers Disperses airflow up and Air flow can be changed to horizontally down as well as adjusts the by moving the Guide vane to the left or angle of air flow direction.
  • Page 3 Display In this display example on CENTRALLY l 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 4: Specifications

    SPECIFICATIONS Service Ref. PKH-1.6FKA-E Item Function Cooling Heating 4,500 4,650 Capacity Btu/h 15,350 15,900 Total input 1.51 1.48 Service Ref. PKH-1.6FKA-E Power supply(phase,cycle,voltage) Single, 50Hz, 220-240V 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) Heat exchanger Plate fin coil Fan(drive)
  • Page 5 Service Ref. PKH-2FKA-E 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-E Power supply(phase,cycle,voltage) Single, 50Hz, 220-240V 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) Heat exchanger Plate fin coil Fan(drive)
  • Page 6 Service Ref. PKH-2.5FKA-E 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-E Power supply(phase,cycle,voltage) Single, 50Hz, 220-240V 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 Plate fin coil Fan(drive)
  • Page 7 Service Ref. PKH-3FKA-E 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-E Power supply(phase,cycle,voltage) Single, 50Hz, 220-240V 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 Plate fin coil Fan(drive)
  • Page 8 Service Ref. PKH-4FKSA-E 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-E Power supply(phase,cycle,voltage) Single, 50Hz, 220-240V 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 Plate fin coil Fan(drive)

  • Page 9: Data

    DATA 1. PERFORMANCE DATA 1) COOLING CAPACITY<1> PKH-1.6FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 4540 3042 0.67 1.21 4415 2958 0.67 1.26 4253 2850 0.67 1.36 4834 2659...
  • Page 10 COOLING CAPACITY<2> PKH-1.6FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 4081 2734 0.67 1.46 3899 2612 0.67 1.55 3706 2483 0.67 1.65 4355 2395 0.55 1.49 4167 2292 0.55...
  • Page 11 COOLING CAPACITY<3> PKH-2FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 5549 3385 0.61 1.82 5397 3292 0.61 1.90 5198 3171 0.61 2.04 5908 2895 0.49 1.86 5752 2819 0.49...
  • Page 12 COOLING CAPACITY<4> PKH-2FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 4988 3043 0.61 2.19 4765 2907 0.61 2.34 4530 2763 0.61 2.49 5323 2608 0.49 2.24 5093 2495 0.49...
  • Page 13 COOLING CAPACITY<5> PKH-2.5FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 6557 4787 0.73 2.05 6378 4656 0.73 2.14 6144 4485 0.73 2.30 6982 4259 0.61 2.09 6798 4147 0.61...
  • Page 14 COOLING CAPACITY<6> PKH-2.5FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 5895 4303 0.73 2.47 5631 4111 0.73 2.64 5353 3908 0.73 2.80 6291 3837 0.61 2.53 6019 3671 0.61...
  • Page 15 COOLING CAPACITY<7> PKH-3FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 7970 5101 0.64 2.60 7752 4961 0.64 2.72 7467 4779 0.64 2.92 8486 4413 0.52 2.66 8262 4296 0.52...
  • Page 16 COOLING CAPACITY<8> PKH-3FKA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 7164 4585 0.64 3.13 6844 4380 0.64 3.35 6506 4164 0.64 3.56 7646 3976 0.52 3.21 7315 3804 0.52...
  • Page 17 COOLING CAPACITY<9> PKH-4FKSA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 9584 6709 0.70 2.65 9322 6525 0.70 2.77 8979 6285 0.70 2.98 10204 5919 0.58 2.71 9936 5763 0.58...
  • Page 18 COOLING CAPACITY<10> PKH-4FKSA-E Outdoor intake air °C DB Indoor Indoor Intake air Intake air °C DB °C WB SHC(W) P.C. SHC(W) P.C. SHC(W) P.C. 8615 6031 0.70 3.19 8230 5761 0.70 3.41 7824 5477 0.70 3.62 9194 5333 0.58 3.27 8797 5102 0.58...
  • Page 19 Cooling capacity correction factors Refrigerant piping length(one way) Service Ref. 1.00 0.093 0.984 0.978 0.969 0.961 0.956 0.948 PKH-1.6FKA-E 1.00 0.992 0.983 0.978 0.966 0.959 0.950 0.945 PKH-2FKA-E 1.00 0.989 0.980 0.970 0.960 0.950 0.940 0.930 0.920 0.910 PKH-2.5FKA-E 1.00 0.981 0.968 0.952...
  • Page 20 2. ELECTRICAL DATA Indoor unit · · · · · 220V 50Hz 1phase Outdoor unit · · · 220V 50Hz 1phase / 380V 50Hz 3phase Indoor unit PKH-1.6FKA-E PKH-2FKA-E PKH-2.5FKA-E PKH-3FKA-E PKH-4FKSA-E Service Ref. Outdoor unit PUH-1.6VKA PUH-2VKA PUH-2.5VKA .UK PUH-3VKA PUH-3YKA PUH-4YKSA Mode...
  • Page 21 3. STANDARD OPERATION DATA Service Ref. PKH-1.6FKA-E PKH-2FKA-E PKH-2.5FKA-E PKH-3FKA-E PKH-4FKSA-E Mode Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Capacity 4,500 4,650 5,500 6,250 6,500 7,200 7,900 9,100 7,900 9,100 9,500 10,700 Input 1.51 1.48 2.27 2.29 2.56...
  • Page 22 5. NOISE CRITERION CURVES PKH-1.6FKA PKH-2.5FKA SPL(db LINE SPL(db LINE NOTCH NOTCH PKH-2FKA PKH-3FKA NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROTIMATE APPROTIMATE TERESHOLD OF TERESHOLD OF REARING FOR REARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE NOISE 1000 2000 4000...

  • Page 23: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : mm 1. INDOOR UNIT PKH-1.6FKA-E PKH-2FKA-E...
  • Page 24 PKH-2.5FKA-E Unit : mm PKH-3FKA-E...
  • Page 25 Unit : mm PKH-4FKSA-E...
  • Page 26 Unit : mm 2. REMOTE CONTROLLER FILTER FILTER CHECK MODE CHECK MODE TEST RUN TEST RUN REMOTE CONTROLLER PAR-JH241KA Rear side wiring arrangement opening. CAUTION SW18 SW17...

  • Page 27: Wiring Diagram

    WIRING DIAGRAM PKH-1.6FKA-E / PKH-2FKA-E POWER SUPPLY GRN/YLW ~(1 PHASE) AC220-240V 50Hz GRN/YLW AC220V 60Hz 11.1VAC 240V 230V 220V 14.2VAC MODELS 1.6FKA 2FKA 1 2 3 1 2 3 CN4T FAN1 TRANSMISSION WIRES POWER TRANS TRANS DC12V LED2 5V CN6V POWER VANE LED1 12V...
  • Page 28 PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E 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 POWER TO OUTDOOR UNIT...

  • Page 29: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Unit : mm PKH-1.6FKA-E / PUH-1.6VKA PKH-2FKA-E / PUH-2VKA PKH-2.5FKA-E / PUH-2.5VKA PKH-3FKA-E / PUH-3VKA .UK, 3YKA High pressure High pressure control switch protect switch Oil separator Refrigerant pipe Outdoor unit Service (option) Indoor unit 4-way valve Outdoor heat exchanger port 15.88mm(...

  • Page 30: 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 31 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 32 HEATING OPERATION Heat operation PKH-FK Initial Type Heating area HEATING 3-minute Defrost release Vane setting notch Auxiliary heater Vane initial setting Defrost 30 min. elapse Indoor coil Defrosting Outdoor unit trouble thermstor is 60°C or higher Four-way valve ON FAN speed Low notti Hor adjust in process...
  • Page 33 DRY OPERATION operation Four-way valve / OFF Initial dry operation Vane Vane initial setting setting notch w 12 Room temperature is 18°C or lower During compressor ON 3-minute 3-minute compressor time delay operation Compressor & Compressor & thermostat thermostat ON 10-minute Compressor ON compressor...

  • Page 34: Microprocessor Control

    MICROPROCESSOR CONTROL 1. OUTLINE OF MICROPROCESSOR CON- REMOTE CONTROLLER OUTPUT to remote controller INPUT to remote controller Processes and transmits OFF-ON switching. orders. Remote controller COOL/DRY-AUTO-HEAT selector switching. LCD indicator Thermostat setting. TIMER mode selector-switching and Timer setting. HIGH-LOW fan speed switching. FILTER AUTO Vane selector (AIR DISCHARGE) CHECK MODE...
  • Page 35 2. INDOOR UNIT CONTROL 2-1 COOL operation <How to operate> 1 Press POWER ON/OFF button. 2 Press the a button to display “ f ”. FILTER 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 30°C.
  • Page 36 (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. When the outdoor unit abnormality detection is released and the fan speed returns to the set speed, the quiet cycle control will work.
  • Page 37 (3) Auto vane control Auto vane position is set to 10 degrees airflow at the start-up of COOL operation. It can then be changed by the remote controller. (a) Stop mode (fixed operation) ( i ) At start-up of COOL operation, the auto vane is set to 10 degrees airflow direction. ( ii ) Discharge direction can be changed with button.
  • Page 38 <Auto vane drive> (PKH-1.6FKA-E / PKH-2FKA-E) (a) The auto vane is driven by a 2.5 rpm motor. 10° 30° 60° 70° (b) Vane motor drive time Airflow direction change 50Hz Downward C Horizontal 4 1 Rise 2.1 Horizontal Downward A 1 2 0.65 Downward A Horizontal B 2 3...
  • Page 39 (5) Drain pump control (Option : Only PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E) The drain pump works in COOL or DRY operation. When operation stops or changes to HEAT mode, the drain pump con- tinues to operate for 3 more minutes. The drain pump does not work in check mode. <Drain sensor>...
  • 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 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 41 2-3 HEAT operation <How to operate> 1 Press POWER ON/OFF button. 2 Press the a button to display “ g ”. 3 Press the i TEMP. button to set the desired temperature. FILTER NOTE: The set temperature changes 1°C when the CHECK MODE button is press one time Heating 17 to 28°C.
  • Page 42 (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 SW1-7 and SW1-8,(PKH- 2.5/3/4 for J1-7, J1-8) If the indoor coil temperature becomes more than 5 degrees below the room temperature dur- ing the thermostat OFF, the indoor fan will stop.
  • Page 43 (4) Detecting abnormalities in the outdoor unit When the outdoor unit is determined to be abnormal by the following causes, the compressor will stop and the check code “ P8 ” will appear on the remote controller display. 1 During compressor ON after hot adjustment [1] If the difference between the indoor coil temperature and room temperature is in the RANGE B, the indoor fan will w1 (See the next page.) stop.
  • Page 44 2-4 AUTO operation (Automatic COOL/HEAT change over operation) <How to operate> 1 Press POWER ON/OFF button. 2 Press the a button to display “ h ”. 3 Press the i TEMP. button to set the desired temperature. FILTER CHECK MODE TEST RUN NOTE: The set temperature changes 1°C when the button is press one time Auto 19 to 28°C.
  • Page 45 2-5 Auto vane control <How to operate> To change the airflow direction, press button. FILTER CHECK MODE TEST RUN 10˚ Available in COOL operation with fan speed on HIGH or 30˚ in HEAT operation. Unavailable in DRY operation. If fan speed changes from LOW to HIGH during 30° downward airflow in COOL mode, the direction auto- 60˚...
  • Page 46 2-6 TIMER operation <Timer function> AUTO STOP ·········The air conditioner stops after the set time lapses. AUTO START ········The air conditioner starts after the set time lapses. FILTER CHECK MODE AUTO OFF ············Timer is not active. TEST RUN <How to operate> 1.
  • Page 47 (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 48 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 49 2-10 Dip switch and jumper connector functions Each figure shows the initial factory setting. [1] On remote controller board (1) SW17(Address selector) 8 7 6 5 4 3 2 1 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 50 (2) SW2 (Address selector) 1 2 3 4 5 6 Used in setting the unit-address for group control. For further information, refer to page 68. (3) SW3 (Emergency operation switch) Normal operation For emergency cooling For emergency heating (4) SW5 (Model selector) SW5-1) Power supply ON :230V/240V OFF:220V...
  • Page 51 J1-6) Switch for set temperature adjustment in HEAT mode During HEAT operation, warm air collects near the ceiling. When the indoor unit is installed near the ceiling, the temperature read by room temperature thermistor differs from the actual living-space temperature by about 4 degrees.
  • Page 52 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 53 3-5 Defrosting in HEAT mode <Defrosting time chart> Defrosting Defrosting starts. stops. Indoor unit Indoor fan 10 degrees discharge direction. (Remote controller still displays set direction.) Auto vane CLOSE CLOSE Outdoor unit 4-way valve Bypass valve Outdoor fan Compressor (1) Start conditions A.
  • Page 54 (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 55 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 56: 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 dose not disap- 2) Timer adapter is connected to the 2) Make sure the timer adapter is used correctly.
  • Page 57 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 alternately at one-second intervals.
  • Page 58 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 59 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 60 3-1 Outdoor coil temperature To obtain data on the outdoor coil temperature, add the number of bits of lighting LED, and see the graph below to find the temperature. (Short 38 bits) (Short 238 bits) (Short 238 bits) (Open 219 bits) (Open 8 bits) (Open 8 bits) Number of bits...
  • Page 61 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 62 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 63 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 64 8.MR. SLIM/LOSSNAY INTERLOCK OPERATION <Symptoms that are not malfunctions> If any of the following symptoms occur, they are not malfunctions. Symptom Cause LOSSNAY control switch can not work during interlock opera- tion. LOSSNAY control switch does not work. LOSSNAY control switch is effective only while Mr. SLIM is not operating.

  • Page 65: 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 66.)
  • Page 66 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 67 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 68 3-3 Switch function of remote ON-OFF switch (Switches between remote ON-OFF and individual control) (Remote ON-OFF control) (Individual control) All units start together. Each unit can be controlled by each (Start) Individual control is not available. (Switches between remote controller. All units stop together.
  • Page 69 Indoor controller board 5. MULTIPLE REMOTE CONTROL DISPLAY You can control several units with a multiple remote control display,by wiring an optional multiple display adapter (PAC-SA88HA-E) with relays and lamps on the market. 5-1 How to wire (1) Connect the multiple display adapter to the connector CN51 on the indoor controller board.

  • Page 70: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKH-3FKA-E 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. Hang the indoor unit hangers to the catches on the instal- lation plate. Hanger of indoor unit Catch of installation plate Metal fixture...
  • Page 71 OPERATING PROCEDURE PHOTOS&ILLUSTRATION (9) Remove the screws of the indoor controller board case, Photo 3 and pull out the indoor controller board case. Relay Then the transformer and the capacitor and relay can be serviced. Transformer Capacitor Indoor controller board case Electrical parts box 5.
  • Page 72 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 grills. (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 73: Parts List

    PARTS LIST STRUCTURAL PARTS PKH-1.6FKA -E PKH-2FKA -E ty/set Price Wiring Recom- Remarks PKH-1.6/2 Part No. Part Name Diagram mended Specification ( Drawing No. ) Unit Amount Symbol FKA-E FRONT PANEL R01 KV5 651 AIR FILTER R01 47J 500 SCREW CAP R01 KV5 096 SERVICE PANEL T7W 580 058...
  • Page 74 ELECTRICAL PARTS PKH-1.6FKA -E PKH-2FKA -E FILTER CHECK MODE TEST RUN 14 15 16 17 ty/set Price Wiring Recom- Remarks Specification PKH-1.6 PKH-2 Part No. Part Name Diagram mended ( Drawing No. ) Unit Amount Symbol FKA-E FKA-E PK4V30KA T7W 570 762 FAN MOTOR LINEFLOW FAN R01 KV5 114...
  • Page 75 Part number that is circled is not shown in the figure. ty/set Price Wiring Recom- Remarks Part No. Part Name Specification PKH-1.6 PKH-2 Diagram mended ( Drawing No. ) Unit Amount Symbol FKA-E FKA-E TERMINAL BLOCK 2P(1/2) T7W 512 716 TERMINAL BLOCK 3P(1/2/3) T7W 517 716...
  • Page 76 ELECTRICAL PARTS PKH-2.5FKA -E PKH-3FKA -E PKH-4FKSA -E 37·38 FILTER CHECK MODE TEST RUN 23 24 ty/set Price Wiring Recom- Remarks PKH-2.5 PKH-3 PKH-4 Part No. Part Name Specification Diagram mended ( Drawing No. ) Unit Amount Symbol FKA-E FKA-E FKSA-E FAN MOTOR R01 12G 220 FAN MOTOR...
  • Page 77 ty/set Price Wiring Recom- Remarks Part Name PKH-2.5 PKH-3 PKH-4 Part No. Specification Diagram mended ( Drawing No. ) Unit Amount Symbol FKA-E FKA-E FKSA-E BEARING MOUNT R01 Z61 102 BEARING MOUNT R01 KV5 102 ( BG02L462H02 ) BEARING BAND —...
  • Page 78 STRUCTURAL PARTS PKH-2.5FKA -E PKH-3FKA -E PKH-4FKSA -E Part number that are circled are not shown in the figure. ty/set Price Remarks Wiring Recom- Part No. Part Name Specification PKH-2.5 PKH-3 PKH-4 Diagram mended ( Drawing No. ) Unit Amount Symbol FKA-E FKA-E...

  • Page 79: Optional Parts

    OPTIONAL PARTS 1. REFRIGERANT PIPES Service Ref. : PKH-1.6FKA-E/PKH-2FKA-E/PKH-2.5FKA-E/PKH-3FKA-E Part No PAC-05FFS-E PAC-07FFS-E PAC-10FFS-E PAC-15FFS-E Pipe length Liquid: { 9.52 Gas: { 15.88 Pipe size O.D. Connection method Indoor unit:Flared Outdoor unit:Flared Service Ref. : PKH-4FKSA-E Part No PAC-SC51PI-E PAC-SC52PI-E PAC-SC53PI-E PAC-SC54PI-E Pipe length...
  • Page 80 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 24hour 2-wire cable To indoor unit...
  • Page 81 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 82 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 83 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 84 (Only for PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E). Part No. PAC-SE89DM-E HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO cCopyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD New publication, effective Sep. 1999. Issued in Sep. 1999. NO.OC190 541 Specifications subject to change without notice...

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