Table of Contents
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
SERVICE MANUAL
Indoor unit
[Model names]
PKA-RP35GAL
PKA-RP50GAL
PKH-P35GALH
PKH-P50GALH
Indoor unit
Remote controller
[Service Ref.]
PKA-RP35GAL
PKA-RP50GAL
PKH-P35GALH
PKH-P50GALH
CONTENTS
1. REFERENCE MANUAL ·······································2
2. SAFETY PRECAUTION ·······································3
3. PART NAMES AND FUNCTIONS ·······················7
4. SPECIFICATIONS ················································9
Model name
5. NOISE CRITERION CURVES ····························11
indication
6. OUTLINES AND DIMENSIONS ·························12
7. WIRING DIAGRAM ············································13
8. REFRIGERANT SYSTEM DIAGRAM······················14
9. TROUBLE SHOOTING ······································15
10. DISASSEMBLY PROCEDURE ··························30
11. PARTS LIST ·······················································34
April 2005
No.OC330
•
This manual describes only
service data of the indoor
units.
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Table of Contents
Troubleshooting
Related Manuals for Mitsubishi PKA-RP35GAL
Summary of Contents for Mitsubishi PKA-RP35GAL
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS April 2005 No.OC330 SERVICE MANUAL Indoor unit • This manual describes only [Service Ref.] [Model names] service data of the indoor PKA-RP35GAL units. PKA-RP35GAL PKA-RP50GAL PKA-RP50GAL PKH-P35GALH PKH-P35GALH PKH-P50GALH PKH-P50GALH CONTENTS 1. REFERENCE MANUAL ·······································2 2. -
Page 2: Reference Manual
REFERENCE MANUAL 1-1. OUTDOOR UNIT’S SERVICE MANUAL Service Manual No. Service Ref. PUHZ-RP35/50/60/71/100/125/140VHA OC334 PUHZ-RP100/125/140YHA PUHZ-RP71/100/125/140VHA-A OC337 PUHZ-RP200/250YHA OC338 PUHZ-RP200/250YHA-A OC339 PU(H)-P·VGAA.UK OC336 PU(H)-P·YGAA.UK 1-2. TECHNICAL DATA BOOK Manual No. Series (Outdoor unit) PUHZ-RP·VHA(-A) OCS01 PUHZ-RP·YHA(-A) PU(H)-P·VGAA.UK OCS02 PU(H)-P·YGAA.UK... -
Page 3: Safety Precaution
SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. Use liquid refrigerant to seal the system. The old refrigerant and lubricant in the existing piping If gas refrigerant is used to seal the system, the composition contains a large amount of chlorine which may cause the of the refrigerant in the cylinder will change and performance lubricant deterioration of the new unit. - Page 4 [3] Service tools Use the below service tools as exclusive tools for R407C refrigerant. Tool name Specifications Gauge manifold ·Only for R407C. ·Use the existing fitting SPECIFICATIONS. (UNF7/16) ·Use high-tension side pressure of 3.43MPa·G or over. Charge hose ·Only for R407C. ·Use pressure performance of 5.10MPa·G or over.
- Page 5 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.
- Page 6 Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over.
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Page 7: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor Unit Filter Air intake grille Air intake Auto vane Guide vane Air outlet... -
Page 8: Wireless Remote Controller
Wireless remote controller When cover is open. display CHECK TEST RUN CHECK&TEST RUN display indicates that the unit is being checked or test-run. display MODEL SELECT Blinks when model is selected. display Lights up while transmission to the indoor unit is mode using switches. display SET TEMP. -
Page 9: Specifications
SPECIFICATIONS PKA-RP35GAL Service Ref. Cooling Heating Mode Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.07 0.07 Running current 0.33 0.33 0.40 0.40 Starting current External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Fan(drive) x No. Line flow (direct) x 1 Fan motor output 0.030... - Page 10 Service Ref. PKH-P35GALH Mode Cooling Heating Power supply(phase, cycle,voltage) Single phase, 50Hz, 230V Input 0.07 0.07<0.73> 0.33 0.33<3.17> Running current 0.40 0.40<3.17> Starting current Munsell 0.70Y8.59/0.97 External finish Heat exchanger Plate fin coil Fan(drive) x No. Line flow (direct) x 1 Fan motor output 0.030 Airflow(Low-Medium2-Medium1-High)
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Page 11: Noise Criterion Curves
NOISE CRITERION CURVES SPL(dB) LINE NOTCH High PKA-RP35GAL Medium1 PKA-RP50GAL Medium2 PKH-P35GALH PKH-P50GALH NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE TERESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz UNIT WALL MICROPHONE... -
Page 12: Outlines And Dimensions
OUTLINES AND DIMENSIONS Unit : mm INDOOR UNIT PKH-P35GALH PKH-P50GALH PKA-RP35GAL PKA-RP50GAL... -
Page 13: Wiring Diagram
WIRING DIAGRAM PKH-P35GALH PKH-P50GALH PKA-RP35GAL PKA-RP50GAL CNDK CN2S (RED) (WHT) w1 (Fig.1) POWER DC13.1V SUPPLY ~(1PHASE) 230V 50Hz GRN/YLW OUTDOOR UNIT POWER POWER OUTDOOR VANE 1 3 5 CNDK UNIT CN6V ( WHT ) INDOOR/OUTDOOR (RED) (ORN) POWER ( GRN ) -
Page 14: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PKA-RP35GAL PKH-P35GALH PKA-RP50GAL PKH-P50GALH Unit : mm Strainer Heat exchanger Refrigerant GAS pipe connection (Flare) Condenser/evaporator temperature thermistor (TH5) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Pipe temperature thermistor/liquid Room temperature... -
Page 15: Troubleshooting
TROUBLESHOOTING 9-1. TROUBLESHOOTING <Error code display by self-diagnosis and actions to be taken for service (summary)> Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit. Actions to be taken for service and the inferior phenomenon reoccurrence at field are summarized in the table below. Check the contents below before investigating details. - Page 16 9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER <In case of trouble during operation> When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1.
- Page 17 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp flash pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
- Page 18 • On wireless remote controller 2The continuous buzzer sounds from receiving section of indoor unit. 3Blink of operation lamp • On wired remote controller 1Check code displayed in the LCD. • If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause. Symptom Cause Wired remote controller...
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Page 19: Self-Diagnosis Action Table
Note: Refer to the manual of outdoor unit for the details of display 9-3. SELF-DIAGNOSIS ACTION TABLE such as F, U, and other E. Error Code Meaning of error code and detection method Countermeasure Cause Abnormality of room temperature 1 Defective thermistor 1–3 Check resistance value of thermistor. - Page 20 Error Code Meaning of error code and detection method Countermeasure Cause Freezing/overheating protection is (Cooling or drying mode) (Cooling or drying mode) working 1 Clogged filter (reduced airflow) 1 Check clogs of the filter. 1 Freezing protection (Cooling mode) 2 Short cycle of air path 2 Remove shields.
- Page 21 Error Code Meaning of error code and detection method Countermeasure Cause 1 Defective thermistor Abnormality of pipe temperature ther- 1–3 Check resistance value of thermistor. mistor / Condenser-Evaporator (TH5) For characteristics, refer to (P1) above. characteristics 2 Check contact failure of connector (CN29) 1 The unit is in three-minute resume pro- 2 Contact failure of connector on the indoor controller board.
- Page 22 Error Code Meaning of error code and detection method Countermeasure Cause 1 Contact failure, short circuit or, Indoor/outdoor unit communication Check LED display on the outdoor control error (Signal receiving error) circuit board. (Connect A-control service tool, mis-wiring (converse wiring) of 1 Abnormal if indoor controller board PAC-SK52ST.) indoor/outdoor unit connecting...
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Page 23: Troubleshooting By Inferior Phenomena
9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (1)LED2 on indoor controller board • When LED1 on indoor controller board is also off. 1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power is off. - Page 24 Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (2)LED2 on indoor controller board • When LED1 on indoor controller board is also blinking. Check indoor/outdoor unit connecting wire Connection failure of indoor/outdoor unit connecting for connection failure.
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Page 25: Emergency Operation
9-5. EMERGENCY OPERATION 9-5-1. When wireless remote controller troubles or its battery is exhausted 1. Emergency operation is available in such a case using emergency operation switch equipped next to the receiver of indoor unit. 2. To start operation • Cooling Operation·······Press (Cooling) switch. - Page 26 9-6. HOW TO CHECK THE PARTS PKH-P35GALH, PKH-P50GALH PKA-RP35GAL, PKA-RP50GAL Parts name Check points Room temperature Disconnect the connector then measure the resistance using a tester. thermistor (TH1) (Surrounding temperature 10:~30:) Pipe temperature thermistor (TH2) Normal Abnormal Condenser/evaporator (Refer to <Thermistor Characteristic graph>...
- Page 27 9-7. TEST POINT DIAGRAM 9-7-1. Indoor controller board PKA-RP35GAL PKH-P35GALH PKA-RP50GAL PKH-P50GALH CN2D LED1 LED2 LED3 Connect to the indoor Power supply (I.B) Power supply (R.B) Transmission CN3C power board (CN2S) (Indoor/outdoor) Transmission (12.5~13.7V DC) (Indoor/outdoor) CN22 (0~24V DC) Connect to the terminal...
- Page 28 9-7-2. Indoor power board PKA-RP35GAL PKH-P35GALH PKA-RP50GAL PKH-P50GALH CN2S Connect to the indoor controller board (CN2D) Between 1 1 to 3 3 12.6-13.7V DC (Pin1 1 (+)) CNSK Connect to the indoor controller board (CNDK) 1 1 to 3 3 220-240V AC...
- Page 29 Jumper wire Setting by the dip switch and jumper wire Functions Remarks For service board Model settings Models Service board PKA-RP35GAL Capacity PKH-P35GALH settings PKA-RP50GAL PKH-P50GALH <Settings at time of factory shipment> Wireless remote controller: 0 Control PCB setting Wireless remote...
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Page 30: Disassembly Procedure
DISASSEMBLY PROCEDURE PKH-P35GALH, PKH-P50GALH PKA-RP35GAL, PKA-RP50GAL OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Figure 1) Hook 1. REMOVE 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 section from the square hole. - Page 31 OPERATION PROCEDURE PHOTOS & ILLUSTRATION 4. REMOVING THE POWER BOARD (Photo 4) (1) Remove the front panel.(see the photo 1) (2) Remove the electrical parts box(2screws).(see the photo 2) Power board (3) 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.(see the photo 3)
- Page 32 OPERATION PROCEDURE PHOTOS & ILLUSTRATION 9. REMOVING THE FAN MOTOR. (Photo 9) (1) Remove the terminal block cover. Motor cover (2) Disconnect the connector <yellow> of the wireless remote controller board. (3) Remove the front panel.(see the photo 1) (4) Remove the electrical parts box.(see the photo 8) (5) Remove the nozzle assemble.(see the photo 7) (6) Remove the fan motor leg fixing 3screws.
- Page 33 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. (3) Remove the front panel.(see the photo 1) (4) Remove the 2screws and signal receiving p.c.
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Page 34: Parts List
PARTS LIST PKH-P35GALH, PKA-RP35GAL ELECTRICAL PARTS PKH-P50GALH, PKA-RP50GAL Wiring Recom- PKH- PKA- Price Remarks Specifications Parts No. Parts Name Diagram mended P35 / P50 RP35 / RP50 (Drawing No.) Unit Amount Symbol Q'ty GALH R01 E48 480 HEAT EXCHANGER T7W E56 480... - Page 35 From the preceding page. Part numbers that is circled is not shown in the figure. Wiring Recom- PKH- PKA- Price Remarks Specifications Diagram mended Parts No. Parts Name P35 / P50 RP35 / RP50 (Drawing No.) Unit Amount Symbol Q'ty GALH TERMINAL COVER (BG02V195H10)
- Page 36 WIRELESS REMOTE CONTROLLER DOOR R01 E00 075 WIRELESS REMOTE CONTROLLER HOLDER HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. New publication, effective Apr. 2005. Distributed in Apr. 2005 No.OC330 PDF 9 Specifications subject to change without notice.
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