Mitsubishi Electric Mr.Slim PKA-RP50FAL2 Service Manual
Wall mounted pka series/pkh series
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Also See for Mr.Slim PKA-RP50FAL2:
- Technical data manual (126 pages) ,
- Technical data book (52 pages)
Table of Contents
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
SERVICE MANUAL
Indoor unit
[Model names]
[Service Ref.]
PKA-RP50FAL2
PKA-RP50FAL2
PKA-RP60FAL
PKA-RP60FAL
PKA-RP71FAL
PKA-RP71FAL
PKA-RP100FAL
PKA-RP100FAL
PKH-P60FALH
PKH-P71FALH
PKH-P100FALH
Indoor unit
Remote controller
PKA-RP50FAL2#1
PKA-RP60FAL#1
PKA-RP71FAL#1
PKA-RP100FAL#1
PKH-P60FALH
PKH-P71FALH
PKH-P100FALH
CONTENTS
1. TECHNICAL CHANGES ...................................... 2
2. REFERENCE MANUAL ....................................... 2
3. SAFETY PRECAUTION ....................................... 3
4. PART NAMES AND FUNCTIONS ........................ 7
5. SPECIFICATIONS ................................................ 8
Model name
6. NOISE CRITERION CURVES ............................ 10
indication
7. OUTLINES AND DIMENSIONS .......................... 11
8. WIRING DIAGRAM ............................................. 13
9. REFRIGERANT SYSTEM DIAGRAM ......................... 14
10. TROUBLE SHOOTING ....................................... 15
11. SPECIAL FUNCTION ......................................... 30
12. DISASSEMBLY PROCEDURE ........................... 33
13. PARTS LIST ........................................................ 36
14. RoHS PARTS LIST .............................................42
May 2008
No.OC331
REVISED EDITION-B
Revision:
• PKA-RP50~100FAL(2)#1
are added in REVISED
EDITION-B.
• Some descriptions have
been modified.
• Please void OC331
REVISED EDITION-A.
Note:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
• For servicing of RoHS com-
pliant products, refer to the
RoHS Parts List.
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Table of Contents
Troubleshooting
Related Manuals for Mitsubishi Electric Mr.Slim PKA-RP50FAL2
Summary of Contents for Mitsubishi Electric Mr.Slim PKA-RP50FAL2
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS May 2008 No.OC331 REVISED EDITION-B SERVICE MANUAL Indoor unit Revision: [Model names] [Service Ref.] • PKA-RP50~100FAL(2)#1 are added in REVISED PKA-RP50FAL2 PKA-RP50FAL2#1 PKA-RP50FAL2 EDITION-B. PKA-RP60FAL PKA-RP60FAL#1 • Some descriptions have PKA-RP60FAL been modified. PKA-RP71FAL PKA-RP71FAL#1 PKA-RP71FAL •... -
Page 2: Technical Changes
TECHNICAL CHANGES PKA-RP50FAL2 PKA-RP50FAL2#1 PKA-RP60FAL PKA-RP60FAL#1 PKA-RP71FAL PKA-RP71FAL#1 PKA-RP100FAL PKA-RP100FAL#1 INDOOR CONTROLLER BOARD(I.B.) has been changed. REFERENCE MANUAL 2-1. OUTDOOR UNIT’S SERVICE MANUAL Service Ref. Service Manual No. PUHZ-RP35/50/60/71/100/125/140VHA OC334 PUHZ-RP100/125/140YHA PUHZ-RP71/100/125/140VHA OC337 PUHZ-RP200/250YHA OC338 (1)(2) PUHZ-RP200/250YHA OC339 PU(H)-P • VGAA.UK OC336 PU(H)-P •... -
Page 3: Safety Precaution
SAFETY PRECAUTION 3-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 3-2. 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... - Page 4 [1] Cautions for service ·After recovering the all refrigerant in the unit, proceed to working. ·Do not release refrigerant in the air. ·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. [2] Refrigerant recharging (1) Refrigerant recharging process 1Direct charging from the cylinder.
- 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. Tool name 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 Air intake Filter Air intake grille (Removes dust and dirt from the intake air.) Room air is suctioned in here. Indicator lamp section Guide vane Air flow can be changed to horizontally by moving the Guide vane to the left or Swing louvers right. -
Page 8: Specifications
SPECIFICATIONS PKA-RP50FAL2,PKA-RP50FAL2#1 / PKA-RP60FAL,PKA-RP60FAL#1 Service Ref. Heating Cooling Mode Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V 0.09 0.09 Input 0.43 0.43 Running current 0.80 0.80 Starting current External finish Munsell 3.4Y 7.7/0.8 Heat exchanger Plate fin coil Fan(drive) x No. - Page 9 Service Ref. PKH-P60FALH Mode Cooling Heating Power supply(phase, cycle,voltage) Single phase, 50Hz, 230V Input 0.09 0.09<1.93> Running current 0.43 0.43<8.39> Starting current 0.80 0.80<8.39> External finish Munsell 3.4Y 7.7/0.8 Plate fin coil Heat exchanger Line flow (direct) x 2 Fan(drive) x No. 0.040 Fan motor output 15-20 (530-706)
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Page 10: Noise Criterion Curves
NOISE CRITERION CURVES PKA-RP50FAL2 PKA-RP50FAL2#1 NOTCH SPL(dB) LINE PKA-RP100FAL NOTCH SPL(dB) LINE High PKA-RP60/71FAL High PKA-RP100FAL#1 PKA-RP60/71FAL#1 PKH-P100FALH PKH-P60/71FALH NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR NC-20 HEARING FOR... -
Page 11: Outlines And Dimensions
OUTLINES AND DIMENSIONS PKA-RP50FAL2 PKA-RP50FAL2#1 Unit : mm PKH-P60FALH PKA-RP60FAL PKA-RP60FAL#1 PKH-P71FALH PKA-RP71FAL PKA-RP71FAL#1 Display section Emergency switch(Heat) Receiving section Emergency switch(Cool) Defrosting Initial heating lamp Power lamp Front Right side 1400 Left side Knockout hole for right piping 1090 Air intake Refrigerant pipe. - Page 12 PKH-P100FALH PKA-RP100FAL PKA-RP100FAL#1 Unit : mm Display section Emergency switch(Heat) Emergency switch(Cool) Receiving section Defrosting Initial heating lamp Power lamp Front Knockout hole for right piping Right side 1680 Left side 1370 Air intake Knockout hole for left piping Terminal block for indoor/outdoor connecting line Liquid pipe Terminal block for heater (PKH only) Gas pipe...
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Page 13: Wiring Diagram
WIRING DIAGRAM PKA-RP50FAL2 PKA-RP60FAL PKA-RP71FAL PKA-RP100FAL PKA-RP50FAL2#1 PKA-RP60FAL#1 PKA-RP71FAL#1 PKA-RP100FAL#1 PKH-P60FALH PKH-P71FALH PKH-P100FALH SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR POWER BOARD CAPACITOR(FAN MOTOR) WIRELESS REMOTE CONTROLLER BOARD INDOOR CONTROLLER BOARD FAN MOTOR RECEIVING UNIT FUSE FUSE(T6.3AL250V) BUZZER VANE MOTOR... -
Page 14: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PKA-RP50FAL2 PKA-RP50FAL2#1 PKA-RP60FAL PKA-RP60FAL#1 PKH-P60FALH PKA-RP71FAL PKA-RP71FAL#1 PKH-P71FALH PKA-RP100FAL PKA-RP100FAL#1 PKH-P100FALH 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... -
Page 15: Troubleshooting
TROUBLESHOOTING 10-1. 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 trouble reoccurrence at field are summarized in the table below. Check the contents below before investigating details. - Page 16 10-2. 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 The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp • On wired remote controller Check code displayed in the LCD. • If the unit cannot be operated properly after test run, refer to the following table to find 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 10-3. SELF-DIAGNOSIS ACTION TABLE such as F, U, and other E. Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor 1–3 Check resistance value of thermistor. Room temperature thermistor (TH1) 1 The unit is in 3-minute resume characteristics... - Page 20 Abnormal point and detection method Countermeasure Error Code Cause Freezing/overheating protection is work- (Cooling or drying mode) (Cooling or drying mode) 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 Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor 1–3 Check resistance value of thermistor. Pipe temperature thermistor / For characteristics, refer to (P1) above. Condenser-Evaporator (TH5) characteristics 2 Check contact failure of connector (CN29) 1 The unit is in 3-minute resume protec- 2 Contact failure of connector on the indoor controller board.
- Page 22 Abnornal point and detection method Countermeasure Error Code 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 miswiring (converse wiring) of 1 Abnormal if indoor controller board tool, PAC-SK52ST.) indoor/outdoor unit connecting cannot receive any signal normally for 6...
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Page 23: Troubleshooting By Inferior Phenomena
10-4. 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
10-5. EMERGENCY OPERATION 10-5-1. 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 10-6. HOW TO CHECK THE PARTS PKH-P60FALH PKH-P71FALH PKH-P100FALH PKA-RP50FAL2 PKA-RP60FAL PKA-RP71FA PKA-RP100FAL PKA-RP50FAL2#1 PKA-RP60FAL#1 PKA-RP71FAL#1 PKA-RP100FAL#1 Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester. thermistor (TH1) (Surrounding temperature 10 ~30 )
- Page 27 10-7. TEST POINT DIAGRAM 10-7-1. Indoor controller board PKA-RP50FAL2 PKA-RP50FAL2#1 PKA-RP60FAL PKA-RP60FAL#1 PKH-P60FALH PKA-RP71FAL PKA-RP71FAL#1 PKH-P71FALH PKA-RP100FAL PKA-RP100FAL#1 PKH-P100FALH CN2D LED1 LED2 LED3 Connect to the indoor Power supply (I.B) Power supply (R.B) Transmission (Indoor/ CN3C power board (CN2S) outdoor) Transmission (Indoor/ (12.5~13.7V DC)
- Page 28 10-7-2. Indoor power board PKA-RP50FAL2 PKA-RP50FAL2#1 PKA-RP60FAL PKA-RP60FAL#1 PKH-P60FALH PKA-RP71FAL PKA-RP71FAL#1 PKH-P71FALH PKA-RP100FAL PKA-RP100FAL#1 PKH-P100FALH CN2S Connect to the indoor controller board (CN2D) Between 1 to 3 12.6-13.7V DC (Pin1 (+)) CNSK Connect to the indoor controller board (CNDK) Between 1 to 3 220-240V AC...
- Page 29 Setting by the dip switch and jumper wire Functions Remarks For service board Model settings Models Service board PKA-RP60FAL Capacity PKH-P60FALH settings PKA-RP50FAL2 PKA-RP71FAL PKH-P71FALH PKA-RP100FAL PKH-P100FALH <Initial setting> Wireless remote controller: 0 Control PCB setting Wireless remote Control PCB: (for both J41 and J42) Pair number controller setting Four pair number settings are supported.
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Page 30: Special Function
SPECIAL FUNCTION 11-1. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) For PKA-RP50FAL2#1,PKA-RP60/71/100FAL#1 11-1-1. Operation (1) Rotation function (and Back-up function) • Outline of functions · Main and sub unit operate alternately according to the interval of rotation setting. w Main and sub unit should be set by refrigerant address.(Outdoor Dip switch setting) Refrigerant address"00"... - Page 31 11-1-2. How to set rotation function(Back-up function, 2nd stage cut-in function) You can set these functions by wired remote controller.(Maintenance monitor) NOTICE Both main and sub unit should be set in same setting. Every time replacing indoor controller board for servicing, the function should be set again. (1) Request Code List Rotation setting Setting No.
- Page 32 (2) Setting method of each function by wired remote controller B: Refrigerant address C: Data display area D: Request code display area 1. Stop operation( ). 2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen ( ). TEST After a while, [00] appears in the refrigerant address number display area.(at 3.
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Page 33: Disassembly Procedure
DISASSEMBLY PROCEDURE PKA-RP50FAL2 PKA-RP50FAL2#1 PKA-RP60FAL PKA-RP71FAL PKA-RP100FAL PKA-RP60FAL#1 PKA-RP71FAL#1 PKA-RP100FAL#1 PKH-P60FALH PKH-P71FALH PKH-P100FALH OPERATING PROCEDURE PHOTOS&ILLUSTRATION 1. Removing the lower side of the indoor unit from the Figure 1 installation plate (1) Remove the 2 screws. Hang the indoor unit hangers to the catches on the instal- lation plate. - Page 34 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 indoor power board, the fan motor capacitor and the heater relay can be serviced. Indoor Capacitor power board...
- Page 35 OPERATING PROCEDURE PHOTOS 8. Removing the line flow 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 Line flow fan (4) Remove the drain pan. (5) Loosen the screw that fixes the line flow fan to the fan Fan motor motor.
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Page 36: Parts List
PARTS LIST(non-RoHS compliant) ELECTRICAL PARTS PKA-RP60FAL PKH-P60FALH PKA-RP71FAL PKH-P71FALH 16 17 Q'ty/set Wiring Recom- Remarks Part No. Part Name Specifi cation PKH-P·FALH PKA-RP·FAL Diagram mended (Drawing No.) Symbol Q'ty R01 Z61 102 BEARING MOUNT R01 12G 114 LEFT LINEFLOW FAN R01 G13 114 LEFT LINEFLOW FAN T7W E57 480 HEAT EXCHANGER R01 E61 480 HEAT EXCHANGER... - Page 37 From the previous page. Part number that is circled is not shown in the figure. ty/set Wiring Recom- Remarks Part No. Part Name Specification PKH-P PKA-RP Diagram mended ( Drawing No. ) Symbol FALH FALH 250V 6.3A R01 E02 239 FUSE FUSE —...
- Page 38 ELECTRICAL PARTS PKA-RP100FAL PKH-P100FALH 16 17 Q'ty/set Wiring Recom- Remarks Part No. Part Name Specifi cation PKH - P PKA - RP Diagram mended (Drawing No.) Symbol Q'ty 100FALH 100FAL R01 Z61 102 BEARING MOUNT R01 16G 114 LEFT LINEFLOW FAN R01 17G 114 LEFT LINEFLOW FAN T7W E22 480 HEAT EXCHANGER...
- Page 39 From the previous page. Part number that is circled is not shown in the figure. ty/set Wiring Recom- Remarks Part No. Part Name Specification PKH-P PKA-RP mended Diagram ( Drawing No. ) Symbol 100FALH 100FAL R01 E02 239 250V 6.3A FUSE FUSE —...
- Page 40 STRUCTURAL PARTS PKA-RP60FAL PKH-P60FALH PKA-RP71FAL PKH-P71FALH Part number that is circled is not shown in the figure. ty/set Wiring Recom- Remarks PKA- PKH- Part No. Part Name Specifications Diagram mended ( Drawing No. ) Symbol RP60FAL P60FALH RP71FAL P71FALH R01 12G 662 LEFT SIDE PANEL R01 E01 812 UNDER PLATE...
- Page 41 STRUCTURAL PARTS PKA-RP100FAL PKH-P100FALH Part number that is circled is not shown in the figure. ty/set Remarks Wiring Recom- PKA- PKH- Part No. Part Name Specification Diagram mended ( Drawing No. ) Symbol RP100FAL P100FALH R01 12G 662 LEFT SIDE PANEL R01 E00 812 UNDER PLATE R01 E01 811...
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Page 42: Rohs Parts List
RoHS PARTS LIST ELECTRICAL PARTS PKA-RP50FAL2 PKA-RP60FAL PKA-RP71FAL PKA-RP50FAL2#1 PKA-RP60FAL#1 PKA-RP71FAL#1 PKH-P60FALH PKH-P71FALH 16 17 Q'ty/set Wiring recom- Remarks PKH-P PKA-RP Part No. Part Name Specifi cation Diagram mended (Drawing No.) Symbol Q'ty FALH FALH FAL2 FAL2#1 FAL#1 FAL#1 R01 Z61 102... - Page 43 From the previous page. Part number that is circled is not shown in the figure. ty/set Recom- Wiring Remarks Part No. Part Name Specification PKH-P Diagram mended PKA-RP ( Drawing No. ) Symbol 60FAL 71FAL 50FAL2 60FALH 71FALH 71FAL#1 50FAL2#1 60FAL#1 250V 6.3A FUSE...
- Page 44 ELECTRICAL PARTS PKA-RP100FAL PKA-RP100FAL#1 PKH-P100FALH 16 17 Q'ty/set Wiring recom- Remarks Part No. Part Name PKH-P PKA-RP Specifi cation Diagram mended (Drawing No.) Symbol Q'ty 100FALH 100FAL 100FAL#1 R01 Z61 102 BEARING MOUNT R01 19G 114 LEFT LINEFLOW FAN R01 E24 114 LEFT LINEFLOW FAN T7W H35 480 HEART EXCHANGER T7W H38 480 HEART EXCHANGER...
- Page 45 From the previous page. Part number that is circled is not shown in the figure. Q'ty/set Wiring recom- Remarks Part No. Part Name PKH-P PKA-RP Specifi cation Diagram mended (Drawing No.) Symbol Q'ty 100FALH 100FAL 100FAL#1 17 G R01 E06 239 FUSE 250V 6.3A FUSE...
- Page 46 STRUCTURAL PARTS PKA-RP50FAL2 PKA-RP60FAL PKA-RP71FAL PKA-RP50FAL2#1 PKA-RP60FAL#1 PKA-RP71FAL#1 PKH-P60FALH PKH-P71FALH Part number that is circled is not shown in the figure. Q'ty/set Wiring Recom- PKA-RP PKH-P Remarks Part No. Part Name Specifi cations Diagram mended (Drawing No.) 50FAL2 50FAL2#1 60FALH...
- Page 47 STRUCTURAL PARTS PKA-RP100FAL PKA-RP100FAL#1 PKH-P100FALH Part number that is circled is not shown in the figure. Q'ty/set Wiring Recom- PKA-RP PKH-P Remarks Part No. Part Name Specifi cations Diagram mended (Drawing No.) Symbol Q'ty 100FAL 100FAL#1 100FALH R01 14G 662 LEFT SIDE PANEL R01 E03 812 UNDER PLATE...
- Page 48 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in May 2008 No.OC331 REVISED EDITION-B PDF 7 Distributed in Jun. 2006 No.OC331 REVISED EDITION-A PDF 8 New publication, effective May 2008.