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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
SERVICE MANUAL
Indoor unit
[Model Name]
PSA-RP71KA
PSA-RP100KA
PSA-RP125KA
PSA-RP140KA
[Service Ref.]
PSA-RP71KA
PSA-RP100KA
PSA-RP125KA
PSA-RP140KA
Model name
indication
Revision:
• Some descriptions have been
modified.
OCH528 REVISED EDITION-A
is void.
Notes:
• This manual describes only
service data of the indoor
units.
CONTENTS
1. REFERENCE MANUAL .................................. 2
2. SAFETY PRECAUTION .................................. 3
3. PARTS NAMES AND FUNCTIONS ................ 5
4. SPECIFICATIONS ........................................... 7
5. NOISE CRITERION CURVES ......................... 9
6. OUTLINES AND DIMENSIONS ..................... 10
7. WIRING DIAGRAM ........................................ 11
8. REFRIGERANT SYSTEM DIAGRAM ........... 12
9. TROUBLESHOOTING ................................... 13
10. SPECIAL FUNCTION .................................... 23
11. DISASSEMBLY PROCEDURE ...................... 26
PARTS CATALOG (OCB528)
September 2018
No. OCH528
REVISED EDITION-B
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Table of Contents
Related Manuals for Mitsubishi Electric PSA-RP71KA
Summary of Contents for Mitsubishi Electric PSA-RP71KA
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Page 1: Table Of Contents
SPLIT-TYPE, AIR CONDITIONERS September 2018 No. OCH528 REVISED EDITION-B SERVICE MANUAL Indoor unit [Model Name] [Service Ref.] Revision: • Some descriptions have been PSA-RP71KA PSA-RP71KA modified. OCH528 REVISED EDITION-A is void. PSA-RP100KA PSA-RP100KA Notes: PSA-RP125KA • This manual describes only... -
Page 2: Reference Manual
REFERENCE MANUAL 1-1. OUTDOOR UNIT’S SERVICE MANUAL Model Name Service Ref. Service Manual No. PUHZ-ZRP71VHA PUHZ-ZRP71VHA PUHZ-ZRP71VHAR1(-ER/ET) PUHZ-ZRP100/125/140VKA OCH527/OCB527 PUHZ-ZRP100/125/140VKA PUHZ-ZRP100/125/140YKA PUHZ-ZRP100/125/140YKA(R1) PUHZ-P100/125/140VHA3.UK PUHZ-P100/125/140VHA3R1.UK PUHZ-P100/125/140VHA3R2.UK PUHZ-P100/125/140VHA3 PUHZ-P125/140VHA3R3.UK PUHZ-P100/125/140YHA OCH415/OCB415 PUHZ-P100/125/140YHA.UK PUHZ-P100YHA2 PUHZ-P100/125/140YHAR1.UK PUHZ-P125/140YHAR2.UK PUHZ-P100YHA2.UK PU(H)-P71/100VHA#1.UK PU(H)-P71/100VHA#2.UK PU(H)-P71/100VHA#3.UK PU(H)-P71/100VHA PU(H)-P71/100/125/140YHA#1.UK OC379 PU(H)-P71/100/125/140YHA PU(H)-P71/100/125/140YHA#2.UK PU(H)-P71/100/125/140YHAR3.UK... -
Page 3: Safety Precaution
SAFETY PRECAUTION 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 following. - Page 4 [1] Cautions for service (1) Perform service after collecting the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them. [2] Additional refrigerant charge When charging directly from cylinder (1) Check that cylinder for R410A on the market is syphon type.
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Page 5: Parts Names And Functions
PARTS NAMES AND FUNCTIONS Indoor Unit Disperses air up and down Disperses air left and right. Removes dust and pollutants from intake air. (Intakes air from room.) • Controller Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. •... - Page 6 • Display “Sensor” indication Displayed when the remote controller sensor is used. Day-of-Week For the purposes of explanation, Shows the current day of the week. all parts of the display are shown. During actual operation, only the Time/Timer Display relevant items will be lit. “Locked”...
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Page 7: Specifications
SPECIFICATIONS PSA-RP71KA Service Ref. Cooling Heating Mode Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.06 0.06 Running current 0.40 0.40 External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Fan(drive) o No. Centrifugal (direct) o 1 Fan motor output 0.12... - Page 8 PSA-RP140KA Service Ref. Cooling Mode Heating Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.11 0.11 Running current 0.73 0.73 External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Centrifugal (direct) o 1 Fan(drive) x No. Fan motor output 0.16 K/min(CFM) Airflow (Low-Middle-High)
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Page 9: Noise Criterion Curves
NOISE CRITERION CURVES PSA-RP100KA PSA-RP71KA SPL(dB) LINE NOTCH SPL(dB) LINE NOTCH PSA-RP125KA High High Middle Middle 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 NC-20 CONTINUOUS CONTINUOUS... -
Page 10: Outlines And Dimensions
OUTLINES AND DIMENSIONS PSA-RP71KA Unit : mm (inch) PSA-RP100KA PSA-RP125KA PSA-RP140KA OCH528B... -
Page 11: Wiring Diagram
WIRING DIAGRAM PSA-RP71KA PSA-RP100KA PSA-RP125KA PSA-RP140KA SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD SWITCH <MODEL SELECTION> * See Table 1. TERMINAL BLOCK option for PSA-RP.KA models. FUSE FUSE (T6.3AL250V) SWITCH <CAPACITY CODE> * See Table 2. CN2L CONNECTOR<LOSSNAY>... -
Page 12: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PSA-RP71KA PSA-RP100KA PSA-RP125KA PSA-RP140KA 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 (TH2) thermistor (TH1) -
Page 13: Troubleshooting
TROUBLESHOOTING 9-1. TROUBLESHOOTING <Check code display by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the wired remote controller or controller board of out- door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa- rized in the table below. - Page 14 9-2. SELF-DIAGNOSIS ACTION TABLE Note: Refer to the manual of outdoor unit for the details of display such as F, U, and other E. Abnormal point and detection method Countermeasure Check Code Cause Room temperature thermistor (TH1) 1 Defective thermistor 1–3 Check resistance value of thermistor.
- Page 15 Abnormal point and detection method Countermeasure Check Code Cause Pipe temperature 1 Slight temperature difference 1–4 Check pipe <liquid or condenser/ <Cooling mode> between indoor room evaporator> temperature with room Detected as abnormal when the pipe temperature and pipe <liquid temperature display on remote controller temperature is not in the cooling range or condenser/evaporator>...
- Page 16 Abnormal point and detection method Countermeasure Check Code Cause Remote controller transmission 1 Contact failure at transmission 1 Check disconnection or looseness of indoor error(E0)/signal receiving error(E4) unit or transmission wire of remote controller. wire of remote controller 2 Set one of the remote controllers “main” 1 Abnormal if main or sub remote controller 2 All remote controllers are set if there is no problem with the action above.
- Page 17 Abnormal point and detection method Countermeasure Check Code Cause 1 Defective transmitting receiving Indoor/outdoor unit communication 1–3 Turn the power off, and on again to error (Transmitting error) circuit of indoor controller board check. If abnormality generates again, Abnormal if “1” receiving is detected 30 2 Noise has entered into power replace indoor controller board.
- Page 18 9-3. 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- is off.
- Page 19 4 Contact failure of connector between wireless remote if indoor controller board is replaced, controller receiver board and indoor controller board. replace wireless remote controller receiver board. 9-4. HOW TO CHECK THE PARTS PSA-RP71KA PSA-RP100KA PSA-RP125KA PSA-RP140KA Parts name Check points Disconnect the connector then measure the resistance with a tester.
- Page 20 9-4-1. Thermistor <Thermistor characteristic graph> < Thermistor for lower temperature > Room temperature thermistor (TH1) Thermistor for Pipe temperature thermistor (TH2) lower temperature Condenser/evaporator temperature thermistor (TH5) Thermistor R =15 k" ± 3% Fixed number of B=3480 ± 2% Rt=15exp { 3480( 273+t 15 k"...
- Page 21 9-5. TEST POINT DIAGRAM Indoor controller board PSA-RP71KA PSA-RP100KA PSA-RP125KA PSA-RP140KA CN90 Connect to the wireless remote controller receiver board (CNB) Model selection LED3 Transmission (Indoor/outdoor) Capacity setting CN2L CN105 Connector (LOSSNAY) LED2 Jumper wire J41,J42 Power supply (R.B) Pair No. setting for wireless...
- Page 22 Setting by the dip switch and jumper wire Remarks Functions Model settings Manufacture/Service MODELS 1 2 3 4 5 PSA-RP71KA 1 2 3 4 5 PSA-RP100KA Capacity settings 1 2 3 4 5 PSA-RP125KA 1 2 3 4 5 PSA-RP140KA <Initial setting>...
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Page 23: Special Function
SPECIAL FUNCTION 10-1. ROTATION FUNCTION (AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) For PSA-RP71/100/125/140KA 10-1-1. Operation (1) Rotation function (and Back-up function) • Outline of functions · Main and sub unit operate alternately according to the interval of rotation setting. Main and sub unit should be set by refrigerant address. - Page 24 10-1-2. 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 25 (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(1). 2. Press the button (2) for 3 seconds so that [Maintenance mode] appears on the screen (A). TEST After a while, [00] appears in the refrigerant address number display area.(at B ) 3.
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Page 26: Disassembly Procedure
DISASSEMBLY PROCEDURE PSA-RP71KA PSA-RP100KA PSA-RP125KA PSA-RP140KA : Indicates the visible parts in the photos/figures. : Indicates the invisible parts in the photos/figures. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the intake grille Photo 1 (1) Remove the screw at the center of the knob of the intake grille. (2) Pull the knob of the intake grille toward you. - Page 27 OPERATING PROCEDURE PHOTOS/FIGURES 4. Removing the indoor fan and the indoor fan Photo 4-1 motor (1) Remove the intake grille. (Refer to Procedure 1) (2) Remove the electrical parts cover. (Refer to Procedure 2) (3) Turn the bell mouth clockwise to remove. (4) Remove the fan nut and the washer.
- Page 28 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the louver motor Photo 6-1 Top panel Screws of top panel (1) Remove the intake grille. (Refer to Procedure 1) (2) Remove the electrical parts cover. (Refer to Procedure 2) (3) Remove the front panel. (Refer to Procedure 5) Screws of (4) Remove the 5 screws of the swing louver and swing louver...
- Page 29 OPERATING PROCEDURE PHOTOS/FIGURES 8. Removing the indoor heat exchanger Photo 8-1 Screws of indoor heat exchanger (1) Remove the intake grille. (Refer to Procedure 1) (2) Remove the front panel. (Refer to Procedure 5) (3) Remove the swing louver. (See Photos 6-1 and 6-2) (4) Remove the 6 screws of the top panel and remove the top panel.
- Page 30 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2012 MITSUBISHI ELECTRIC CORPORATION Issued: Sep. 2018 No.OCH528 REVISED EDITION-B Issued: Mar. 2017 No.OCH528 REVISED EDITION-A Published: Oct. 2012 No.OCH528 Specifications are subject to change without notice. Made in Japan.