Mitsubishi Electric Mr.SLIM PLA-RP35BA Service Manual
Pla series mr. slim
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Also See for Mr.SLIM PLA-RP35BA:
- Service manual (52 pages) ,
- Operation manual (30 pages) ,
- Technical data manual (126 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.]
PLA-RP35BA
PLA-RP35BA.UK
PLA-RP35BA
PLA-RP50BA.UK
PLA-RP50BA
PLA-RP50BA
PLA-RP60BA.UK
PLA-RP60BA
PLA-RP60BA
PLA-RP71BA.UK
PLA-RP71BA
PLA-RP71BA
PLA-RP100BA.UK PLA-RP100BA#2.UK
PLA-RP100BA
PLA-RP125BA.UK PLA-RP125BA#2.UK
PLA-RP125BA
PLA-RP140BA.UK PLA-RP140BA#2.UK
PLA-RP140BA
PLA-RP71BA2.UK
PLA-RP71BA2
PLA-RP100BA2.UK
PLA-RP100BA2
PLA-RP125BA2.UK
PLA-RP125BA2
PLA-RP140BA2.UK
PLA-RP140BA2
Model name
indication
INDOOR UNIT
ON/OFF
TEMP
WIRELESS REMOTE
CONTROLLER
.UK
PLA-RP35BA#2.UK
1
.UK
PLA-RP50BA#2.UK
1
.UK
PLA-RP60BA#2.UK
1
.UK
PLA-RP71BA#2.UK
1
TEMP.
ON/OFF
WIRED REMOTE
CONTROLLER
CONTENTS
1. TECHNICAL CHANGES .................................. 2
2. REFERENCE MANUAL ................................... 2
3. SAFETY PRECAUTION ................................... 3
4. PART NAMES AND FUNCTIONS ................... 4
5. SPECIFICATIONS ............................................ 7
6. NOISE CRITERION CURVES ......................... 11
7. OUTLINES AND DIMENSIONS ...................... 13
8. WIRING DIAGRAM ......................................... 14
9. REFRIGERANT SYSTEM DIAGRAM ............ 16
10. TROUBLESHOOTING .................................... 17
11. SPECIAL FUNCTION ..................................... 32
12. DISASSEMBLY PROCEDURE ....................... 41
PARTS CATALOG (OCB412)
August 2009
No. OCH412
REVISED EDITION-E
Revision:
• "11. SPECIAL
FUNCTION" has been
modified in REVISED
EDITION-E.
• Some descriptions have
been modified.
•
Please void OCH412
REVISED EDITION-D.
NOTE:
• This manual describes
only service data of the
indoor units.
• RoHS compliant prod-
ucts have <G> mark on
the spec name plate.
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Table of Contents
Troubleshooting
Related Manuals for Mitsubishi Electric Mr.SLIM PLA-RP35BA
Summary of Contents for Mitsubishi Electric Mr.SLIM PLA-RP35BA
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS August 2009 No. OCH412 REVISED EDITION-E SERVICE MANUAL Indoor unit [Model names] [Service Ref.] Revision: PLA-RP35BA PLA-RP35BA.UK • "11. SPECIAL FUNCTION" has been PLA-RP35BA PLA-RP35BA#2.UK modified in REVISED PLA-RP50BA.UK EDITION-E. PLA-RP50BA • Some descriptions have PLA-RP50BA PLA-RP50BA#2.UK... -
Page 2: Technical Changes
The controller board (U.B) has been changed. (only for the panel but not for the service part) PLA-RP140BA#2.UK PLA-RP140BA2.UK HEAT EXCHANGER has been changed. INDOOR CONTROLELR BOARD (I.B.) has been changed. (S/W version up) PLA-RP35BA PLA-RP35BA#2.UK PLA-RP50BA PLA-RP50BA#2.UK PLA-RP60BA PLA-RP60BA#2.UK PLA-RP71BA PLA-RP71BA#2.UK... -
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 utilising 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 4: Part Names And Functions
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 ·... -
Page 5: Wired Remote Controller
Wired remote controller “Sensor” indication Display Section Displayed when the remote controller sensor is used. Day-of-Week For purposes of this explanation, Shows the current day of the week. all parts of the display are shown as lit. During actual operation, only Time/Timer Display the relevant items will be lit. -
Page 6: Wireless Remote Controller
Wireless remote controller CHECK TEST RUN display CHECK and TEST RUN display indicate that the unit is being checked or test-run. MODEL SELECT display Blinks when model is selected. display Lights up while the signal is transmitted to the indoor unit when the button is pressed. display SET TEMP. -
Page 7: Specifications
SPECIFICATIONS Service Ref. PLA-RP35BA.UK PLA-RP35BA .UK PLA-RP35BA#2.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.03 0.02 Running current 0.22 0.14 External finish (Panel) Munsell 6.4Y 8.9/0.4 Heat exchanger Plate fin coil Fan (drive) Turbo fan (direct) Fan motor output 0.050... - Page 8 Service Ref. PLA-RP71BA.UK PLA-RP71BA PLA-RP71BA#2.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.07 0.06 Running current 0.51 0.43 External finish (Panel) Munsell 6.4Y 8.9/0.4 Heat exchanger Plate fin coil Fan (drive) Turbo fan (direct) 0.050 Fan motor output Airflow (Low-Medium2-Medium1-High)
- Page 9 Service Ref. PLA-RP140BA.UK PLA-RP140BA#2.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.16 0.15 Running current 1.07 1.00 External finish (Panel) Munsell 6.4Y 8.9/0.4 Heat exchanger Plate fin coil Fan(drive) Turbo fan (direct) Fan motor output 0.120 Airflow (Low-Medium2-Medium1-High) /min(CFM)
- Page 10 Service Ref. PLA-RP125BA2.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.16 0.15 Running current 1.07 1.00 External finish (Panel) Munsell 6.4Y 8.9/0.4 Heat exchanger Plate fin coil Fan (drive) Turbo fan (direct) Fan motor output 0.120 Airflow (Low-Medium2-Medium1-High) 22-25-28-31(780-880-990-1,090)
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Page 11: Noise Criterion Curves
NOISE CRITERION CURVES PLA-RP35BA.UK PLA-RP50BA.UK NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High PLA-RP35BA PLA-RP50BA Medium1 Medium1 PLA-RP35BA#2.UK PLA-RP50BA#2.UK Medium2 Medium2 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 HEARING FOR... - Page 12 PLA-RP100BA.UK PLA-RP125BA.UK NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High PLA-RP100BA#2.UK PLA-RP125BA#2.UK Medium1 Medium1 PLA-RP100BA2.UK PLA-RP125BA2.UK Medium2 Medium2 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 HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE...
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Page 13: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK Ceiling hole Unit: mm 20~45 20~45 860~910 Detail connecting of branch duct(Both aspects) Fresh air... -
Page 14: Wiring Diagram
WIRING DIAGRAM PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK [LEGEND] <Table 1>SW1(MODEL SELECTION) SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD FAN MOTOR CN2L CONNECTOR (LOSSNAY) VANE MOTOR SETTING CN32... - Page 15 PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK [LEGEND] <Table 1> SW1 (MODEL SELECTION) SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD FAN MOTOR MODELS SETTING CN2L VANE MOTOR CONNECTOR (LOSSNAY) PLA-RP71BA2 CN32 CONNECTOR (REMOTE SWITCH) TERMINAL BLOCK (Indoor unit Power (option)) 1 2 3 4 5 PLA-RP100BA2 CN41 CONNECTOR (HA TERMINAL-A)
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Page 16: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK Strainer (#50) Heat exchanger Refrigerant GAS pipe connection (Flare) Thermistor TH5 (Cond./ Eva.temperature) Refrigerant flow in cooling... -
Page 17: 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 18 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 19 • 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 20 • 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 21: High
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 22 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 blockage.
- Page 23 Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor Pipe temperature thermistor/ 1–3 Check resistance value of thermistor. Condenser-Evaporator (TH5) characteristics For characteristics, refer to (P1) above. 1 The unit is in 3-minute resume protec- 2 Contact failure of connector 2 Check contact failure of connector (CN44) tion mode if short/open of thermistor is (CN44) on the indoor controller...
- Page 24 Abnormal 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 25: 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. is off. 1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power door unit. - Page 26 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 is blinking. Connection failure of indoor/outdoor unit connecting for connection failure.
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Page 27: Emergency Operation
10-5. EMERGENCY OPERATION 10-5-1. When wireless remote controller fails or its battery is exhausted When the remote controller cannot be used When the batteries of the remote controller run out or the remote control- ler malfunctions, the emergency operation can be done using the emer- gency buttons on the grille. - Page 28 10-6. HOW TO CHECK THE PARTS PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester.
- Page 29 10-6-1. Thermistor < Thermistor for lower temperature > <Thermistor Characteristic graph> Room temperature thermistor (TH1) Thermistor for Pipe temperature thermistor/liquid (TH2) lower temperature Condenser/evaporator temperature thermistor (TH5) Thermistor R =15k' ± 3% Fixed number of B=3480 ± 2% Rt=15exp { 3480( 273+t 15k' 9.6k'...
- Page 30 10-7.TEST POINT DIAGRAM Indoor controller board PLA-RP35/50/60/71/100/125/140BA.UK PLA-RP35/50/60/71BA PLA-RP30/50/60/71/100/125/140BA#2.UK PLA-RP71/100/125/140BA2.UK CN3G LED3 Connect to the auto grille controller board (CN3G) Transmission (Indoor/outdoor) CN90 13V pulse output Connect to the wireless remote controller board Vane motor output (MV) (CNB) 12V pulse output CN4Y i-see sensor Model selection...
- Page 31 PLA-RP140BA2 MODELS SETTING MODELS SETTING Capacity 1 2 3 4 5 1 2 3 4 5 PLA-RP35BA PLA-RP100BA(2) settings 1 2 3 4 5 1 2 3 4 5 PLA-RP50BA PLA-RP125BA(2) 1 2 3 4 5 1 2 3 4 5...
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Page 32: Special Function
SPECIAL FUNCTION 11-1. HOW TO PERFORM THE UP/DOWN OPERATION OF THE AIR INTAKE GRILLE 11-1-1. Setting up the lowering distance of air intake grille Unit You can set up 8 different stages of lowering distance for Decorative the air intake grille according to the set up location if desired. panel * As a factory default, the decorative panel will automatically stop at 1.6 m from the ceiling surface. -
Page 33: General Operation
11-1-3. How to perform the up/down operation using wired remote controller (PAR-21MAA) ■General Operation * Raise or lower all the air intake grilles managed by the remote controller at the same time. Install the remote controller in a place where you can observe all the air-conditioners. Otherwise, the lowering grille may make contact with something and cause damage to it. - Page 34 ■ Up/down operation with the individual specified air-conditioner (when used in combination with Mr. SLIM model) * Raise or lower the air intake grille of the specific air-conditioner that you select from all that are managed by that remote controller. 1) Ensure that the air-conditioner is not running.
- Page 35 11-2. OPERATION (AUTOMATIC FILTER ELEVATION PANEL: PLP-6BAJ) (1) Normal operation UP/DOWN Wire 1b Air intake grille is raised/lowered by UP/DOWN UP/DOWN commands of UP and DOWN. Machine 2 Machine 1 Air intake grille does not move under the state of no-load detection or obstacle detection. Air intake grille stops automatically at the set lowering distance from the ceiling level.
- Page 36 11-3. ELECTRICAL CIRCUIT (Controller board and wiring diagram (Panel)) 11-3-1. Dip SW 22 type SW22 Panel Indoor unit (WHT) LS21 CN3G CN90 (WHT) (BLK) CN2G (BLK) CN3G (BLK) FUSE CN22 (BLU) CN2F (BLK) CNAC (WHT) CN2E LS21 (RED) CN2B CN2C (WHT) GRN/YLW (WHT)
- Page 37 11-3-3. Check point of trouble <LED (SW22 type) /LED2 (SW2 type) display> Turn OFF : No power supply Blink : Storage detection switch ON (short) One blink : Storage detection switch OFF (open) Two blinks : Tension detection switch OFF (open) <controller board>...
- Page 38 11-5. ROTATION FUNCTION (AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) 11-5-1. 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 39 • System constraint · This function is available only in cooling mode. Ex.) Set temp. by R/C = 20: [2nd stage cut-in function]··· Request code number "322~324" Set point = 26: When request code number is “323”. Room temp. Set point Room temp.
- Page 40 (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.
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Page 41: Disassembly Procedure
DISASSEMBLY PROCEDURE PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 1. Removing the air intake grille... - Page 42 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS Coil plate Photo 3 6. Removing the fan and fan motor (MF) (1) Remove the electrical box. (See Photo 2) (2) Remove the bell mouth (3 screws). (See Photo 2) (3) Remove the turbo fan nut. (4) Pull out the turbo fan.
- Page 43 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS Photo 8 10. Removing the drain pump (DP) and float switch (FS) (1) Remove the drain pan. (See Photo 6) Float switch (2) Cut the hose band and remove the hose. (3) Remove the drain pump assembly (3 screws and 2 hooks). Hose band (4) Remove the drain pump (3 screws).
- Page 44 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Aug. 2009 No.OCH412 REVISED EDITION-E PDF 6 Distributed in Mar. 2009 No.OCH412 REVISED EDITION-D PDF 6 Distributed in Apr. 2008 No.OCH412 REVISED EDITION-C PDF 7 New publication, effective Aug.