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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
PLA-RP35BA
PLA-RP50BA
PLA-RP50BA
PLA-RP50BA
PLA-RP60BA
PLA-RP60BA
PLA-RP60BA
PLA-RP71BA
PLA-RP71BA
PLA-RP71BA
PLA-RP100BA
PLA-RP100BA
PLA-RP125BA
PLA-RP125BA
PLA-RP140BA
PLA-RP140BA
Model name
indication
INDOOR UNIT
ON/OFF
TEMP
WIRELESS REMOTE
CONTROLLER
PLA-RP35BAR1
1
PLA-RP50BAR1
1
PLA-RP60BAR1
1
PLA-RP71BAR1
1
TEMP.
ON/OFF
WIRED REMOTE
CONTROLLER
REVISED EDITION-D
Revision:
• PLA-RP35/50/60/71BAR1
• Some descriptions have
• Please void OCH416
Note:
• This manual describes only
• RoHS compliant products
CONTENTS
1. TECHNICAL CHANGES .................................. 2
2. REFERENCE MANUAL ................................... 2
3. SAFETY PRECAUTION ................................... 3
4. PART NAMES AND FUNCTIONS .................... 4
5. SPECIFICATIONS .......................................... 12
6. NOISE CRITERION CURVES ........................ 15
7. OUTLINES AND DIMENSIONS ..................... 17
8. WIRING DIAGRAM ......................................... 18
9. REFRIGERANT SYSTEM DIAGRAM ............ 19
10. TROUBLESHOOTING .................................... 20
11. SPECIAL FUNCTION ..................................... 35
12. DISASSEMBLY PROCEDURE ....................... 42
PARTS CATALOG (OCB416)
September 2012
No. OCH416
have been added in
REVISED EDITION-D.
been modified.
REVISED EDITION-C.
service data of the indoor
units.
have <G> mark on the
spec name plate.
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Table of Contents
Related Manuals for Mitsubishi Electric Mr. Slim PLA-RP35BA1
Summary of Contents for Mitsubishi Electric Mr. Slim PLA-RP35BA1
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS September 2012 No. OCH416 REVISED EDITION-D SERVICE MANUAL Indoor unit [Model names] [Service Ref.] Revision: PLA-RP35BA • PLA-RP35/50/60/71BAR1 PLA-RP35BA have been added in REVISED EDITION-D. PLA-RP35BA PLA-RP35BAR1 • Some descriptions have been modified. PLA-RP50BA PLA-RP50BA •... -
Page 2: Technical Changes
TECHNICAL CHANGES Service ref. have been changed as follows. PLA-RP35BA PLA-RP35BAR1 PLA-RP50BA PLA-RP50BAR1 PLA-RP60BA PLA-RP60BAR1 PLA-RP71BA PLA-RP71BAR1 PLP-6BAJ (Auto descending panel, option) The controller board (U.B) has been changed. (only for the panel but not for the service part) PLA-RP35BA PLA-RP35BA PLA-RP50BA PLA-RP50BA... -
Page 3: Safety Precaution
SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilising refrigerant R410A Use a vacuum pump with a reverse flow check Use new refrigerant pipes. valve. In case of using the existing pipes for R22, be careful with Vacuum pump oil may flow back into refrigerant cycle and 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 4-2. 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 6 4-3. WIRED REMOTE CONTROLLER <PAR-30MAA> Wired remote controller function * The functions which can be used are restricted according to the model. : Supported : Unsupported PAR-30MAA Function PAR-21MAA Slim City multi Body Product size H × W × D (mm) 120 ×...
- Page 7 The main display can be displayed in two different modes: "Full" and "Basic". The factory setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting. <Full mode> <Basic mode> * All icons are displayed for explanation. Cool Set temp.
- Page 8 Menu structure Press the button. MENU Main menu Move the cursor to the desired item with the buttons, and press the SELECT button. Vane · Louver · Vent. (Lossnay) High power Timer On / Off timer Auto-Off timer Filter information Error information Weekly timer Energy saving...
- Page 9 Main menu list Setting and display items Setting details Vane · Louver · Vent. Use to set the vane angle. (Lossnay) • Select a desired vane setting from fi ve different settings. Use to turn ON / OFF the louver. •...
- Page 10 Setting and display items Setting details Initial setting Display Make the settings for the remote controller related items as necessary. details Clock: The factory settings are "Yes" and "24h" format. Temperature: Set either Celsius (°C) or Fahrenheit (°F). Room temp. : Set Show or Hide. Auto mode: Set the Auto mode display or Only Auto display.
- Page 11 4-4. WIRED REMOTE CONTROLLER <PAR-21MAA> “Sensor” indication Display Section Displays 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. During actual operation, only Time/Timer Display the relevant items will be lit.
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Page 12: Specifications
SPECIFICATIONS Service Ref. PLA-RP35BA PLA-RP35BA PLA-RP35BAR1 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 Airflow (Low-Medium2-Medium1-High) - Page 13 Service Ref. PLA-RP71BA PLA-RP71BA PLA-RP71BAR1 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) Fan motor output 0.050 Airflow (Low-Medium2-Medium1-High)
- Page 14 Service Ref. PLA-RP140BA 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)
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Page 15: Noise Criterion Curves
NOISE CRITERION CURVES PLA-RP35BA PLA-RP50BA NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High PLA-RP35BA PLA-RP50BA Medium1 Medium1 PLA-RP35BAR1 PLA-RP50BAR1 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... - Page 16 PLA-RP100BA PLA-RP125BA NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High Medium1 Medium1 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 NOISE 1000 2000 4000...
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Page 17: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA Unit : mm PLA-RP100BA PLA-RP125BA PLA-RP140BA PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BAR1 PLA-RP50BAR1 PLA-RP60BAR1 PLA-RP71BAR1 Ceiling hole 20~45 20~45 860~910 Detail connecting of branch duct(Both aspects) Fresh air Suspension bolt pitch intake hole Cut out hole Remote controller terminal block Indoor unit/Outdoor unit... -
Page 18: Wiring Diagram
WIRING DIAGRAM PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP100BA PLA-RP125BA PLA-RP140BA PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BAR1 PLA-RP50BAR1 PLA-RP60BAR1 PLA-RP71BAR1 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD REACTOR OPTION PART CN2L CONNECTOR (LOSSNAY) DRAIN PUMP PCB FOR WIRELESS REMOTE CONTROLLER CN32 CONNECTOR (REMOTE SWITCH) DRAIN FLOAT SWITCH... -
Page 19: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP100BA PLA-RP125BA PLA-RP140BA PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BAR1 PLA-RP50BAR1 PLA-RP60BAR1 PLA-RP71BAR1 Strainer (#50) Heat exchanger Refrigerant GAS pipe connection (Flare) Thermistor TH5 (Cond./ Eva.temperature) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Thermistor TH2 Pipe temperature(Liquid) -
Page 20: 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 21 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] Refrigerant 1.
- Page 22 • 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 23 • 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 the test run, refer to the following table to find out the cause. Symptom Cause Wired remote controller...
- Page 24 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) 0: ..
- Page 25 Abnormal point and detection method Countermeasure Error Code Cause Freezing/overheating protection is (Cooling or drying mode) (Cooling or drying mode) operating 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 26 Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor 1–3 Check resistance value of thermistor. Pipe temperature thermistor/ Condenser-Evaporator (TH5) characteristics For characteristics, refer to (P1) above. 1 The unit is in 3-minute resume protection 2 Contact failure of connector 2 Check contact failure of connector (CN44) mode if short/open of thermistor is (CN44) on the indoor controller...
- Page 27 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 indoor/outdoor unit connecting tool, PAC-SK52ST.) cannot receive any signal normally for 6...
- Page 28 10-4. TROUBLESHOOTING OF PROBLEMS 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 1 Check the voltage of outdoor power is off.
- Page 29 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.
- Page 30 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 31 10-6. HOW TO CHECK THE PARTS PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP100BA PLA-RP125BA PLA-RP140BA PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BAR1 PLA-RP50BAR1 PLA-RP60BAR1 PLA-RP71BAR1 Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester. thermistor (TH1) (At ambient temperatures of 10 ~30 ) Pipe temperature Normal Abnormal...
- Page 32 10-6-1. Thermistor <Thermistor Characteristic graph> < Thermistor for lower temperature > 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' 6.3k' 5.4k'...
- Page 33 10-7. TEST POINT DIAGRAM Indoor controller board PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP100BA PLA-RP125BA PLA-RP140BA PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BAR1 PLA-RP50BAR1 PLA-RP60BAR1 PLA-RP71BAR1 LED3 CN3G CN90 Transmission Connect to the auto grille controller board (CN3G) Connect to the wireless remote (Indoor/outdoor) 13V pulse output controller board (CNB) Vane motor output (MV)
- Page 34 10-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the dip switch and the jumper wire on control P.C. board. The black square (■) indicates a switch position (Marks in the table below) Jumper wire ( : Short : Open) Jumper wire...
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Page 35: 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 level. - Page 36 11-1-2. How to perform the up/down operation using wireless remote controller Ensure that the air-conditioner is not running. Warning: • Otherwise, it may cause an injury or a failure. 1) Ensure that the air-conditioner is not running. 2) Press the "Down" button to lower the air intake grille. * By default, the air intake grille will automatically stop at a lowering distance of 1.6 m from the ceiling level.
- Page 37 11-1-4. 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 38 Up/down operation on the individual specified indoor units (when used in combination with Mr. SLIM model) * Raise or lower the air intake grille of the specific indoor unit that you select from all that are managed by that remote controller. 1) Ensure that the air-conditioner is not running.
- Page 39 11-2. OPERATION (AUTO DESCENDING 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 40 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 41 11-4. TROUBLESHOOTING • Check the following points. Problem Possible Reason Corrective Action Air intake grille does not Air-conditioner is running. Stop running the air-conditioner and try again. function under operation of Power failure After recovering from power failure, try again. the wireless remote controller.
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Page 42: Disassembly Procedure
DISASSEMBLY PROCEDURE PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP100BA PLA-RP125BA PLA-RP140BA PLA-RP35BA PLA-RP50BA PLA-RP60BA PLA-RP71BA PLA-RP35BAR1 PLA-RP50BAR1 PLA-RP60BAR1 PLA-RP71BAR1 Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 1. Removing the air intake grille Figure 1 (1) Slide the knob of air intake grille toward the arrow 1 to Filter open the air intake grille. - Page 43 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 44 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 45 OCH416D...
- Page 46 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2007 MITSUBISHI ELECTRIC CORPORATION Distributed in Sep. 2012 No.OCH416 REVISED EDITION-D Distributed in Feb. 2012 No.OCH416 REVISED EDITION-C Distributed in Oct. 2009 No.OCH416 REVISED EDITION-B PDF 7 New publication, effective Sep. 2012 Distributed in Nov.
- Page 47 Related Links Model Number: PLA-RP71BA PAC-SH51SP-E Installation Manual PLA-ZRP & PLA-RP Installation Manual (RG79D506K04) PLA-RP35-140 Service Manual OCH412F PLA-RP35-140 Parts Catalog OCB412F PLA-RP35-140 Instruction Book PLA-RP35-100 Declaration of Conformity PLA-RP35-100BA_Declaration_of_Conformity_(CE2013C01) PLA-RP35-140BA_Installation_Manual_(BH79D045K01) PLA-RP35-140BA_Instruction_Book_(BH79D045H01) PLA-RP35-140BA_Parts_Catalog_(OCB416C) PLA-RP35-140BA_Service_Manual_(OCH416D)