Advertisement
Quick Links
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
PLA-RP71BA.UK
PLA-RP71BA
PLA-RP100BA
PLA-RP100BA.UK PLA-RP100BA#2.UK
PLA-RP125BA
PLA-RP125BA.UK PLA-RP125BA#2.UK
PLA-RP140BA
PLA-RP140BA.UK PLA-RP140BA#2.UK
PLA-RP71BA2
PLA-RP71BA2.UK
PLA-RP100BA2
PLA-RP100BA2.UK
PLA-RP125BA2.UK
PLA-RP125BA2
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
REVISED EDITION-C
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)
April 2008
No. OCH412
Revision:
• PLA-RP35~140BA#2.UK
are added in REVISED
EDITION-C.
• Some descriptions have
been modified.
Please void OCH412
•
REVISED EDITION-B.
NOTE:
• This manual describes
only service data of the
indoor units.
• RoHS compliant products
have <G> mark on the
spec name plate.
Advertisement
Related Manuals for Mitsubishi Electric PLA-RP35BA.UK
Summary of Contents for Mitsubishi Electric PLA-RP35BA.UK
- Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS April 2008 No. OCH412 REVISED EDITION-C SERVICE MANUAL Indoor unit [Model names] [Service Ref.] PLA-RP35BA PLA-RP35BA.UK PLA-RP35BA PLA-RP35BA#2.UK Revision: PLA-RP50BA.UK • PLA-RP35~140BA#2.UK PLA-RP50BA are added in REVISED PLA-RP50BA PLA-RP50BA#2.UK EDITION-C. • Some descriptions have PLA-RP60BA.UK...
- Page 2 PLA-RP60BA PLA-RP60BA#2.UK PLA-RP71BA PLA-RP71BA#2.UK PLA-RP100BA.UK PLA-RP100BA#2.UK PLA-RP125BA.UK PLA-RP125BA#2.UK PLA-RP140BA.UK PLA-RP140BA#2.UK INDOOR CONTROLELR BOARD(I.B.) has been changed. PLA-RP35BA.UK PLA-RP35BA PLA-RP50BA.UK PLA-RP50BA PLA-RP60BA.UK PLA-RP60BA PLA-RP71BA.UK PLA-RP71BA FAN MOTOR(MF) has been changed. TURBO FAN, NUT and WASHER have been changed. REFERENCE MANUAL OUTDOOR UNIT’S SERVICE MANUAL Service Manual No.
- Page 3 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 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.
- Page 5 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 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 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) Fan motor output 0.050 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-RP71BA2.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) Fan motor output 0.050 Airflow (Low-Medium2-Medium1-High) 14-16-18-21(485-565-635-740)
- Page 11 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...
- Page 13 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 Ceiling hole 20~45 20~45 860~910 Detail connecting of branch duct(Both aspects) Fresh air Suspension bolt pitch...
- Page 14 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] SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD FAN MOTOR <Table 1>SW1(MODEL SELECTION) CN2L VANE MOTOR CONNECTOR (LOSSNAY) CN32 CONNECTOR (REMOTE SWITCH)
- Page 15 PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK [LEGEND] SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD FAN MOTOR CN2L CONNECTOR (LOSSNAY) VANE MOTOR CN32 CONNECTOR (REMOTE SWITCH) TERMINAL BLOCK (Indoor unit Power (option)) CN41 CONNECTOR (HA TERMINAL-A) TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE) CN51 CONNECTOR (CENTRALLY CONTROL) TB5,TB6 TERMINAL BLOCK (REMOTE CONTROLLER SURGE ABSORBER...
- Page 16 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 Strainer (#50) Heat exchanger Refrigerant GAS pipe connection (Flare) Thermistor TH5 (Cond./ Eva.temperature) Refrigerant flow in cooling...
- Page 17 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...
- Page 21 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 shields.
- 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 1 The unit is in 3-minute resume protec- 2 Contact failure of connector For characteristics, refer to (P1) above. 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...
- Page 25 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 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.
- Page 27 10-5. EMERGENCY OPERATION 10-5-1. When wireless remote controller troubles 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 Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester.
- Page 29 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 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-RP71/100/125BA2.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 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. (Marks in the table below) Jumper wire ( : Short : Open) Jumper wire Setting by the dip switch and jumper wire Remarks Functions MODELS...
- Page 32 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 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 instructions of “UP” and “DOWN”. Machine 2 Machine 1 Air intake grille does not move under the state of no-load detection or obstacle detection.
- Page 36 11-3. ELECTRICAL CIRCUIT (1) Wiring diagram (Panel) Panel Indoor unit (WHT) LS21 CN3G CN90 (WHT) (BLK) CN2G (BLK) CN3G (BLK) CN22 FUSE (BLU) CN2F (BLK) CNAC (WHT) CN2E LS21 (RED) CN2B CN2C (WHT) GRN/YLW (WHT) CN3A SW22 (RED) 1 2 3 4 5 6 7 8 9 10 Symbol Name Symbol...
- Page 37 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 with operation of the Power failure After recovering from power failure, try again. wireless remote controller.
- Page 38 11-5. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) For PLA-RP71/100/125BA2.UK,PLA-RP35/50/60/71/100/125/140BA#2.UK 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 11-5-2. 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 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.(at 3.
- Page 41 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 Be careful on 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 Apr. 2008 No.OCH412 REVISED EDITION-C PDF 7 New publication, effective Apr. 2008 Distributed in Feb. 2008 No.OCH412 REVISED EDITION-B PDF 7 Specifications subject to change without notice Distributed in Oct.