Table of Contents
Advertisement
SPLIT-TYPE AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Series PLA
Indoor unit
[Model names]
PLA-RP3AA
PLA-RP4AA
PLA-RP5AA
PLA-RP6AA
INDOOR UNIT
CHECK TEST RUN
MODEL SELECT
˚C
AMPM
AMPM
NOT AVAILABLE
ON/OFF
TEMP
WIRELESS REMOTE
CONTROLLER
Ceiling Cassettes
[Service Ref.]
PLA-RP3AA.UK
PLA-RP4AA.UK
PLA-RP5AA.UK
PLA-RP6AA.UK
CENTRALLY CONTROLLED
1Hr.
ON OFF
˚C
CLOCK
CHECK
FILTER
CHECK MODE
˚C
TEST RUN
STAND BY
ERROR CODE
NOT AVAILABLE
FUNCTION
DEFROST
TEMP.
ON/OFF
WIRED REMOTE
CONTROLLER
R410A
• Refer to the OCT04 as for control
relation.This manual does not cover
outdoor units.
When serving them, please refer to
the service manual No.OC294 and
this manual in a set.
CONTENTS
1. SAFETY PRECAUTION·······························2
2. PART NAMES AND FUNCTIONS ···············4
3. SPECIFICATIONS ········································7
4. DATA···························································11
5. OUTLINES AND DIMENSIONS ·················23
6. WIRING DIAGRAM ····································24
7. REFRIGERANT SYSTEM DIAGRAM···········25
8. TROUBLESHOOTING ·······························26
9. DISASSEMBLY PROCEDURE ··················37
10. PARTS LIST ···············································40
11. OPTIONAL PARTS·····································46
No.OC297
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Mitsubishi Electric Mr.Slim PLA-RP3AA
Summary of Contents for Mitsubishi Electric Mr.Slim PLA-RP3AA
-
Page 1: Table Of Contents
Indoor unit • Refer to the OCT04 as for control [Model names] [Service Ref.] relation.This manual does not cover outdoor units. PLA-RP3AA.UK When serving them, please refer to PLA-RP3AA the service manual No.OC294 and PLA-RP4AA.UK this manual in a set. -
Page 2: 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 followings. - Page 3 Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. 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 4: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor (Main) Unit PLA-RP3AA.UK, PLA-RP4AA.UK, PLA-RP5AA.UK, PLA-RP6AA.UK Filter Removes dust and pollutants from intake air Horizontal Air Outlet Sets airflow of horizontal automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. -
Page 5: Operation Lamp
Display In this display example on the bot- CENTRALLY CLOCK display tom left, a condition where all dis- CONTROLLED display play lamps light is shown for expla- The current time , start time and stop time can be displayed in ten second nation purposes although this differs This indicates when the unit is con- intervals by pressing the time switch... -
Page 6: Wireless Remote Controller
Wireless remote controller PLA-RP3AA.UK, PLA-RP4AA.UK, PLA-RP5AA.UK, PLA-RP6AA.UK display CHECK TEST RUN CHECK&TEST RUN display indicates that the unit is being checked or test-run. display MODEL SELECT Blinks when model is selected. display Lights up while transmission to the indoor unit is mode using switches. -
Page 7: Specifications
SPECIFICATIONS Service Ref. PLA-RP3AA.UK Item Function Cooling Heating Btu/h 24,200 27,300 Capacity 7,100 (3,300~8,100) 8,000 (3,500~10,200) Total input 1.97 2.34 Service Ref. PLA-RP3AA.UK Single phase, 50Hz, 220-230-240V Power supply (phase, cycle,voltage) Input 0.16 0.16 Running current 0.79 0.79 Starting current External finish (Panel) Munsell 0.70Y 8.59/0.97... - Page 8 Service Ref. PLA-RP4AA.UK Item Function Cooling Heating Btu/h 34,100 38,200 Capacity 10,000 (5,000~11,400) 11,200 (5,600~14,000) Total input 3.03 3.39 Service Ref. PLA-RP4AA.UK Power supply (phase, cycle,voltage) Single phase, 50Hz, 220-230-240V Input 0.25 0.25 Running current 1.25 1.25 Starting current External finish (Panel) Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil...
- Page 9 Service Ref. PLA-RP5AA.UK Item Heating Function Cooling Btu/h 42,700 47,800 Capacity 12,500 (6,000~14,000) 14,000 (6,000~16,000) Total input 3.89 4.27 Service Ref. PLA-RP5AA.UK Power supply (phase, cycle,voltage) Single phase, 50Hz, 220-230-240V Input 0.33 0.33 Running current 1.64 1.64 Starting current External finish (Panel) Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil...
- Page 10 Service Ref. PLA-RP6AA.UK Item Cooling Function Heating Btu/h 47,800 54,600 Capacity 14,000 (6,200~15,300) 16,000 (6,200~18,000) Total input 4.99 4.91 Service Ref. PLA-RP6AA.UK Power supply (phase, cycle,voltage) Single phase, 50Hz, 220-230-240V Input 0.33 0.33 Running current 1.64 1.64 Starting current External finish (Panel) Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil...
-
Page 11: Data
DATA 4-1. PERFORMANCE DATA 4-1-1. COOLING CAPACITY (1) PLA-RP3AA.UK / PUHZ-RP3VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 7,029 4,499 0.64 1.58 6,816 4,362 0.64 1.66 6,603 4,226 0.64 1.76 7,526 3,914 0.52... - Page 12 COOLING CAPACITY (2) PLA-RP3AA.UK / PUHZ-RP3VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 6,319 4,044 0.64 1.89 6,035 3,862 0.64 2.03 5,751 3,681 0.64 2.20 6,816 3,544 0.52 1.94 6,603 3,434 0.52...
- Page 13 COOLING CAPACITY (3) PLA-RP4AA.UK / PUHZ-RP4VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 9,900 6,435 0.65 2.42 9,600 6,240 0.65 2.56 9,300 6,045 0.65 2.71 10,600 5,618 0.53 2.47 10,300 5,459 0.53 2.61 9,950...
- Page 14 COOLING CAPACITY (4) PLA-RP4AA.UK / PUHZ-RP4VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 8,900 5,785 0.65 2.91 8,500 5,525 0.65 3.12 8,100 5,265 0.65 3.38 9,600 5,088 0.53 2.98 9,300 4,929 0.53 3.21 8,700...
- Page 15 COOLING CAPACITY (5) PLA-RP5AA.UK / PUHZ-RP5VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 12,375 7,920 0.64 3.11 12,000 7,680 0.64 3.29 11,625 7,440 0.64 3.48 13,250 6,890 0.52 3.17 12,875 6,695 0.52 3.35 12,438...
- Page 16 COOLING CAPACITY (6) PLA-RP5AA.UK / PUHZ-RP5VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 11,125 7,120 0.64 3.73 10,625 6,800 0.64 4.01 10,125 6,480 0.64 4.34 12,000 6,240 0.52 3.83 11,625 6,045 0.52 4.12 10,875...
- Page 17 COOLING CAPACITY (7) PLA-RP6AA.UK / PUHZ-RP6VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 13,860 8,455 0.61 3.99 13,440 8,198 0.61 4.22 13,020 7,942 0.61 4.47 14,840 7,272 0.49 4.07 14,420 7,066 0.49 4.29 13,930...
- Page 18 COOLING CAPACITY (8) PLA-RP6AA.UK / PUHZ-RP6VHA (230V) Indoor Indoor Outdoor intale air D.B.(˚C) intake air intake air D.B.(˚C) W.B.(˚C) P.C. P.C. P.C. 12,460 7,601 0.61 4.79 11,900 7,259 0.61 5.14 11,340 6,917 0.61 5.56 13,440 6,586 0.49 4.92 13,020 6,380 0.49 5.29 12,180...
- Page 19 P.C. P.C. P.C. P.C. P.C. P.C. D.B. (˚C) 5,080 1.38 5,520 1.52 6,160 1.76 8,080 2.11 9,120 2.34 10,160 2.53 PLA-RP3AA.UK 4,880 1.50 5,280 1.64 5,840 1.90 7,800 2.27 8,800 2.53 9,800 2.71 4,720 1.59 5,120 1.78 5,600 2.06 7,360 2.41...
- Page 20 4-2. PERFORMANCE CURVE Cooling performance curve(50Hz) Heating performance curve(50Hz) Correcting the capacity line influenced by frosting Not correcting the capacity line influenced by frosting INDOOR In some cases, heating operation cannot be conducted with the maximum D.B.(°C) frequency in the area below the slanting line. INDOOR W.B.(°C) INDOOR...
- Page 21 — The unit of pressure has been changed to Mpa based on international SI system. The conversion factor is : 1(Mpa)=10.2(kgf/f 4-4. OUTLET AIR SPEED AND COVERAGE RANGE PLA-RP3AA.UK PLA-RP4AA.UK PLA-RP5AA.UK PLA-RP6AA.UK Air flow /min. Air speed m/sec. Coverage range w The air coverage range is the value up to the position where the air speed is 0.25m/sec.
- Page 22 4-5. NOISE CRITERION CURVES NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE PLA-RP3AA.UK PLA-RP4AA.UK 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...
-
Page 23: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLA-RP3AA.UK Unit : mm PLA-RP4AA.UK PLA-RP5AA.UK PLA-RP6AA.UK Ceiling hole 20 - 45 860 - 910 20 - 45 Branch duct hole Fresh air intake (Cut out hole) Suspension bolt pitch 90 100 100 90 Branch duct hole... -
Page 24: Wiring Diagram
WIRING DIAGRAM PLA-RP3AA.UK, PLA-RP4AA.UK, PLA-RP5AA.UK, PLA-RP6AA.UK [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR POWER BOARD VANE MOTOR WIRELESS REMOTE CONTROLLER BOARD FUSE (4A) DRAIN-UP MACHINE RECEIVING UNIT BUZZER VARISTOR DRAIN SENSOR LED (RUN INDICATOR) INDOOR CONTROLLER BOARD DEW PREVENTION HEATER... -
Page 25: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLA-RP3AA.UK PLA-RP4AA.UK PLA-RP5AA.UK PLA-RP6AA.UK Unit : mm(inch) 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) Distributor Thermistor TH2 with strainer(#50) -
Page 26: Troubleshooting
TROUBLESHOOTING 8-1. 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 and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are sum- marized in the table below. -
Page 27: Self-Diagnosis Action Table
8-2. SELF-DIAGNOSIS ACTION TABLE Note: Refer to the manual of outdoor unit for the details of display such as F, U, and other E. Error Code Meaning of error code and detection method Judgment and action Case Abnormality of room temperature ther- 1 Defective thermistor character- 1–3 Check resistance value of thermistor. - Page 28 Error Code Meaning of error code and detection method Judgment and action Case Freezing/overheating protection is (Cooling or drying mode) (Cooling or drying mode) 1 Clogged filter (reduced airflow) working 1 Check clogs of the filter. 1 Freezing protection (Cooling mode) 2 Short cycle of air path 2 Remove shields.
- Page 29 Error Code Meaning of error code and detection method Judgment and action Case Abnormality of pipe temperature ther- 1 Defective thermistor character- 1–3 Check resistance value of thermistor. mistor / Condenser-Evaporator (TH5) istics For characteristics, refer to (P1) above. 1 The unit is in three-minute resume pro- 2 Check contact failure of connector 2 Contact failure of connector Put the power on and check restart after...
-
Page 30: Troubleshooting By Inferior Phenomena
8-3. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Factor Countermeasure (1)LED2 on indoor control p.c. • When LED1 on indoor control p.c. board is also off. 1 Power supply of 220~240V is not supplied to outdoor 1 Check the voltage of outdoor power sup- board is off. -
Page 31: Emergency Operation
8-4. EMERGENCY OPERATION 8-4-1. 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 32 8-5. TEST POINT DIAGRAM 8-5-1. Power board PLA-RP3AA.UK PLA-RP4AA.UK PLA-RP5AA.UK CN2S PLA-RP6AA.UK Connect to the Indoor controller board (CN2D) (DC12.6~15.4V) CN02 Connect to the Indoor controller board (CN03) 1 and 2 DC 0~24V Between (Indoor/Outdoor transmission) Between 2 and 3...
- Page 33 8-5-2. Controller board PLA-RP3AA.UK PLA-RP4AA.UK PLA-RP5AA.UK PLA-RP6AA.UK CN90 Connect to the wireless CN2D CN22 CN6V CN32 remote controller Connect to the indoor Remote controller con- Vane motor output Remote ON/OFF power board (CN2S) necting line board/remote operation (12 pulse) adaptor adaptor DC12.6~15.4V...
- Page 34 8-6. FUNCTIONS OF JUMPER WIRE Each function is controlled by the jumper wire on control p.c. board. For service parts, J11- J15 and J21-J24, DIP switches (SW1 and SW2) are equipped with jumper wire. (Marks in the table below) Jumper wire ( : Short : Open) DIP switch...
- Page 35 8-7. HOW TO CHECK THE PARTS PLA-RP3AA.UK PLA-RP4AA.UK PLA-RP5AA.UK PLA-RP6AA.UK Parts name Check points Room temperature Disconnect the connector then measure the resistance using a tester. thermistor (TH1) (Surrounding temperature 10:~30:) Pipe temperature Normal Abnormal thermistor (TH2) (Refer to the thermistor) 4.3k"~9.6k"...
- Page 36 <Thermistor Characteristic graph> Room temperature thermistor(TH1) Thermistor for < Thermistor for lower temperature > Pipe temperature thermistor(TH2) lower temperature Condenser/evaporator temperature thermistor(TH5) Thermistor R =15k' ± 3% Fixed number of B=3480k' ± 2% Rt=15exp { 3480( 273+t 15k' 9.6k' 6.3k' 5.2k' 4.3k' 3.0k'...
-
Page 37: Disassembly Procedure
DISASSEMBLY PROCEDURE PLA-RP3AA.UK, PLA-RP4AA.UK Be careful on removing heavy parts. PLA-RP5AA.UK, PLA-RP6AA.UK 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 open the air intake grille. - Page 38 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 5. Remove the fan motor Photo 4 (1) Remove the fan guard.(See photo 1) Fan motor (2) Remove the bell mouth.(See photo 2) (3) Remove the electrical box.(See photo 3) (4) Remove the turbo fan nut. (5) Pull out the turbo fan.
- Page 39 PHOTOS & ILLUSTRATIONS OPERATING PROCEDURE 9. Removing the drain pump and drain sensor Photo 8 (1) Remove the panel. (See photo 6) (2) Remove the fan guard. (See photo 1) (3) Remove the bell mouth. (See photo 2) (4) Remove the electrical box. (See photo 3) (5) Remove the drain pan.
-
Page 40: Parts List
PARTS LIST PANEL PARTS GEAR PLA-RP3AA.UK PLA-RP4AA.UK GEAR PLA-RP5AA.UK (VANE) PLA-RP6AA.UK VANE BUSH STEPPING MOTOR RECEIVER CHECK TEST RUN MODEL SELECT ˚C AMPM AMPM NOT AVAILABLE CENTRALLY CONTROLLED 1Hr. ON/OFF TEMP ON OFF ˚C CHECK CLOCK FILTER CHECK MODE ˚C... - Page 41 FUNCTIONAL PARTS PLA-RP3AA.UK PLA-RP4AA.UK MOTOR CAP SPL WASHER CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR FLARE NUT Q'ty / set Remarks Price Wiring Recom- Specifi- Parts No. Parts Name (Drawing PLA-RP3 PLA-RP4 Diagram mended cation Symbol Q'ty No.) Unit Amount AA.UK...
- Page 42 FUNCTIONAL PARTS PLA-RP5AA.UK PLA-RP6AA.UK MOTOR CAP SPL WASHER CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR FLARE NUT Q'ty / set Remarks Price Wiring Recom- Specifi- Parts No. Parts Name (Drawing PLA-RP5 PLA-RP6 Diagram mended cation Symbol Q'ty Unit Amount No.) AA.UK AA.UK S70 003 687...
- Page 43 FUNCTIONAL PARTS PLA-RP3AA.UK PLA-RP4AA.UK DRAIN PLUG DRAIN PLUG CAPACITOR TERMINAL BLOCK TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR Part numbers that is circled is not shown in the figure. Price Q'ty / set Remarks Wiring Recom- Specifi- Parts No. Parts Name (Drawing...
- Page 44 FUNCTIONAL PARTS PLA-RP5AA.UK PLA-RP6AA.UK DRAIN PLUG DRAIN PLUG CAPACITOR TERMINAL BLOCK TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR Part numbers that is circled is not shown in the figure. Q'ty / set Price Remarks Wiring Recom- Specifi- PLA-RP5 PLA-RP6 (Drawing Parts No. Parts Name Diagram mended...
-
Page 45: Optional Parts
OPTIONAL PARTS 11-1. TIMER Part No. PAC-SC32PTA (with set back function) Model Name Program timer 11-1-1. Program timer specifications Part name Program timer Parts No. PAC-SC32PTA Exterior dimensions (inch) 5-4/32 4-23/32 23/32 (130 120 18mm) Installation Wall mount Type of clock Quartz Clock accuracy 50 second / month at 25:... -
Page 46: Names And Functions
11-1-3. How to connect program timer (1) Install the program timer next to the remote controller the same way as the remote controller is installed. (2) Connect the program timer and the remote controller with a 5-wire cable as shown in the figure below Connect to indoor unit NOTE:While the program timer is connected to the remote controller, the with 2-wire cable. - Page 47 11-2. MULTI-FUNCTIONAL CASEMENT Part No. PAC-SG03TM-E Applied Service Ref. PLA-RP3,4,5,6AA.UK 11-3. HIGH-EFFICIENCY FILTER ELEMENT (2. MULTI-FUNCTIONAL CASEMENT is needed.) Part No. PAC-SG01KF Applied Service Ref. PLA-RP3,4,5,6AA.UK 11-4. GRILLE + WIRELESS REMOTE CONTROLLER Part No. PLP-6AALM Applied Service Ref. PLA-RP3,4,5,6AA.UK 11-5. GRILLE + WIRED REMOTE CONTROLLER Part No.
- Page 48 HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3 MARUNOUCHI CHIYODA-KU , TOKYO 100-8310 , JAPAN cCopyright 2003 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. New publication, effective Jun. 2003. Distributed in Jun. 2003 No. OC297 Specifications subject to change without notice Made in Japan...