SPLIT-TYPE AIR CONDITIONERS No.OC241 REVISED EDITION-B TECHNICAL & SERVICE MANUAL Series PLA Ceiling Cassettes R407C Indoor unit Revision: [Service Ref.] [Model names] • “12. PARTS LIST” has been modified. PLA-P3AA.UK • Program timer <PAC-YT32PTA> PLA-P3AA has been added in PLA-P3AA “13.
Revision: 1. “ 12. PARTS LIST ” has been modified on page 65, 66 and 67. Page Revise point Service Ref. Incorrect Correct PLA-P5AA.UK FUNCTIONAL PARTS S70 E21 480 S70 E24 480 PLA-P5AA No.7 HEAT PLA-P6AA.UK S70 E22 480 S70 E25 480 EXCHANGE PLA-P6AA PLA-P3AA.UK...
COMBINATION OF INDOOR AND OUTDOOR UNITS Outdoor unit Heat pump type Cooling only type PUH-P PU-P Indoor unit PLA-P3AA.UK — — — — — — Heat pump without electric heater PLA-P4AA.UK — — — — — — — — PLA-P5AA.UK —...
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[1] Service tools Use the below service tools as exclusive tools for R407C refrigerant. No. Tool name Specifications 1 Gauge manifold ·Only for R407C. ·Use the existing fitting SPECIFICATIONS. (UNF7/16) ·Use high-tension side pressure of 35kgf/cm or over. 2 Charge hose ·Only for R407C.
PART NAMES AND FUNCTIONS Indoor Unit PLA-P3AA.UK, PLA-P4AA.UK, PLA-P5AA.UK, PLA-P6AA.UK PLA-P3AA .UK, PLA-P4AA .UK, PLA-P5AA .UK, PLA-P6AA 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.
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Display In this display example on the bot- CENTRALLY display tom left, a condition where all dis- CONTROLLED display play lamps light is shown for expla- The current time , start time and stop nation purposes although this differs time can be displayed in ten second This indicates when the unit is con- intervals by pressing the time setting from actual operation.
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PLA-P3AA .UK, PLA-P4AA .UK, PLA-P5AA .UK, PLA-P6AA Operation buttons TEMP. ADJUSTMENT button TIME SETTING button AIR SPEED button This sets the room temperature. The This sets the current time, start time This sets the ventilation fan speed. temperature setting can be performed and stop time.
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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 nation purposes although this differs time can be displayed in ten second This indicates when the unit is con- intervals by pressing the time switch...
Wireless remote controller PLA-P3AA.UK, PLA-P4AA.UK, PLA-P5AA.UK, PLA-P6AA.UK When cover is open. ADDRESS display display display Displays the refrigerant address. SET TEMP. display indicates desired tempera- Lights up while transmission to the indoor unit ture set. UNIT NO. display is mode using switches. Displays the number of unit..
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PLA-P3AA .UK, PLA-P4AA .UK, PLA-P5AA .UK, PLA-P6AA 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. display SET TEMP.
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3. ELECTRICAL DATA 3.1. Heat pump type Indoor unit ..220V 50Hz Single phase Outdoor unit ..220V 50Hz Single phase / 380V 50Hz 3 phase PLA-P3AA.UK PLA-P4AA.UK Model Indoor unit PUH-P3VGA PUH-P3YGA PUH-P4YGA Outdoor unit Cool Heat Cool Heat Cool Heat Mode...
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Indoor unit ..220V 50Hz Single phase Outdoor unit ..380V 50Hz 3 phase PLA-P5AA.UK PLA-P6AA.UK Indoor unit Model PUH-P5YGA PUH-P6YGA Outdoor unit Cool Heat Cool Heat Mode 15,800 16,400 12,600 14,100 Capacity (W) 5.51 5.89 6.60 6.73 Total Input (kW) (In+Out) 0.28 0.28 0.32...
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Indoor unit ..220V 50Hz Single phase Outdoor unit ..220V 50Hz Single phase / 380V 50Hz 3 phase PLA-P3AA.UK PLA-P4AA.UK Indoor unit PLA-P3AA PLA-P4AA Service Ref. PUH-P GAA.UK • Outdoor unit Cool Heat Cool Heat Cool Heat Cool Heat Mode Capacity (W) 7,600...
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Indoor unit ..220V 50Hz Single phase Outdoor unit ..380V 50Hz 3 phase PLA-P5AA.UK PLA-P6AA.UK Indoor unit PLA-P5AA PLA-P6AA Service Ref. PUH-P GAA.UK • Outdoor unit Mode Cool Heat Cool Heat 12,600 14,700 14,100 16,900 Capacity (W) Total Input (kW) (In+Out) 4.96 5.30 5.85...
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3.2. Cooling only type Indoor unit ..220V 50Hz Single phase Outdoor unit ..220V 50Hz Single phase / 380V 50Hz 3 phase Indoor unit PLA-P4AA.UK PLA-P5AA.UK PLA-P6AA.UK PLA-P3AA.UK Model Outdoor unit PU-P3VGA PU-P3YGA PU-P4YGA PU-P5YGA PU-P6YGA Mode Cool Cool Cool Cool Cool...
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Indoor unit ..220V 50Hz Single phase Outdoor unit ..220V 50Hz Single phase / 380V 50Hz 3 phase PLA-P3AA.UK PLA-P4AA.UK PLA-P5AA.UK PLA-P6AA.UK Indoor unit PLA-P3AA PLA-P4AA PLA-P5AA PLA-P6AA Service Ref. PUH-P GAA.UK • Outdoor unit Cool Cool Cool Cool Cool Cool Mode...
WIRING DIAGRAM PLA-P3AA.UK, PLA-P4AA.UK, PLA-P5AA.UK, PLA-P6AA.UK PLA-P3AA .UK, PLA-P4AA .UK, PLA-P5AA .UK, PLA-P6AA w The part name of symbol “I.B” is “SPCB”. SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR POWER BOARD VANE MOTOR WIRELESS REMOTE CONTROLLER BOARD FUSE(4A) DRAIN-UP MACHINE RECEIVING UNIT VARISTOR DRAIN SENSOR...
REFRIGERANT SYSTEM DIAGRAM Unit : mm(inch) PLA-P3AA.UK / PUH-P3VGA, PUH-P3YGA Refrigerant flow in cooling <4-way valve solenoid coil> Refrigerant flow in heating Heating ON Cooling OFF Outdoor unit High pressure Refrigerant pipe 4-way valve switch Indoor unit 15.88 5/8") Thermistor Ball valve (TH6) (with heat insulator)
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Unit : mm(inch) PLA-P3AA.UK / PU-P3VGA, PUH-P3YGA Refrigerant flow in cooling Outdoor unit High pressure Refrigerant pipe switch Indoor unit 15.88 5/8") Thermistor Ball valve (TH6) (with heat insulator) Strainer Thermistor Flexible tube Service (TH1) Service Thermistor port port (TH3) Thermistor Distributor Flared...
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Unit : mm(inch) PLA-P3AA.UK, PLA-P3AA .UK / PUH-P3VGAA.UK, PUH-P3YGAA.UK Refrigerant flow in cooling <4-way valve solenoid coil> Refrigerant flow in heating Heating ON Cooling OFF Outdoor unit High pressure Refrigerant pipe 4-way valve protect switch Indoor unit 15.88 5/8") Thermistor Ball valve (TH6) (with heat insulator)
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Unit : mm(inch) PLA-P3AA.UK, PLA-P3AA .UK / PU-P3VGAA.UK, PUH-P3YGAA.UK Refrigerant flow in cooling Outdoor unit High pressure Refrigerant pipe protect switch Indoor unit 15.88 5/8") Thermistor Ball valve (TH6) (with heat insulator) Strainer Thermistor Flexible tube Service (TH1) Service Thermistor port port (TH3)
TROUBLESHOOTING HOW TO CHECK THE PARTS PLA-P3AA.UK, PLA-P4AA.UK, PLA-P5AA.UK, PLA-P6AA.UK PLA-P3AA .UK, PLA-P4AA .UK, PLA-P5AA .UK, PLA-P6AA 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...
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<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'...
DISASSEMBLY PROCEDURE PLA-P3AA.UK, PLA-P3AA Be careful on 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 open the air intake grille. Air intake grille (2) Remove drop prevention hook from the panel.
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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.
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OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 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.
PARTS LIST PANEL PARTS GEAR PLA-P3AA.UK, PLA-P4AA.UK, PLA-P5AA.UK, PLA-P6AA.UK PLA-P3AA .UK, PLA-P4AA .UK, PLA-P5AA .UK, PLA-P6AA GEAR (VANE) VANE BUSH STEPPING MOTOR RECEVER CHECK TEST RUN MODEL SELECT ˚C AMPM AMPM FILTER NOT AVAILABLE CENTRALLY CONTROLLED 1Hr. ON OFF ON/OFF TEMP CHECK MODE ˚C...
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FUNCTIONAL PARTS PLA-P3AA.UK, PLA-P4AA.UK PLA-P3AA .UK, PLA-P4AA SPL WASHER CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR Q'ty / set Price Wiring Recom- Remarks Specifi- Parts No. Parts Name PLA-P3 PLA-P4 Diagram mended (Drawing Symbol cation Q'ty Unit Amount AA.UK AA AA.UK AA No.) S70 003 687...
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FUNCTIONAL PARTS PLA-P5AA.UK, PLA-P6AA.UK PLA-P5AA .UK, PLA-P6AA SPL WASHER CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR Q'ty / set Price Wiring Recom- Remarks Specifi- Parts No. Parts Name PLA-P5 PLA-P6 Diagram mended (Drawing Symbol cation Q'ty Unit Amount AA.UK AA AA.UK AA No.) S70 003 687...
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FUNCTIONAL PARTS PLA-P3AA.UK, PLA-P4AA.UK PLA-P3AA .UK, PLA-P4AA 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 Specifi- Remarks Wiring Recom- Parts No. Parts Name PLA-P3 PLA-P4...
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FUNCTIONAL PARTS PLA-P5AA.UK, PLA-P6AA.UK PLA-P5AA .UK, PLA-P6AA 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 Specifi- Remarks Wiring Recom- Parts No. Parts Name PLA-P5 PLA-P6...
OPTIONAL PARTS 1. Program timer (PLA-P3 / 4 / 5 / 6AA.UK) Part No. PAC-SC32PTA (with set back function) Applied Service Ref. PLA-P3 / 4 / 5 / 6AA.UK 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)
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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.
2. Program timer (PLA-P3 / 4 / 5 / 6AA .UK) Part No. PAC-YT32PTA Applied Service Ref. PLA-P3 / 4 / 5 / 6AA 2-1 Names and functions <PAC-YT32PTA> MODE A MODE B M O NIT O R SET BACK SET/MONITOR MODE A/B/OFF SET BACK...
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3. Multi-Functional Casement Part No. PAC-SG03TM-E Applied Service Ref. PLA-P3/4/5/6AA.UK, PLA-P3/4/5/6AA 4. High-Efficiency Filter Element (2. Multi-Functional Casement is needed.) Part No. PAC-SG01KF Applied Service Ref. PLA-P3/4/5/6/AA.UK, PLA-P3/4/5/6AA 5. Grill + Wireless Remote Controller Part No. PLP-6AALA PLP-6AALM Applied Service Ref. PLA-P3/4/5/6/AA.UK PLA-P3/4/5/6/AA 6.
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HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3 MARUNOUCHI CHIYODA-KU , TOKYO 100-8310 , JAPAN cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Sep. 2004 No.OC241 REVISED EDITION-B PDF Distributed in Sep. 2001 No.OC241 REVISED EDITION-A 350 Reprinted in Jul. 2001 No.OC241 50 Distributed in Apr.