Page 2 - • Indoor controller board has been changed.
2 1 TECHNICAL CHANGES 2 REFERENCE MANUAL Service Ref. PUZ-A18/24/30/36/42NHAPUZ-A18/24/30/36/42NHA-BSPUY-A12/18/24/30/36/42NHA (1) PUY-A12/18/24/30/36/42NHA (1) -BS Service Manual No. OC367 2-1. OUTDOOR UNIT SERVICE MANUAL Series (Outdoor unit) PUZ-A·NHA(-BS)PUY-A·NHA(-BS) Manual No. OCS04 2-2. TECH...
Page 3 - SAFETY PRECAUTION; Cautions for units utilising refrigerant R410A; Use new refrigerant pipes.; Be sure to use a filter drier for new refrigerant.
3 SAFETY PRECAUTION 3 Cautions for units utilising refrigerant R410A 3-2. CAUTIONS RELATED TO NEW REFRIGERANT Use new refrigerant pipes. Make sure that the inside and outside of refrige-rant piping is clean and it has no contaminationsuch as sulfur hazardous for use, oxides, dirt, shaving particles,...
Page 4 - Specifications
4 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. Specifications 1 Gauge manifold ·Only for R410A ·Use the existing fitting specifications. (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. 2 Charge hose ·Only for R410A ·Use pre...
Page 5 - PART NAMES AND FUNCTIONS; Grille; Indoor Unit; Operation Section
5 PART NAMES AND FUNCTIONS 4 Auto Air Swing VaneDisperses airflow up anddown and adjusts the angleof airflow direction. Grille FilterRemoves dust and pollutantsfrom intake air. Horizontal Air OutletSets horizontal airflow automaticallyduring cooling or dehumidifying. Air IntakeIntakes air from room....
Page 6 - Wired remote controller; ̊F ̊C; Display Section
6 ● Wired remote controller ● ● ˚F˚C ˚F˚C ERROR CODE AFTER TIMER TIME SUN MON TUE WED THU FRI SAT ON OFF Hr AFTER FILTER FUNCTION ONLY1Hr. WEEKLY SIMPLE AUTO OFF Note: “PLEASE WAIT” messageThis message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the uni...
Page 7 - Wireless remote controller
7 ON/OFF TEMP FAN VANE TEST RUN AUTO STOP AUTO START h min LOUVER MODE CHECK RESET SET CLOCK MODEL SELECT NOT AVAILABLE SWING CHECK FAN TEST RUN ˚F ˚C AMPM STOP START AMPM COOL DRY AUTO FAN HEAT VANE CONTROL button Changes the air flow direction. CLOCK button RESET button SET button ON/OFF button Th...
Page 8 - SPECIFICATIONS
8 Single phase,60Hz, 208/230V 15 1 Munsell 0.70Y 8.59/0.97 Plate fin coil Turbo fan (direct) o 1 0.070 0.79 Dry: 15-16-18-20(530-570-640-710) Wet:14-15-17-19(490-530-600-670) 0(direct blow) – Remote controller & built-in 28-30-32-34 32 (1-1/4) PLA-A18AA/ PLA-A18AA 1 UNIT : 840 (33-1/16) PANEL : ...
Page 10 - NOISE CRITERION CURVES; UNIT
10 6 NOISE CRITERION CURVES PLA-A12AAPLA-A12AA 1 NOTCH SPL(dB) LINE High Medium1 Medium2 Low 31 29 28 27 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB (0 dB = ...
Page 11 - OUTLINES AND DIMENSIONS
PLA-A12AA 1 PLA-A18AA 1 PLA-A24AA 1 PLA-A30AA 1 PLA-A36AA 1 PLA-A42AA 1 11 INDOOR UNITPLA-A12AA PLA-A18AA PLA-A24AA PLA-A30AA PLA-A36AA PLA-A42AA 7 OUTLINES AND DIMENSIONS Unit : inch(mm) 1-1/2(37) 14-23/32(374) 11/16 (17 ) 2-3/8(60) 11-1/4(286) 1-31/32~2-3/4 4-1/8(105) B A 7-15/32(190) D 3-5/16 (84...
Page 12 - WIRING DIAGRAM
12 8 WIRING DIAGRAM I.B SWE ONOFF SW2 SW1 Refer to tables 1 and 2 for service PCB. HEATERCN24 (YLW) D.SENSORCN31 (WHT) 1 2 3 INTAKE CN20 (RED) 1 2 LIQUID CN21 (WHT) PIPE CN29 (BLK) 1 2 1 2 REMOCON CN22 (BLU) 1 2 TH5 TH1 DS TH2 2 1 TB5 R.B TB6 1 2 TRANSMISSION WIRES DC12V LED3 LED2 LED1 CN41 CN2L CN5...
Page 13 - Heat exchanger; REFRIGERANT SYSTEM DIAGRAM
13 Thermistor TH2Pipe temperature (Liquid) Distributorwith strainer (#50) Thermistor TH5(Cond./ Eva. temperature) Thermistor TH1(Room temperature) Refrigerant flow in cooling Refrigerant flow in heating Strainer (#50) Strainer (#50) Heat exchanger Refrigerant GAS pipe connection(Flare) Refrigerant L...
Page 14 - TROUBLESHOOTING
14 10 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 inferior phenomenon reoccur...
Page 15 - Malfunction-diagnosis method at maintenance service>
15 [Procedure] 1. Press the CHECK button twice. 2. Press the temperature buttons. 3. Point the remote controller at the sensor on the indoor unit andpress the HOUR button. 4. Point the remote controller at the sensor on the indoor unit andpress the ON/OFF button. • "CHECK" lights, and refrig...
Page 16 - [Output pattern A] Errors detected by indoor unit
16 [Output pattern A] Errors detected by indoor unit [Output pattern B] E9 *1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records. *2 If the beeper sounds 3 time...
Page 22 - 0-4. TROUBLESHOOTING BY INFERIOR PHENOMENA; Phenomena
22 (For the separate indoor/outdoor unit power sup- ply system) 1 Power supply of 208/230V AC is not supplied to indoor unit. 2 The connectors of the optional replacement kit are not used. 3 Defective indoor controller board 4 Defective indoor power board 10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA ...
Page 26 - Thermistor R
26 0 10 20 30 40 50 -20 -10 0 10 20 30 40 50 -4 -14 32 50 68 86 104 122 : ° F Temperature Resistance (k " ) <Thermistor for lower temperature> <Thermistor Characteristic graph> Room temperature thermistor(TH1)Pipe temperature thermistor/liquid(TH2)Condenser/evaporator temperaturether...
Page 29 - 0-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE
29 SW1 Setting by the dip switch and jumper wire Functions Jumper wire Modelsettings Capacitysettings Pair numbersetting withwireless remotecontroller Remarks SW2 J41J42 Unit type setting JP1 Indoor controller board type setting JP3 012 3 ~ 9 Wireless remote controller setting Control PCB setting J4...
Page 30 - DISASSEMBLY PROCEDURE; OPERATING PROCEDURE; Removing the air intake grille; Photo 2; Removing the room temperature thermistor; Photo 1
30 DISASSEMBLY PROCEDURE OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 1. Removing the air intake grille (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. (2) Remove the string hook from the panel to prevent the grille from dropping. (3) Slide th...
Page 31 - Removing the panel; Photo 6; Removing the fan motor; Photo 3; Removing the drain pan; Figure 2; Removing the pipe temperature thermistor
31 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 6. Removing the panel (1) Remove the air intake grille.(See figure 1)Corner panel (See figure 2)(1) Remove the corner screw.(2) Slide the corner panel to the direction of the arrow 3 , and remove the corner panel. Panel (See photo 5)(1) Disconnect th...
Page 32 - Removing the heat exchanger; Photo 7
32 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 9. Removing the heat exchanger (1) Remove the panel. (See photo 5)(2) Remove the bell mouth. (See photo 1)(3) Remove the electrical box. (See photo 2)(4) Remove the drain pan. (See photo 6)(5) Remove the turbo fan. (See photo 3)(6) Remove the 3 screw...
Page 33 - Wiring; Part number that is circled is not shown in the figure.
33 12 PARTS LIST (non-RoHS compliant) 1 10 2 3 3 4 5 9 8 7 6 3 GEAR GEAR (VANE) VANE BUSH VANE MOTOR ON/OFF CENTRALLY CONTROLLED ERROR CODE CLOCK ON OFF ˚C CHECK CHECK MODE FILTER TEST RUN FUNCTION ˚C 1Hr. NOT AVAILABLE STAND BY DEFROST TEMP. 11 PANEL PARTSPLA-A12AA PLA-A18AA PLA-A24AA PLA-A30AA PLA...
Page 34 - Parts Name; MF; SPL WASHER
34 No. Parts No. Parts Name Q'ty / set PLA-A·AA 12 18 24, 30 Wiring Diagram Symbol Recom- mended Q'ty 12 3 456789 TURBO FANSPL WASHERHEAT EXCHANGERHEAT EXCHANGERHEAT EXCHANGERPIPE TEMPERATURE THERMISTORCONDENSER / EVAPORATOR TEMPERATURE THERMISTORMOTOR CAPLEAD ASSY(F/M)FAN MOTORRUBBER MOUNT R01 E28 ...
Page 35 - CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR
35 Q'ty / set 36, 42 Specification Remarks (Drawing No.) No. Parts No. Parts Name Wiring Diagram Symbol Recom- mended Q'ty 1 2 3 4 5 6 7 8 9 TURBO FAN SPL WASHER HEAT EXCHANGER PIPE TEMPERATURE THERMISTOR CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR MOTOR CAP LEAD ASSY(F/M) FAN MOTOR RUBBER MOUNT 1...
Page 36 - Specification
36 No. Parts No. Parts Name Wiring Diagram Symbol Recom- mended Q'ty 123456789 1011121314 DRAIN PANDRAIN HOSEDRAIN PUMPDRAIN SENSORSENSOR HOLDERINDOOR POWER BOARDINDOOR CONTROLLER BOARDROOM TEMPERATURE THERMISTORTERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK CAPACITORDRAIN PLUGDRAIN PLUG 1111111111111...
Page 38 - RoHS PARTS LIST; GEAR; RoHS
38 13 RoHS PARTS LIST 1 10 2 3 3 4 5 9 8 7 6 3 GEAR GEAR (VANE) VANE BUSH VANE MOTOR ON/OFF CENTRALLY CONTROLLED ERROR CODE CLOCK ON OFF ˚C CHECK CHECK MODE FILTER TEST RUN FUNCTION ˚C 1Hr. NOT AVAILABLE STAND BY DEFROST TEMP. 11 PANEL PARTSPLA-A12AA 1 PLA-A18AA 1 PLA-A24AA 1 PLA-A30AA 1 PLA-A36AA 1...
Page 44 - TM
C Copyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jun. 2007 No.OC370 REVISED EDITION-B PDF 9Distributed in Aug. 2006 No.OC370 REVISED EDITION-A PDF 9Distributed in Feb. 2006 No.OC370 PDF 10Made in Japan New publication, effective Jun. 2007Specifications subject to change with...