Gebruiksaanwijzing /service van het product PLA-A12BA PLA-A12BA1 PLA-A18BA PLA-A18BA1 PLA-A24BA PLA-A24BA1 PLA-A30BA PLA-A30BA1 van de fabrikant Mitsubishi Electronics
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SER VICE MANUAL SPLIT -TYPE, HEA T PUMP AIR CONDITIONERS SPLIT -TYPE, AIR CONDITIONERS 3 3 2 2 3 CONTENTS 1 . TECHNICAL CHANGES .......................... 2 2 . REFERENCE MANUAL ........................... 2 3. SAFETY PRECAUTION ......................
2 2 REFERENCE MANUAL Ser vice Ref . PUZ-A18/24/30/36/42NHA PUZ-A18/24/30/36/42NHA-BS PUY -A12/18/24/30/36/42NHA (1) PUY -A12/18/24/30/36/42NHA (1) -BS Ser vice Manual No . OC367 PUZ-HA36NHA OCH426 OCB426 2-1. OUTDOOR UNIT SERVICE MANUAL Series (Outdoor unit) PUZ-A·NHA(-BS) PUY -A·NHA(-BS) Data Book No .
3 SAFETY PRECAUTION 3 Cautions for units utilising refrigerant R410A 3-2. CAUTIONS RELA TED TO NEW REFRIGERANT Use new refrigerant pipes. Make sure that the inside and outside of refrige- rant piping is clean and it has no contamination such as sulfur hazar dous for use, oxides, dir t, shaving particles, etc.
4 Gra vimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. T ool name Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) ·Use high-tension side pressure of 5.
5 4 P ART NAMES AND FUNCTIONS Drain pipe Filter V ane Gas pipe Liquid pipe Air outlet i-see sensor (option) Air intake (Intake grille).
6 °F°C °F°C ERROR CODE AFTER TIMER TIME SUN MON TUE WED THU FRI SA T ON OFF Hr AFTER FIL TER FUNCTION ONL Y1Hr. WEEKL Y SIMPLE AUT O OFF P AR-21MAA ON/OFF FIL TER CHECK OPERA TION CLEAR TEST TEMP . MENU BACK D A Y MONITOR/SET CLOCK ON/OFF • • Display Section For purposes of this explanation, all parts of the display are shown as lit.
7 L Wireless remote controller ON/OFF TEMP FA N V ANE TEST RUN AUTO ST OP AUTO ST ART h min LOUVER MODE CHECK RESET SET CLOCK MODEL SELECT NOT A V AILABLE SWING CHECK FA N TEST RUN °F °C AMPM STOP ST ART AMPM COOL DRY AUTO FA N HEA T V ANE CONTROL button Changes the air flow direction.
8 Service Ref. P ower supply (phase , cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger F an F an (drive) % No .
9 UNIT : 840 (33-1/16) P ANEL : 950 (37-3/8) UNIT : 840 (33-1/16) P ANEL : 950 (37-3/8) UNIT : 298 (11-3/4) P ANEL : 35 (1-3/8) UNIT : 25 (55) P ANEL : 6 (13) PLA-A36BA, PLA-A36BA 1 Single phase,60Hz, 208/230V 15 2 Munsell 6.4Y 8.9/0.4 Plate fin coil T urbo fan (direct) % 1 0.
10 6 NOISE CRITERION CUR VES PLA-A12B A PLA-A12B A 1 PLA-A18B A PLA-A18B A 1 NO TCH SPL(dB) LINE High 31 Medium1 29 Medium2 28 Low 27 NO TCH SPL(dB) LINE High 32 Medium1 31 Medium2 29 Low 28 90 80 70 .
11 PLA-A36B A PLA-A36B A 1 PLA-A42B A PLA-A42B A 1 NO TCH SPL(dB) LINE High 40 Medium1 37 Medium2 34 Low 32 NO TCH SPL(dB) LINE High 41 Medium1 39 Medium2 36 Low 34 90 80 70 60 50 40 30 20 10 63 125 2.
12 INDOOR UNIT PLA-A12BA PLA-A18BA PLA-A24BA PLA-A30BA PLA-A36BA PLA-A42BA PLA-A12BA 1 PLA-A18BA 1 PLA-A24BA 1 PLA-A30BA 1 PLA-A36BA 1 PLA-A42BA 1 7 OUTLINES AND DIMENSIONS Unit : inch(mm) 14-27/32 11-3/16 2-3/8 +5 0 (7.5) +35 -5 (160) (500) (950) Floor Min.
13 8 WIRING DIAGRAM INDOOR UNIT PLA-A12BA PLA-A18BA PLA-A24BA PLA-A30BA PLA-A36BA PLA-A42BA <Table 2> SW2 (CAPACITY CODE) Service PLA-A30BA PLA-A36BA PLA-A42BA PLA-A12BA PLA-A18BA PLA-A24BA MODE.
14 INDOOR UNIT PLA-A12BA 1 PLA-A18BA 1 PLA-A24BA 1 PLA-A30BA 1 PLA-A36BA 1 PLA-A42BA 1 <T able 2>SW2(CAPACITY CODE) Service PLA-A30BA PLA-A36BA PLA-A42BA PLA-A12BA PLA-A18BA PLA-A24BA MODELS SW2.
15 Thermistor TH2 Pipe temperature (Liquid) Distributor with strainer (#50) Thermistor TH5 (Cond./ Eva. temperature) Thermistor TH1 (Room temperature) Refrigerant flow in cooling Refrigerant flow in h.
16 10 TROUBLESHOOTING Unit conditions at ser vice Error code Actions to be taken f or ser vice (summar y) The trouble is reoccurring. Displa yed Not displa yed Judge what is wrong and tak e a corrective action according to “SELF-DIAGNOSIS A CTION T ABLE” (10-3).
17 [Procedure] 1. Press the CHECK button twice. 2. Press the temperature buttons. 3. Point the remote controller at the sensor on the indoor unit and press the HOUR button. 4. Point the remote controller at the sensor on the indoor unit and press the ON/OFF button.
18 [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 star t signal was receiv ed and the OPERA TION INDICA T OR lamp does not come on, there are no error records.
19 • If the unit cannot be operated properly after the test run, refer to the f ollowing table to find out the cause . Symptom Cause Wired remote controller LED 1, 2 (PCB in outdoor unit) On the wireless remote controller with condition abov e, f ollowing phenomena take place .
20 10-3. SELF-DIAGNOSIS ACTION T ABLE Note: Refer to the manual of outdoor unit for the details of display such as F , U, and other E. Error Code Abnormal point and detection method Cause Countermeasure P1 Room temperature thermistor (TH1) The unit is in 3-minute resume prevention mode if short/open of thermistor is detected.
21 Error Code Abnormal point and detection method Cause Countermeasure P6 Freezing/overheating protection is work- ing Freezing protection (Cooling mode) The unit is in 6-minute resume prevention .
22 Error Code Abnormal point and detection method Cause Countermeasure P9 Pipe temperature thermistor / Condenser-Evaporator (TH5) The unit is in 3-minute resume protec- tion mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within 3 minutes.
23 E6 Contact failure, short circuit or , miswiring (converse wiring) of indoor/outdoor unit connecting wire Defective transmitting receiving circuit of indoor controller board Defective transmitting receiving circuit of indoor controller board Noise has entered into indoor/ outdoor unit connecting wire.
24 (For the separate indoor/outdoor unit power sup- ply system) Power supply of 208/230V AC is not supplied to indoor unit. The connectors of the optional replacement kit are not used.
25 Note: Refer to the manual of outdoor unit for the detail of remote controller . (3)Upward/downward vane performance failure The vane is not downward during defrosting and heat preparation and when the thermostat is OFF in HEA T mode. (Working of COOL protection function) V ane motor does not rotate.
26 10-5. EMERGENCY OPERA TION 10-5-1. When wireless remote controller troubles or its battery is exhausted 10-5-2. When wired remote controller or indoor unit microcomputer troubles When the remote co.
27 10-6. HOW TO CHECK THE P ARTS PLA-A12BA PLA-A18BA PLA-A24BA PLA-A30BA PLA-A36BA PLA-A42BA PLA-A12BA 1 PLA-A18BA 1 PLA-A24BA 1 PLA-A30BA 1 PLA-A36BA 1 PLA-A42BA 1 P ar ts name Check points Disconnect the connector then measure the resistance with a tester .
28 <Thermistor Characteristic graph> Room temperature thermistor(TH1) Pipe temperature thermistor/liquid(TH2) Condenser/evaporator temperature thermistor(TH5) Thermistor R 0 =15k ± 3% Fi.
29 10-7.TEST POINT DIAGRAM Indoor controller board PLA-A12BA PLA-A18BA PLA-A24BA PLA-A30BA PLA-A36BA PLA-A42BA PLA-A12BA 1 PLA-A18BA 1 PLA-A24BA 1 PLA-A30BA 1 PLA-A36BA 1 PLA-A42BA 1 CN3C T ransmissio.
30 SW1 Setting by the dip s witch and jumper wire Functions Jumper wire Model settings Capacity settings P air number setting with wireless remote controller Remarks SW2 J41 J42 Unit type setting JP1 .
31 31 11 SPECIAL FUNCTION Operation pattern OC-1 OC-2 IC-1 IC-2 3(2) 3(2) 2 RC 2 Main unit Sub unit Refrigerant address "01" Refrigerant address "00" Fig 1 [Back-up function on.
32 32 (1) Request Code List Rotation setting Initial setting Initial setting 2nd stage cut-in setting Setting contents Setting No. (Request code) No.7 (316) No.8 (317) No.9 (318) Rotation and Back-up OFF (Normal group control operation) Monitoring the request code of current setting.
33 33 (2) Setting method of each function by wired remote controller B: Refrigerant address C: Data display area D: Request code display area TEST CHECK FIL TER FIL TER ON/OFF 1. Stop running the air-conditioner( ). 2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen (at ).
34 11 DISASSEMBL Y PROCEDURE OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 1. Removing the air intake grille (1) Slide the knob of air intake grille toward the arrow to open the air intake grille. (2) Remove drop prevention hook from the panel.
35 OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 8. Removing the pipe temperature thermistor (TH2) and condenser evaporator temperature thermistor (TH5) (1) Remove the drain pan. (See photo 6) (2) Remove the turbo fan. (See photo 3) (3) Remove the 2 wiring clamps.
OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 9. Removing the drain pump (DP) and float switch (FS) (1) Remove the drain pan. (See photo 6) (2) Cut the hose band and remove the hose. (3) Remove the drain pump assembly (3 screws and 2 hooks). (4) Remove the drain pump (3 screws).
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