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Mitsumi electronic PKA-A12HA4 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    SER VICE MANUAL SPLIT -TYPE, HEA T PUMP AIR CONDITIONERS SPLIT -TYPE, AIR CONDITIONERS NOTE: • This manual describes only service data of the indoor units. • RoHS compliant products have <G> mark on the spec name plate. CONTENTS 1. REFERENCE MANUAL ................................... 2 2. SAFETY PRECAUTION ................................[...]

  • Page 2

    2 1 REFERENCE MANUAL 1-1. OUTDOOR UNIT SERVICE MANUAL Service Ref. Service Manual No. PUZ-A18/24/36NHA4 PUZ-A18/24/36NHA4-BS PUY -A12/18/24/36NHA4 PUY -A12/18/24/36NHA4-BS OCH481 OCB481 Radio frequency interface Wired remote controller IR wireless remote controller ON/OFF TEMP. COOL DRY AUTO FAN HEAT RF thermostat Remote controller (Optional parts)[...]

  • Page 3

    3 SAFETY PRECAUTION 2 Cautions for units utilising refrigerant R410A 2-2. CAUTIONS RELA TED TO NEW REFRIGERANT Use new refrigerant pipes. Store the piping to be used indoors during installation, and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) Charge refrigerant from liquid phase of g[...]

  • Page 4

    4 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. 3 P ART NAMES AND FUNCTIONS Indoor unit Filter Air intake Louver Air outlet V ane No. T ool name Specifications 1 Gauge manifold · Only for R410A · Use the existing fitting specifications . (UNF1/2) · Use high-tension side pressure of 5.3MPa[...]

  • Page 5

    5 ● Wired remote controller (Option) °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[...]

  • Page 6

    6 ● IR wireless remote controller (Option) ON/OFF TEMP FA N VA N E TEST RUN AUTO ST OP AUTO ST ART h min LOUVER MODE CHECK RESET SET CLOCK MODEL SELECT NOT A VAILABLE 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. CLOCK button RESET button SET button ON/OFF but[...]

  • Page 7

    7 SPECIFICA TIONS 4 A A kW F.L.A m 3 /min(CFM) Pa(mmAq) dB mm(in.) mm(in.) mm(in.) mm(in.) kg(lbs) Service Ref. Power supply(phase, cycle, voltage) Max. Fuse Size Min.Circuit Ampacity External finish Heat exchanger Fan Fan(drive) % No. Fan motor output Fan motor Airflow(Low-Middle-High) External static pressure Operation control & Thermostat No[...]

  • Page 8

    8 5 NOISE CRITERION CUR VES 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMA TE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB (0dB=0.0002 μ bar) BAND CENTER FREQUENCIES, Hz PKA-A12HA4 PKA-A18HA4 High NOTCH Low 43 SPL(dB) 36 LINE UNIT WA L L 3.3ft 3.3ft MI[...]

  • Page 9

    9 OUTLINES AND DIMENSIONS 6 PKA-A12HA4 PKA-A18HA4 Unit: inch (mm) 1/2F ( : 12.7) 1/4F ( : 6.35) Refrigerant Piping Drain hose Gas pipe Liquid pipe : 2-1/2~ : 3-1/8 ( : 65~ : 80) : 2-1/2~ : 3-1/8 ( : 65~ : 80) Through hole Sleeve (purchased locally) Center measurement hole : 3/32( : 2.5) 5/32(3.8) 2-1/4(58) 0 Wall hole for left rear piping Knock out[...]

  • Page 10

    10 WIRING DIAGRAM 7 PKA-A12HA4 PKA-A18HA4 The black square ( ■ ) indicates a switch position. Notes: 1. SymboIs used in wiring diagram above are, : Connector, : Terminal (block). 2. Indoor and outdoor connecting wires have poIarities, make sure to match terminal numbers (S1, S2, S3) for correct wirings. 3. Since the outdoor side electric wiring m[...]

  • Page 11

    11 REFRIGERANT SYSTEM DIAGRAM 8 Thermistor TH2 Pipe temperature(Liquid) Distributor with strainer (#50/#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 LIQUID pipe con[...]

  • Page 12

    12 TROUBLESHOOTING 9 <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 [...]

  • Page 13

    13 13 [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. ON/OFF TEMP FA N VA N E MODE CHECK LOUVER TEST RUN A UTO ST OP AU TO S T A RT h m[...]

  • Page 14

    14 [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 w as received and the OPERA TION INDICA T OR lamp does not come on, there are no error records. *2 If the beeper sounds 3 times continuously “beep , beep , beep (0.4 + 0[...]

  • Page 15

    15 • 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 IR wireless remote controller with condition abov e, f ollowing phenomena take place . • No signals from the remote controller can be received. • OPE[...]

  • Page 16

    16 9-3. SELF-DIAGNOSIS ACTION T ABLE Note: Refer to the manual of outdoor unit for the details of display su ch as F , U , a nd ot he r 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. Abnormal if the u[...]

  • Page 17

    17 Error Code Abnormal point and detection method Cause Countermeasure P6 Freezing/overheating protection is operating Freezing protection (Cooling mode) The unit is in 6-minute resume prevention mode if pipe <liquid or condenser/evapo- rator> temperature stays under the compressor started. Abnormal if it again within 16 minutes after 6-minut[...]

  • Page 18

    18 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. (The unit returns to normal operation, if it has been reset nor[...]

  • Page 19

    19 E6 Contact failure, short circuit or , miswiring (converse wiring) of indoor/outdoor unit connecting wire Defective transmitting receiving circuit of outdoor controller circuit bo ar d. Defective transmitting receiving circuit of indoor controller board Noise has entered into indoor/ outdoor unit connecting wire. Check LED display on the outdoor[...]

  • Page 20

    20 Note: Refer to the manual of outdoor unit for the detail of remote co nt ro l le r . (1)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. • Defective vane motor • Breaking of [...]

  • Page 21

    21 9-5. EMERGENCY OPERA TION 9-5-1. When IR wireless remote controller fails or its battery is exhausted 9-5-2. When wired remote controller or indoor unit microprocessor fails When the remote controller cannot be used  DEFROST/ST AND BY lamp (ORANGE)  Operation lamp (GREEN)  Emergency operation switch (cooling/heating)  Receiver [Heat [...]

  • Page 22

    22 9-6. HOW TO CHECK THE P ARTS Parts name Check points V ane motor (MV) Measure the resistance between the terminals with a tester . (Coil temperature 77 " F ) Normal 350  ± 7% Abnormal  -  Brown-Red  -  Brown-Orange  -  Brown-Y ellow  -  Brown-Green Open or short Fan motor (MF)  Red  Y ellow  Brown Orange[...]

  • Page 23

    23 9-6-2. DC Fan motor (fan motor/indoor controller circuit board) Notes · High voltage is applied to the connecter (CNMF) for the fan motor . Pay attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit board and fan motor .) Self check Symptom : [...]

  • Page 24

    24 9-7. TEST POINT DIAGRAM Indoor controller board PKA-A12HA4 PKA-A18HA4 { CN51 Centrally control 1 - 2 : Control signal 13VDC pulse input ( 1 : +) 3 - 4 : Operation indicator 13VDC ( 3 : +) 3 - 5 : Malfunction indicator 13VDC ( 3 : +) CN44 Pipe temperature thermistor 1 - 2 : Liquid (TH2) 3 - 4 : Condenser/Evaporator (TH5) CN20 Room temp. thermisto[...]

  • Page 25

    25 SW1 Setting by the dip switch and jumper wire Functions Jumper wire Model settings Capacity settings Pair number setting with IR wireless remote controller Remarks SW2 J41 J42 Indoor controller board type setting JP3 0 1 2 3 ~ 9 Wireless remote controller setting Control PCB setting J41 J42 <Initial setting> IR wireless remote controller: [...]

  • Page 26

    26 10 SPECIAL FUNCTION Note: · When the uint is restarted to operate after turning off the power or OFF operation, the unit which was operating will start oper- ation. · T o operate the main unit, refer to the 10-1-2. and set the request code No. which is not the same as the current one, and set again the former request code No. (2) 2nd stage cut[...]

  • Page 27

    27 27 System constraint · This function is available only in cooling mode. Ex.) Set temp. by R/C = 20 : (68°F) Set point = 26 : (79°F) When request code number is “323”. 26 : 2nd unit Cut-in 4 degree C 22 : 2nd unit Cut-out 20 : 10-1-2. How to set rotation function (Back-up function, 2nd stage cut-in function) Y ou can set these functions by[...]

  • Page 28

    28 (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 operation(  ). 2. Press the button (  ) for 3 seconds so that [Maintenance mode] appears on the screen (  ). After a while, [00] appear[...]

  • Page 29

    29 DISASSEMBL Y PROCEDURE 11 Be careful when removing heavy parts. Push Push Down Be careful not to damage the airflow adjustment plate with the screw driver . Corner hole 1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INST ALLA TION PLA TE (1) Remove the front panel. (2) Insert the screw driver to the corner hole at both left and right sid[...]

  • Page 30

    30 4. REMOVING THE ELECTRICAL BOX (1) Remove the front panel. (Refer to step 2) (2) Remove the electrical box covers. (See Photo 3) (3) Remove the nozzle assembly . (Refer to step 5) (4) Disconnect the connecting wire from terminal block (TB4) and terminal block for MA-remote controller (TB5). (5) Disconnect the connectors on the indoor controller [...]

  • Page 31

    31 5. REMOVING THE NOZZLE ASSEMBL Y (with V ANE and V ANE MOT OR) AND DRAIN HOSE (1) Remove the front panel (Refer to step 2). (2) Remove the electrical box cover . (3) Disconnect the vane motor connector (CN151) on the indoor controller board. (4) Remove the corner box. (5) Pull the nozzle assembly and detach. (6) Push the fixture and remove the d[...]

  • Page 32

    32 8. REMOVING THE LIQUID PIPE THERMISTOR AND COND/EV A TEMP . THERMIST OR (1) Remove the front panel. (Refer to step 2) (2) Remove the electrical box cover . (3) Remove the motor band. (4) Cut the wiring fixed band. (5) Remove the liquid pipe thermistor and cond/eva temp. ther- mistor . (6) Disconnect the connector (CN44) on the indoor controller [...]

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  • Page 36

    HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN C Copyright 2010 MITSUBISHI ELECTRIC ENGINEERING CO., L TD. Distributed in Nov . 2010 No.OCH483 Made in Japan New publication, effective Nov . 2010 Specifications subject to change without notice TM[...]