Mitsubishi Electric PKA-A24KA.TH - Manuals

Mitsubishi Electric PKA-A24KA.TH – Manual in PDF format online.

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Manual

Manual Mitsubishi Electric PKA-A24KA.TH

Summary

Page 2 - REFERENCE MANUAL

2 1 REFERENCE MANUAL 1-1. OUTDOOR UNIT SERVICE MANUAL Service Ref. Service Manual No. PUZ-A24/30/36NHA3PUZ-A24/30/36NHA3-BSPUY-A24/30/36NHA3PUY-A24/30/36NHA3-BS OCH458 OCB458 PUZ-HA30/36NHA2 OCH426 OCB426 1-2. TECHNICAL DATA BOOK Series (Outdoor unit) Data Book No. PUZ-A·NHA3(-BS)PUY-A·NHA3(-BS) OCS...

Page 3 - SAFETY PRECAUTION; Cautions for units utilising refrigerant R410A; Use new refrigerant pipes.; When charging directly from cylinder

3 SAFETY PRECAUTION 2 Cautions for units utilising refrigerant R410A 2-2. 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 - PART NAMES AND FUNCTIONS; Indoor unit

4 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. Tool name 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 ...

Page 5 - °F°C; Display Section

5 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 PAR-21MAA ON/OFF FILTER CHECK OPERATION CLEAR TEST TEMP. MENU BACK DAY MONITOR/SET CLOCK ON/OFF •• Display Section For purposes of this explanat...

Page 7 - SPECIFICATIONS

7 SPECIFICATIONS 4 AA 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 SizeMin.Circuit Ampacity External finishHeat exchangerFan Fan(drive) % No. Fan motor outputFan motor Airflow(Low-Middle-High) External static press...

Page 8 - NOISE CRITERION CURVES; UNIT

8 5 NOISE CRITERION CURVES UNIT WALL 3.3ft 3.3ft MICROPHONE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 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 APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE High...

Page 9 - OUTLINES AND DIMENSIONS

9 OUTLINES AND DIMENSIONS 6 Front side 46-1/16(1170) 9-1/2(241) 33-21/32(855) 2-29/32(74) 14-3/8(365) Emergency operation switch (cooling/heating) Terminal block for Outdoor unit Terminal block for MA-remote controller (only PKA-A·KA models) Front side(Grille open) Terminal block for power supply (o...

Page 10 - WIRING DIAGRAM

10 WIRING DIAGRAM 7 PKA-A24KA.TH PKA-A30KA.TH PKA-A36KA.TH PKA-A24KAL.TH PKA-A30KAL.TH PKA-A36KAL.TH 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 w...

Page 11 - REFRIGERANT SYSTEM DIAGRAM; Heat exchanger

11 REFRIGERANT SYSTEM DIAGRAM 8 Thermistor TH2Pipe temperature(Liquid) Distributorwith strainer (#50/#100) 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...

Page 12 - TROUBLESHOOTING; Malfunction-diagnosis method at maintenance service>

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 fi...

Page 19 - -4. TROUBLESHOOTING BY INFERIOR PHENOMENA

19 (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. Defective indoor controller board 9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor u...

Page 21 - Note on the wireless remote control

21 9-5. EMERGENCY OPERATION 9-5-1. When wireless remote controller fails or its battery is exhausted 9-5-2. When wired remote controller or indoor unit microcomputer fails When the remote controller cannot be used DEFROST/STAND BY lamp (ORANGE) Operation lamp (GREEN) Emergency operation switch (cool...

Page 22 - Normal; Thermistor R

22 9-6. HOW TO CHECK THE PARTS Parts name Check points Vane motor (MV) Measure the resistance between the terminals using a tester. (Coil temperature 68 " F ) Normal 250 ± 7% Abnormal - Brown-Red - Brown-Orange - Brown-Yellow - Brown-Green Open or short Fan motor (MF) Red Yellow Brown Orange Gre...

Page 23 - Wiring contact check; Sensor signal check

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 circu...

Page 24 - Indoor controller board; CNMF

24 9-7. TEST POINT DIAGRAM Indoor controller board PKA-A24KA.TH PKA-A30KA.TH PKA-A36KA.TH PKA-A24KAL.TH PKA-A30KAL.TH PKA-A36KAL.TH { CN51 Centrally control CN44 Pipe temperature thermistor 1 - 2 : Liquid (TH2) 3 - 4 : Condenser/Evaporator (TH5) CN20 Room temp.thermistor (TH1) CN90 Connect to the re...

Page 25 - -8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

25 SW1 Setting by the dip switch and jumper wire Functions Jumper wire Modelsettings Capacitysettings Pair numbersetting withwirelessremotecontroller Remarks SW2 J41J42 Indoorcontrollerboard type setting JP3 012 3 ~ 9 Wireless remote controller setting Control PCB setting J41 J42 <Initial setting...

Page 26 - SPECIAL FUNCTION; again the former request code No.; Outline of functions; Main unit; System constraint

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. · To operate the main unit, refer to the 10-1-2. and set the requet code No. which is not the same as the current one, and set again ...

Page 27 - · This function is available only in cooling mode.; NOTE; Rotation setting

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-i...

Page 28 - (2) Setting method of each function by wired remote controller; TEST

28 (2) Setting method of each function by wired remote controller B: Refrigerant addressC: Data display areaD: Request code display area TEST CHECK FILTER FILTER ON/OFF 1. Stop operation( ). 2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen ( ). After a while, [0...

Page 29 - DISASSEMBLY PROCEDURE; REMOVING THE PANEL; Photo 3; PHOTOS & ILLUSTRATIONS

29 DISASSEMBLY PROCEDURE 11 PKA-A24KA.TH PKA-A30KA.TH PKA-A36KA.TH PKA-A24KAL.TH PKA-A30KAL.TH PKA-A36KAL.TH 1. REMOVING THE PANEL (1) Press and unlock the knobs on both sides of the front grille and lift the front grille until it is level. Pull the hinges forward to remove the front grille. (See Ph...

Page 30 - REMOVING THE ELECTRICAL BOX; remove it from the box fixture.; Photo 4; out the vane motor unit.; PHOTOS

30 3. REMOVING THE ELECTRICAL BOX (1) Remove the panel and the corner box. (Refer to 1.)(2) Remove the front and side electrical box covers (each 1 screw). (3) Remove the indoor / outdoor connecting wire from termi- nal block (TB4). (4) Disconnect the connectors on the indoor controller board.(5) Di...

Page 31 - (10) Lift the heat exchanger, and pull out the line flow fan to the; Photo 7; Photo 8

31 6. REMOVING THE INDOOR FAN MOTOR AND THE LINE FLOW FAN (1) Remove the panel and the corner box. (Refer to 1.)(2) Remove the electrical box (Refer to 2.) and the nozzle assembly (Refer to 3.). (3) Remove the water cut. (See Photo 2)(4) Remove the screw fixing the line flow fan. (See Photo 8)(5) Re...