Mitsubishi Electric PLA-A42BA - Manuals

Mitsubishi Electric PLA-A42BA – Manual in PDF format online.

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Manual

Manual Mitsubishi Electric PLA-A42BA

Summary

Page 3 - SAFETY PRECAUTION; Cautions for units utilising refrigerant R410A; Use new refrigerant pipes.

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 - When charging directly from cylinder

4 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. Tool name Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications. (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·U...

Page 5 - PART NAMES AND FUNCTIONS

5 4 PART NAMES AND FUNCTIONS Drain pipe Filter Vane Gas pipe Liquid pipe Air outlet i-see sensor (option) Air intake(Intake grille)

Page 6 - °F°C; Display Section; Wired

6 °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 explanation,all parts of the dis...

Page 8 - SPECIFICATIONS

8 Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) % No. Fan motor output Fan motor Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level (...

Page 10 - NOISE CRITERION CURVES

10 6 NOISE CRITERION CURVES PLA-A12BAPLA-A12BA 1 PLA-A18BAPLA-A18BA 1 NOTCH SPL(dB) LINE High 31 Medium1 29 Medium2 28 Low 27 NOTCH SPL(dB) LINE High 32 Medium1 31 Medium2 29 Low 28 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE NC-60 ...

Page 11 - UNIT

11 PLA-A36BAPLA-A36BA 1 PLA-A42BAPLA-A42BA 1 NOTCH SPL(dB) LINE High 40 Medium1 37 Medium2 34 Low 32 NOTCH SPL(dB) LINE High 41 Medium1 39 Medium2 36 Low 34 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 N...

Page 12 - OUTLINES AND DIMENSIONS; Floor; Detail drawing of fresh air intake hole

12 INDOOR UNITPLA-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.94-1/2(2400)from floor Entireperiphery (36)...

Page 13 - WIRING DIAGRAM; Be sure to turn off the power source

13 8 WIRING DIAGRAM INDOOR UNITPLA-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 MODELS SW2 ON OFF 1 2 3 4 5 Service MODELS ON OFF 1 2 3 4 5 ON OFF 1 2 3 4 5 ON OFF 1 2 3 4 5 ON OFF 1 2 ...

Page 15 - Heat exchanger; REFRIGERANT SYSTEM DIAGRAM

15 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 16 - TROUBLESHOOTING

16 10 TROUBLESHOOTING Unit conditions at service Error code Actions to be taken for service (summary) The trouble is reoccurring. Displayed Not displayed Judge what is wrong and take a corrective action according to “SELF-DIAGNOSIS ACTION TABLE” (10-3). Identify the cause of the trouble and take a c...

Page 17 - To be continued to the next page.; Malfunction-diagnosis method at maintenance service>; • The check mode is cancelled.

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 andpress the HOUR button. 4. Point the remote controller at the sensor on the indoor unit andpress the ON/OFF button. ON/OFF TEMP FAN VANE MODE CHECK LOUV...

Page 24 - 0-4. TROUBLESHOOTING BY INFERIOR PHENOMENA; Phenomena

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. Defective indoor controller board 10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor ...

Page 26 - When the remote controller cannot be used

26 10-5. EMERGENCY OPERATION 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 controller cannot be used When the batteries of the remote controller run out or the remote control-ler...

Page 27 - NOTE

27 10-6. HOW TO CHECK THE PARTSPLA-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 Par ts name Check points Disconnect the connector then measure the resistance with a tester.(At the ambient temperature of 10˚C[50˚F]~30˚...

Page 28 - Thermistor R; Wiring contact check; Temperature

28 <Thermistor Characteristic graph> Room temperature thermistor(TH1)Pipe temperature thermistor/liquid(TH2)Condenser/evaporator temperature thermistor(TH5) Thermistor R 0 =15k ± 3% Fixed number of B=3480 ± 2% t( )Rt=15exp { 3480( ) } 7Û)5W H[S^ ` 0 Û) N 10 Û) N 20 Û) N 25 Û) N 30 Û) N 40 Û) N...

Page 29 - Indoor controller board; and; : Voltage between pins of; : Voltage between pins of C955

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 CN3CTransmission(Indoor/outdoor)(0~24V DC) SW2Capacity setting SW1Model selection CN2LConnector (LOSSNAY) CN41Connect...

Page 30 - MODELS; 0-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

30 SW1 Setting by the dip switch and jumper wire Functions Jumper wire Modelsettings Capacitysettings Pair numbersetting withwirelessremotecontroller Remarks SW2 J41J42 Unit type setting JP1 Indoorcontrollerboard type setting JP3 012 3 ~ 9 Wireless remote controller setting Control PCB setting J41 J...

Page 31 - SPECIAL FUNCTION; Operation pattern; Main unit; System constraint

31 31 11 SPECIAL FUNCTION Operation pattern OC-1 OC-2 IC-1 IC-2 3(2) 3(2) 2 RC 2 Mainunit Subunit Refrigerant address"01" Refrigerant address"00" Fig 1 [Back-up function only]··· Request code number "312" [Rotation function] & [Back-up function]··· Request code number ...

Page 32 - NOTICE

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. Setting No. (Re...

Page 33 - (2) Setting method of each function by wired remote controller; Outline of functions

33 33 (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 running the air-conditioner( ). 2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen (...

Page 34 - DISASSEMBLY PROCEDURE; OPERATING PROCEDURE; Removing the air intake grille; (1) Slide the knob of air intake grille toward the arrow; Removing the electrical box; Photo 1

34 11 DISASSEMBLY PROCEDURE OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 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.(3) Slide the shaft in the hinge to the direction of the...

Page 35 - Removing the panel; Detail

35 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 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. (See photo 3)(4) Remove the coil pla...

Page 36 - Photo 8; Removing the heat exchanger

OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 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).(5) Remove the float sw...