Mitsubishi Electronics PCA-A24GA service manual PCA-A36GA PCA-A36GA1

Page 24

10-6-2. Indoor controller board

PCA-A24GA PCA-A30GA PCA-A24GA1PCA-A30GA1

CN2D

Connect to the indoor power board (CN2S) (12.5~13.7V DC)

CN3C Transmission (Indoor/outdoor) (0~24V DC)

CNDK

Connect to the indoor power board (CNSK) (208/230V AC)

FUSE

(6.3 A 250 V)

CND Power supply input

(208/230V AC)

CNP Drain-pump output (DP)

(208/230V AC)

SWE

Emergency operation

FAN

Fan motor output

PCA-A36GA PCA-A36GA1

LED1

Power supply (I.B)

PCA-A42GA PCA-A42GA1

LED2

Power supply (R.B)

LED3

Transmission (Indoor/outdoor)

CN22

Connect to the terminal block(TB5)

(Remote controller connecting wire)

(10.4~14.6V DC)

CN20

Room temperature thermistor (TH1)

CN21

Pipe temperature thermistor/Liquid (TH2)

CN29

Condenser/evaporator temperature thermistor (TH5)

CN31

Drain sensor (DS)

CN90

Connect to the wireless remote controller board (CNB)

CN6V

Vane motor output (MV)

CN41

Connector (HA terminal-A)

CN51

Centrally control

CN24

Heater output (12V DC)

CN32

Remote switch

CN2L Connector (LOSSNAY)

Jumper wire J41, J42 Pair number setting with wireless remote controller

SW2

Capacity setting

SW1

Model setting

24

Image 24

Contents Contents Revised EDITION-BPCA-A24GA PCA-A30GATechnical Data Book Technical ChangesReference Manual Safety Precaution Always Observe for SafetyWhen charging directly from cylinder Additional refrigerant chargePart Names and Functions Indoor UnitDisplay Section Operation Mode display Mode Select buttonTemperature setting display Timer displaySpecifications Service RefPCA-A30GA, PCA-A30GA1Single phase, 60Hz, 208/230V PCA-A36GA, PCA-A36GA1Single phase, 60Hz, 208/230VNoise Criterion Curves PCA-A24GA1PCA-A30GA1 PCA-A36GA1Outlines and Dimensions PCA-A24GA PCA-A24GA1 PCA-A30GA PCA-A30GA1PCA-A36GA PCA-A42GA PCA-A36GA1 PCA-A42GA1 Unit inchmmWiring Diagram Indoor unit Installation ManualRefrigerant System Diagram Heat exchangerTroubleshooting TroubleshootingSELF-DIAGNOSIS Action Table Pipe temperature Cause Countermeasure Freezing/overheating protection isWorking Cause Countermeasure Pipe temperature thermistor Remote controller transmissionErrorE0/signal receiving errorE4 ErrorE3/signal receiving errorE5Error Signal receiving error Error Transmitting errorRemote controller control board Indoor controller boardTroubleshooting by Inferior Phenomena Phenomena Cause CountermeasureIs off Ply system4Receiver for wireless remote Is blinking3Upward/downward vane Performance failurePage Vane motor MV Test Point Diagram Between 1 to 3 12.6-13.7V DC Pin1 +Connect to the indoor controller board CN2D PCA-A36GA PCA-A36GA1 Functions of DIP Switch and Jumper Wire ModelsDisassembly Procedure Operating Procedure Photos & IllustrationsRemoving the air intake grille Removing the electrical boxOperating Procedure Removing the fan motor MFRemoving the sirocco fan Remove the air intake grilleOperating Procedure Photos Removing the vane motor MVRemoving the Indoor coil thermistor TH2/TH5 Removing the Under panelRemoving the drain pan Removing the guide vaneRemove the intake grille. See the figure Removing the Auto vaneRemoving the heat exchanger Parts No Parts Name Specifications Drawing NoR01 29J 130 R01 35J 130Structural Part PCA-A24GA PCA-A30GA PCA-A36GA PCA-A42GA Electrical Parts PCA-A24GA PCA-A30GA PCA-A36GA PCA-A42GA Parts Name Specifications RoHSRemarks Parts NoStructural Part PCA-A24GA1PCA-A30GA1PCA-A36GA1PCA-A42GA1 Wiring Recom Electrical Parts PCA-A24GA1PCA-A30GA1PCA-A36GA1PCA-A42GA1RoHS Qty/ set