Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 109

 Function of Connection
(1) Control PCB input
Mark Connecter
Tho-A CNTH Outdoor air thermistor
Tho-R1 CNTH Heat exchanger thermistor (exhaust)
Tho-R2 CNB2 Heat exchanger thermistor (exhaust)
Tho-R3 CNB3 Heat exchanger thermistor (inlet)
Tho-R4 CNB4 Heat exchanger thermistor (inlet)
Tho-D1 CNTH Discharge pipe thermistor 1(CM1)
Tho-D2 CNC2 Discharge pipe thermistor 2(CM2)
Tho-C1 CNU1 Under-dome thermistor 1(CM1)
Tho-C2 CNU2 Under-dome thermistor 1(CM2)
Tho-P1 CNP1 Power transistor thermistor 1(CM1)
Tho-P2 CNP2 Power transistor thermistor 2(CM2)
Tho-S CNTH Suction pipe thermistor
Tho-SC CNF1 Sub-cooling coil thermister 1
Tho-H CNF2 Sub-cooling coil thermister 2
CT1 Current sensor (CM1)
CT2 Current sensor (CM2)
PSH CNL1 High pressure sensor
PSL CNL2 Low pressure sensor
63H1-1 CHQ1 High pressure switch (CM1)
63H1-2 CHQ2 High pressure switch (CM2)
CNS1 External operation input
CNS2 Demand input
CNG1 Forced operation input cooling/heating
CNG2 Silent mode input
Power source CNW1 Open phase detection 380-415V
Power source CNW2 For transformer (DC10,15.1V)
Power source CNA2 Fan motor
(3) Control PCB input/output
Mark Connecter
FM01 CNFAN1-1 DC 15 V output (Vcc)
-2 Reverse turn detection output (REV)
-3 Speed command output (Vsp)
-4 RPM monitor input (FG)
-5 Over-current error input (OverC)
-6 Overheat error input (OverH)
FM02 CNFAN2-1 DC 15 V output (Vcc)
-2 Reverse turn detection output (REV)
-3 Speed command output (Vsp)
-4 RPM monitor input (FG)
-5 Over-current error input (OverC)
-6 Overheat error input (OverH)
Cnl11 Inverter protocol
CnX1 Super Link protocol
CnX2 Spare for Super Link protocol
Function
Function
106
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(2) Ountrol PCB input
Mark Connector Function
52X1 CNM1 Solenoid value for CM1
52X2 CNM2 Solenoid value for CM2
20S CNN1 4-way valve
SV6 CNN2 Solenoid valve (oil return CM1)
SV7 CNN3 Solenoid valve (oil return CM2)
SV1 CNN6 Solenoid valve (CM1:liquid bypass)
SV2 CNN7 Solenoid valve (CM2:liquid bypass)
FMC1,2 CNN8 Fan for IPM
SV13 CNN11 Solenoid valve (gas bypass)
CH1 CNR1 Crankcase heater (CM1)
CH2 CNR2 Crankcase heater (CM2)
52XR CnH Operation output
52XE CnY Error output
CnZ1 EEV selection
CnE RAM Checker output
CnV For servicing (for rewriting soft ware)
LED1 Inspection (Red)
LED2 Inspection (Green)
LED3 For service (Green)
7 SEG G1 7 seg LED1 (function indication)
7 SEG G2 7 seg LED2 (data indication)
R,S CNA1
(4) Expansion value PCB
Mark Connecter
CT2 CNCT4 Compressor current (CM2)
EEVH1 CNEEV1 EEVH1 for heating (Front)
EEVH2 CNEEV2 EEVH2 for heating (Rear)
EEVSC CNEEV3 EEV-SC for Subcooling coil
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Function