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5 Control System
5.2.5 RAS-(8-10)HN(P/C)E
PCB1 Connector indication
Connector
R1,N1,R2,
Power supply and reverse phase detection
S2,T2
PCN5
Crankcase heater of compressor (oil)
PCN7
Solenoid valve
PCN8
High pressure switch protection
PCN9
Compressor contactor
PCN10
Low pressure switch protection
PCN14
Solenoid valve (only RAS-(8-10)HNPE)
PCN100
4-way solenoid valve
PCN406
Power connection between PCB1 and PCB3
THM7
Outdoor air temperature thermistor
THM8
Pipe evaporation temperature thermistor
THM9
Compressor discharge temperature thermistor
CN1
Input function
CN2
Demand input
CN5A
Micro electronic expansion valve
CN6
Transmission between PCB1 and DIP-IPM
CN7
External output
CN8
Transmission from outdoor to indoor unit
CN100
Discharge pressure (Pd)
CN102
Line connection between PCB1 and PCB3
CN404
Line connection between PCB1 and PCB3
CN405
Motor for fan 2
CN406
Motor for fan 1
EF1,2,3
Power protection
EFR1
142
SMGB0087 rev.0 - 12/2013
PCB1
Name
EF1
L2
C8
C7
JP1
PCB1 Switch indication
Connector
DSW1
Test run
DSW2
Auxiliary function setting
DSW3
Capacity code
DSW4/
Refrigerant cycle number
RSW1
DSW5
End terminal resistance
DSW6
Simultaneous / individual operation
PCB1 LED indication
LED
Colour
LED1
Red
Power source for the PCB
This LED indicates the transmission status
LED2
Green
between the indoor unit and the RCS
This LED indicates the transmission status
LED3
Yellow
between the indoor unit and the outdoor unit
LED4
Red
Power source at 280V for the PCB
PCB3 Connector indication
Connector
PCN201
Power supply
PCN202
Power connection between PCB3 and PCB1
CN201
Line connection between PCB3 and PCB1
CN202
Line connection between PCB3 and PCB1
EFR1
Power protection
PCB3
TAB4
TAB3
Name
Name
Name
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Troubleshooting
