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TROUBLESHOOTING
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[] ~ [] Activation of Thermal Relay for Compressor
!
This alarm code is indicated when the compressor running current is more than thermal Relay Setting Value.
Is alarm activated just after
running operation?
Is 220-240V the voltage between
connector PCN207 PIN1 and
connector PCN 207 PIN3 on the
Printed board for Relay (PCB
Wiring Check
[] ~ [] No Feedback Signal from Water Pump
!
CMP pump feed back signal is not coming and Unit stops
Is 220-240V between PIN1 and
PIN3 of connector PCN4 on the
printed circuit board for CPU
(PCB
Check printed circuit board for
CPU (PCB
Yes (activated
immediately)
No (Activate
after a while)
No (Printed Circuit
Board is normal)
)?
D
Yes
No (Printed Circuit
Board is normal)
)
C
Yes
)
C
Is 220-240V the
voltage between
Yes
connector PCN207
PIN1 and connector
PCN 207 PIN3 on
the Printed Circuit
Board for Relay
(PCB
) ?
D
No
Excessive or short power source voltage
Interphase of power source voltage is imbalanced.
Compressor motor is locked
Insulation of compressor motor is lowered
Power fuse for compressor motor is broken
Power source terminal screw loosened
Thermal relay for compressor failure
Compressor slide valve malfunction
Yes
Is pump thermal relay for
pump (TRP) activated?
No
Check Printed
Circuit Board for
Relay (PCB
)
D
Wiring Check
(breaking of wire,
wrong wiring)
Check pump
lock
Check thermal
relay for pump
Check wiring
around pump
and thermal relay
for pump
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