Mitsubishi SRK13YJV-S Technical Manual & Parts List page 45

Over heat of compressor
Is discharge pipe sensor
resistance value good?
Is sufficient quantity of refrigerant
circulated?
Error of signal transmission
Does error persist after power
reset?
Are the lines connecting the indoor
and outdoor units connected
normally?
Is DC 0~Approx. 12V detected
between ② ~ ③ terminals on
indoor unit terminal block?
Is DC 0~Approx. 12V detected
between ② ~ ③ terminals on
outdoor unit terminal block?
Is AC 220V applied between
① ~ ② on the outdoor side terminal
block?
(page 41)
YES
YES
Defective outdoor PCB
YES
YES
YES
YES
YES
Defective outdoor PCB
-
Connector connection check, resistance
NO
value check, replacement of discharge pipe
sensor
NO
Does trouble persist after
charging gas?
YES
Clogged capillary tube or
strainer, defective EEV, etc.
[Wiring error including power cable, defective indoor/
outdoor PCB]
NO
Trouble by transient cause, not unit trouble.
NO
Correct improper wire connection on indoor/
outdoor unit.
NO
Defective indoor PCB
NO
Check crossover wires.
NO
Defective indoor PCB. Check crossover wires.
43
-
[Gas shortage, defective discharge
pipe sensor]
NO
Check if there are any
places where gas is leaking.