404
Super Match
Module current detect circuit failure
Correct the wire due to diagram
Check if wire between IPM
and compressor is correct
Y
N
Replace power
module
Suction temperature too high
In heating mode:
Check if there is power
supply output from O.D.
PCB for the 4 way valve
In cooling mode:
Open the stop valve
Check if the stop valve is not
opened
If the E.E.V is not been
plugged to the 0.D.
PCB?
If the refrigerant is
lacked
Plug the E.E.V to the 0.D. PCB
Recharge the refrigerant
Y
N
Y
Replace the O.D. PCB
Y
N
If the four way valve is
reversing successful?
Replace the four way valve
Y
Y
N
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