Troubleshooting
4-51
4-4-20. Gas leakage error(Error Code : E554)
1. Test
items
1) Check the power connection. / Check the restart after power reset.
ĺ
Is there a fault in input power? (Single-phase : 220Vac, 3-phase : 380Vac)
ĺ
Does error occur again at operation after power is reset?
2) Check the compressor and the state of compressor wire assembling.
3) Check the outdoor unit installation environment.
ĺ
Check for disconnection of the wires regarding the Inverter PCB of the outdoor unit and check the installation environment.
ĺ
At the site where several units were installed at the same time, check whether communication wire and pipes have been wrongly connected!
2. Check
procedure
Yes
Power on 30 seconds after power off.
End the service.
No
Power on 30 seconds after power off.
1. Replace the compressor : If the resistance value
between phases of the compressor is different.
ĺ
Power on.
ĺ
Check the normal operation.
ĺ
End the service.
2. Reassemble wire : If the wire connection of the
compressor is wrong.
ĺ
Power on.
ĺ
Check the normal operation.
ĺ
End the service.
3. Replace the compressor : When loud abnormal
noise generates (metal cutting or grinding noise),
or severe vibration.
No
Yes
Install again by following the standard specifications.
No
Yes
Continue
Piping
Wiring
Bad installation
ཱ
ི
Check the
compressor
and its connecting wires.
1. Are all the resistance values between
phases matched? (U
ļ
V, U
ļ
W, V
ļ
W)
2. Is compressor wiring normal?
(disconnection, wrong connection)
3. Is there any abnormal
noise from compressor
rotation?
Is indoor and outdoor unit wiring/piping
installed properly?
