Gas Leakage Error (Error Code : E554) - Samsung AC009BNLDCH Service Manual

Troubleshooting

4-4-19. Gas leakage error (Error Code : E554)

Outdoor Unit display
Wired remote Control, Wind Free RAC
Duct, 1way Cassette
Display
Duct
Blue Red
1way
Blue Yellow
X X
Judgment
method
Symtom
1. Test items
1) Check the power connection. / Check the restart after power reset.
→ Is there a fault in input power? (Single-phase : 220Vac, 3-phase : 380Vac)
→ 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.
→ Check for disconnection of the wires regarding the Inverter PCB of the outdoor unit and check the installation
environment.
→ 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
Power on 30 seconds after power off.
Power on 30 seconds after power off.
Check the compressor
and its connecting wires.
1. Are all the resistance values between phases matched?
(U ↔ V, U ↔ W, V ↔ W)
2. Is compressor wiring normal?
(disconnection, wrong connection)
3. Is there any abnormal noise from
compressor rotation?
4-80
E554
E554
4way Cassette,
4way Cassette(600x600)
or
or
or
◑ ◑ ◑ ◑
X
Yes
Yes
Continue
MAX4
◑ ◑ ◑ ◑
●
No
End the service.
1. Replace the compressor :
If the resistance value between phases of the compressor is
different. → Power on.→ Check the normal operation. → End the
service.
No
2. Reassemble wire :
If the wire connection of the compressor is wrong.→ Power on. →
Check the normal operation. →End the service.
3. Replace the compressor :
When loud abnormal noise generates (metal cutting or grinding
noise), or severe vibration.
Console
◑ ◑ ◑
X X
Samsung Electronics
360 Cassette
BLUE ◑