Samsung AC024BXUPCH - Gas Leakage Error - (E554)

Troubleshooting
Samsung Electronics 4-31
4-4-26. Gas leakage error - (E554)
1. Test items
1) Check the power connection. / Check the restart after power reset.
→ Is there a fault in input power? (Single phase: 208-230Vac)
→ 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
No
Yes
Power on 30 seconds after power off.
End the service.
Power on 30 seconds after power off.
1. Replace the compressor :
If the resistance value between phases of the compressor is
different. → Power on.→ Check the normal operation. → End the
service.
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.
No
Yes
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?
Continue
Outdoor unit display
Judgment Method
• Check if the service vavle is open
• Check if there's any blockage on the refrigerant pipe.
• Check the EEV connection and operation
• Check if connecting wire and the pipe are okay.
• Check the compressor
Cause of problem -