Samsung AC018JN4DCH/AA Service Manual page 81

1. Test Item
1) Check the power supply. / Check the re-startup after the power is reset.
Does the error occur again at operation after power is reset?
2) Check the compressor and the state of the compressor wire assembling.
3) Check the outdoor unit installation environment.
check the installation environment.
and pipes have been wrongly connected!
2. Check procedure
30 seconds after power off, power on.
Did the error occur?
Check the compressor
and the state of the compressor
wire assembling.
1. Do the inter-phase resistance values of
the compressor coincide?
(U V, U
2. Are the wires on the compressor correctly
connected? (Non-connection, wrong
3. Is there abnormal noise in
the rotation of the
compressor?
Have the pipes and wires of indoor and
outdoor units been correctly installed?
Samsung Electronics
Check for disconnection of the wires regarding the inverter PBA of the outdoor unit and
At the site where several units were installed at the same time, check whether communication connections
Yes
W, V W)
connection)
Yes
Yes
Continued
Is there a fault in input power?
No
1. Compressor replacement: If the interphase
resistance values of the compressor are
different.
normal startup.
2. Wire reassembling: If there is any fault in the
No
connection of the wires of the compressor
Power is on.
startup.
3. Compressor replacement: Serious abnormal
noise (Metallic scraping or grinding noise),
serious vibration
No
Pipe
Wire
Troubleshooting
End the service.
Power is on. Check the
End the service.
Check the normal
End the service.
Re-install correctly under
the product specifications.
Poor installation
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