Samsung AM040FXMDEH Service Manual page 74

4) Abnormal operation of the Compressor
Inspection item : Operation current of Outdoor Unit Compressor.
Error code: None (The resulting report "Undetermined")
Determine the status of the operating current of the each Outdoor Unit Compressor.
If the judgment of operation current of Outdoor Unit Compressor is "Undetermined" :
Checking in accordance with the following order.
Is Outdoor Unit
Power supply specifications and wiring
status normal?
When Outdoor Unit is
stopped state : Is current(CT)value of
Compressor 0?
Is resistance between
the phase of compressor normal?
Restart Automatic Commissioning
after current meter installation.
Is the current
measurement results of the compressor
and CTsensor have the same
value?
Is Compressor current(CT) value normal?
Complete
Samsung Electronics
Yes
Yes
Yes
Yes
Yes
Check Operation & Amount of Refriherant Automatically Checking
No
Confirmation and Measures
No
Replace Inverter PCB
No
No
Replace Inverter PCB
Is refrigerant in
No
the system properly?
Adjusts the refrigerant
(Addition / Emitted)
IIs operation
current of Compressor
normal?
Yes
No
No
Yes
Replace Compressor
73