Heat Pump, Split System, Single Service, 3 phase
Maintenance Document 1394-1 53
4.4 Service parts information
4.4.1 Service parts information 1 : Compressor
Does not start up
Diagnosis method of compressor (if outdoor unit LED displays error, refer to Failures and clears)
Abnormal noise Stops soon after starting up
Is there open or loose
connection cable?
Check connection of
compressor, and winding
resistance (Refer to the next
page).
If there is no failure, the
defected of compressor is
considered (locked
compressor due to clogged
dirt or less oil).
Replace compressor
Is there open or loose
connection cable?
Is gas pipe valve open ?
(Low pressure is too low)
Check if refrigerant is leakin.
Recharge refrigerant.
Check if stainer is clogged
(Parts information 3)
Check inverter PCB, connection of compressor, and
winding resistance (refer to the next page).
If there is no failure, the defected of compressor is
considered (Compression part broken or valve
defective).
Replace compressor
Check if vibration noise by
loose bolt or contact noise of
piping is happening.
Defective compressor can
be considered (due to inside
dirt clogging or broken
component).
Replace compressor
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