SERVICE MANUAL
Mod
el: HCM071PA
18
Issue 2013-11-21
Rev.
Ref1311S001V0
8-2. Abnormal phenomena
8-2-1. No cooling
YES
No cooling
Whether the freezer can start
Test according to the process of the freezer can not start
Cooling system or drier filter is blocked.
To evacuate and pour the cooling system and
recharge refrigerant again
Whether the temperature knob on “off” position
Exchange the thermostat
Check whether the working current of
compressor is higher than 120% of normal
operating current
If the noise of compressor is
loud
Check whether the working current of
compressor is lower than 80% of normal
operating current
The working sound of compressor is small
If compressor can run naturally and temperature
raising of condenser is very low
If the temperature raising of condenser and
drier filter is very low
Both high-pressure pipe and low-pressure pipe
temperature are same as the ambient temperature
Refrigerant leak, check and
repair charge refrigerant again.
Compressor defect and change it
YES
YES
NO
YES
YES
YES
YES
NO
YES
NO
NO
