TROUBLESHOOTING
HCAT TE - HCAN TE
33English 04/03
A
I
No voltage
Supply voltage too low
Main unit switch in OFF position
Automatic switch in the OFF position
No demand from internal unit
Check for presence of voltage
Check safety systems
upstream of the appliance
Check power line
Position in ON
Check
Contactor coil faulty
Electronic board faulty
Fuses faulty
Start-up capacitor faulty (if present)
Compressor faulty
Replace component
MALFUNCTION CAUSE REMEDY
Check
Check
Noise and vibrations
Contact between metal bodies
Repair
Weak foundations
Tighten screws
Loose screws
Compressor noisy
Liquid returning to compressor
Inadequate fixing
Reverse one phase
Reversed phase (three phase units only)
The condenser unit does
not start
Check
Replace component
Protection devices trip
and shut down the
compressor
Excessive discharge pressure
Low intake pressure
Low voltage
Electrical connections not sufficiently tight
Operation outside permitted limits
Faulty operation of pressure switches
Check supply voltage
Check electrical insulation of windings
Thermal cut-out tripped
Check
Insufficient output
High discharge pressure
Low intake pressure
Undersized unit
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