59
NOISY UNIT
UNIT NOISY
The shock absorbers on the
compressor are in good
condition
?
Unit working
NO
The pipes vibrate?
The compressor fastening
screws have come loose?
YES
YES
Check and replace if
necessary
Check tightness
Check and tighten if
necessary
NO
YES
NO
COMPRESSOR DOESN’T START
COMPRESSOR DOESN’T START
No power at the terminals?
Unit working
YES
Klixon activation
( 1 )
Check that the coil is not
burnt out and the contacts
are not oxidised
Motor burnt out
( 2 )
O
Relay working?
Compressor blocked
( 3 )
NO
YES
Isolating switch closed?
NO
Close
YES
Control module
working?
NO
Check and replace if
necessary
YES
Notes
1) The Klixon is activated when the temperature of the compressor casing is quite high.
Check the causes before re-starting the unit.
2) Check if the windings are earthed. If necessary, replace the compressor.
3) The mechanical blocking of the compressor is indicated by a constant and typical noise. In this case, replace the compressor.