DKC Via Larga 15, Operation And Maintenance Manual

Page: 12 / 44

12
TROUBLE SHOOTING
TROUBLE CAUSE ACTION
The cooler fails to start The cooler is not powered Check the power supply
switches/fusibles and the
electrical connections of the
system
The cooler stared, but fails to
refrigerate
The cooler is not charged Search for a coolant leakage,
repair it and charge the cooler
(qualified personnel only)
The thermostat failed Replace the thermostat
The compressor failed Replace the compressor
(qualified personnel only)
HP pressure switch failed Replace the HP pressure switch
(qualified personnel only)
The compressor works
intermittently even if the
enclosure temperature is above
the set value of the thermostat
Thermal short-circuit of the
condenser air.
Check the minimum distance
from walls or other coolers.
Remove the obstacles, if any.
The room temperature exceeds
the maximum allowable one
Air the room.
Modify the position of the cooler.
The air filter or the condenser is
unclean
Clean or replace the air filter.
Clean the condenser coil.