EN/
0915/WLA Compact
/56
Problem
Possible cause
Recommended intervention
9.
the chiller runs
continuously
no refrigerant gas
see point vii
incorrect thermostat configuration
check and restore the original configuration
excessive thermal load
reduce thermal load
10.
the chiller runs but
does not cool down
no refrigerant gas
see point vii
presence of humidity in the refrigerant
circuit
discharge, dry the circuit, replace the filter,
make vacuum and recharge.
open hot gas bypass valve
check and/or replace it
11.
the chiller produces
anomalous noise
noisy compressor
scroll compressor with incorrect rotation.
Check the correspondence between the motor
winding connection and the electrical diagram
on the motor. Invert the phases in order to
comply with the correct rotation.
noisy thermostatic valve
check and/or replace it
vibrations coming from the pipes
check and/or bracket the pipes
noisy body
check the fixing of the hardware
