Troubleshooting - Johnson Controls CWP Manual De Instalación Y Mantenimiento

Troubleshooting

10 TROUBLESHOOTING
The table below lists the anomalies of operation of the unit, the relevant causes and the corrective measures.
For anomalies of any other type or not listed, contact one of Itelco-Clima's Service Centre for technical assis-
tance.
Anomaly
The unit continues to work,
but without cooling.
Ice on the suction line.
Excessive noise.
Low oil level
in the compressor.
Cause
Insufficient charge of refrigerant.
The dehydrating filter is clogged.
Wrong calibration of overheating.
Vibration of lines.
Whistler emitted by the thermostatic
expansion valve.
Noisy compressor.
One or more gas or oil leaks in the
circuit.
Mechanical failure of the compres-
sor.
Anomaly of the oil heater of the
compressor's base.
Operation
Refill.
Replace.
Increase overheating.
Check the charge.
Check the clamping brackets, if any.
Refill.
Check the dehydrating filter.
Seized bearings; replace the com-
pressor.
Check that the compressor's locknuts
are tightened.
Identify and remove leaks.
Request the intervention of a Service
Centre.
Check the electric circuit and the resis-
tor of the heater of the motor base,
and replace defective components.
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