GEA Bock BCM2000 - Manual (Page 16)

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Troubleshooting
Display Possible fault causes or information message
Fault message
> Refrigerant or oil displaced in the machine
> Check electric valve, solenoid in liquid pipe for
function and leaks
5 = liquid at start
Fault message > One or all power supply phases not connected.
> For parallel operation: Sensor possibly affected by
the operation of an adjacent compressor
(–> bypass function).
Fault message 6 is displayed although the compressor
is running:
6 = compressor not turning > Operating vibrations too low. Vibration sensor cannot
LED ON / Compressor OFF detect the compressor running due to the exception-
ally quiet operation.
> Adjust the sensor’s sensitivity (Bock service software
required for this). This position can also be temporarily
shut down without the service software by tripping
DIP switch 6. Multiple monitoring of this position
ensures that the compressor is fully monitored.
Information message > More than 12 start-ups per hour
> Faulty control or setting
> Insufficient refrigerant
> Condenser pressure control fault
> Evaporator icing
7 = Surge op. too high > E-valve problem
LED ON / Compressor ON > SL filter or dryer contaminated
Information message
> Oil change is recommended
> Filter or dryer change can be associated with
this message
8 = Recommended oil change
LED ON / Compressor ON