8.1.4 Fault finding in electrical control system
Description Cause Rectification
Control system does not
switch on.
No control voltage present.
Control fuse defective.
Control voltage circuit inter-
rupted due to loose line or
terminals.
Thermal over-current relay
has responded.
Check the supply line.
Replace fuse and rectify the
cause.
Tighten the terminals.
Check compressor drive and
correct the settings.
Thermal over-current relay for
drive motor responds.
Power consumption too high.
Over-current relay is set too
low.
Check compressor drive.
Rectify the setting.
Control system does not
switch off; the final pressure
safety valve blows off.
Final pressure monitor is set
too high.
Final pressure safety valve de-
fective.
Rectify the setting.
Replace the safety valve.
On-site residual current de-
vice (RCD) responds.
Residual current device is un-
suitable.
Use all-current sensitive RCD
(type B).
8.1.5 Error display B-TIMER
Description Cause Rectification
"Error 1" or "Error 2" is shown
on the display.
Temperature sensor defec-
tive.
B-TIMER must not be used
any longer. BAUER Contact
the Customer Service and get
the device repaired.
OPERATING MANUAL Troubleshooting | 8
28.08.2019
A_002_en
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