Fault description Cause Remedy
Empty signal/prewarning even though the
supply container is full
Suction pipe in supply
container is incorrectly
positioned
Correctly position the suction pipe in the
supply container
Float in the suction pipe
blocked
Repair float
Plug or stopper on the
suction pipe loose or not
inserted
n Check that the plug and stopper are
(firmly) inserted
n Clean contacts
Cable fault on the suction
pipe
Change empty signal settings
Leak detection of the drip pan not
functioning
Power supply cable
damaged
Replace power supply cable
Incorrect control voltage
Check control voltage
Connection faulty
Check connection using the connection
diagram
Medium has a control value
<200 mS
Have the leakage sensor replaced with
another sensor
Troubleshooting
89 MAN046590 Rev. 6-03.2022
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