Troubleshooting
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Troubleshooting Explanation/Cause of error
Troubleshooting
Er 1
Control unit does not receive enough
pulses from the microswitch
Contact the specialist
installer or Grünbeck's
technical service.
If water leaks from the drain
opening, close the filter
manually.
Motor blocked or defective
Mechanical connection between motor
and pipe nozzle sheared off
Worn thread
Microswitch defective or set incorrectly
Line interrupted between microswitch
or motor and control unit
Control unit defective
Er 2
Control unit receives too many pulses
from the microswitch
Contact the specialist
installer or Grünbeck's
technical service.
If water leaks from the drain
opening, close the filter
manually.
Rubber gasket for backwash water
outlet has fallen out
Mechanical connection in the filter
sheared off
Microswitch defective or set incorrectly
Er 3
Filter element can no longer be
cleaned due to severe contamination of
the raw water
Contact the specialist
installer or Grünbeck's
technical service.
In case of severe
contamination, we
recommend installing a
coarse dirt filter upstream.
Work on the water supply network
If a malfunction
Er 1, Er 2
or
Er 3
is acknowledged, the control unit closes the filter for a
period of approximately 60 s to ensure that it is closed and then performs a backwash for
checking purposes.
