Error
Cause
Result
Magnet valve not or not properly
connected
Check or establish connection
Message / indication "Backflow"
Water does not run off, drain is
clogged
Clean the sewer line, remove the
cause
Sewer line dimensioned too small
Adjust the dimension
Mount an additional siphon in the
drain downstream of the flush
valve
Remove the siphon
(Test) flushing process is not car-
ried out
Backflow
Remove the cause (see above)
Floating switch defective or not
properly connected
Check the floating switch, replace
if necessary (see Maintenance /
repair)
No power supply
Check or establish power supply
Control defect
Check and if applicable replace
control
Magnet valve defective
Check magnet valve, replace if
applicable
Output "Flushing ongoing" not
properly connected
Check the output "Flushing
ongoing"
External flushing command
(floating or voltage) not properly
connected
Check the connection and the ter-
minal -> jumper the terminal at the
control
Test button for actuation defective Check and if applicable replace
control
No Reset done after backflow
Check for backflow, press Reset
External flushing command not
parameterized
Set up or check the flushing com-
mand at the external (customer-
provided) control
Voltage too high or too low (6–48 V
AC/DC)
Check the control voltage, adjust if
applicable
Sewer smell at installation site
Siphon leaks
Check the drain
Check the seat of the drain socket,
replace if necessary
No message "Flushing ongoing"
though flowthrough is present
Flow switch defective
Check the flow switch, replace if
necessary
Flow switch set to wrong flow
direction
Check the flow switch -> observe
flow direction
Flow switch not properly con-
nected (control)
Check or establish connection
Insufficient flowthrough
Sieve in magnet valve is clogged.
Clean sieve
Handling
Flush valve universal
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