Domestic water
circulation
Radiator heating, one-pipe system
Pump does not function, no power. Check that:
A the power plug is plugged in,
B the switch is turned on.
5. The LED is lit – An axle or impeller is stuck. To release
the axle/impeller, press on the screw in front of the pump
and turn it using a screw driver.
4. The LED is lit – Supply voltage too low
Check the supply voltage.
3. The LED is lit – Supply voltage too low, severe
malfunction
Check the supply voltage. Replace the pump.
TROUBLESHOOTING
FAULT DISPLAY
SOLUTION
RECOMMENDATION SETTING INDICATION
We recommend you use heating system specific energy optimised
pump functions. Please see instructions on page 1.
Constant curves for fixed rotation speed
Page
2
ALARM STATUS
FAULT
BLOCKED
LOW VOLTAGE
ELECTRICAL ERROR
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