118 English 5.906-432.0 Rev. 00 (06/15)
9.1 Error messages
Display Explanation Remark
Rotating field of the motor incorrect. Perform a phase inversion
in the commutating pole
plug.
Thermal motor protection switch (WSK) in the motor has
tripped.
Switch off the device and al-
low the motor to cool down.
Mains voltage too low or too high or phase failed or the motor
current is too high.
Check power supply.
Check the pump for slug-
gishness.
Water shortage (dry running after 2 minutes). Open tap.
Ensure water supply.
Exhaust temperature is too high Perform maintenance on
the burner.
Time monitoring active for 30 minutes, continuous break/con-
tinuous operation
Switch the device off and
back on.
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