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7.3
Troubleshooting
Help with faults (messages on the display)
Fault
Rotary field error
Actuator valve fault
Motor protection
Phase error
Relay operating cycles
Temperature fault
Undercurrent
Overcurrent
Relay error
42 / 148
Cause
Wrong rotary field for mains connection Connect rotary field correctly.
Actuator valve limit switches are not
being reached
Motor protection switch has triggered
Current value for pump not set cor-
rectly
Motor current too high due to faulty or
blocked pump.
Increased current due to phase failure
One of the phases is no longer avail-
able
Power contactor has carried out more
than 100,000 operating cycles
Winding temperature switch has trig-
gered
The minimum current of the pump is
not being reached. (The cable from the
control unit to the motor could be inter-
rupted or damaged).
The maximum current of the pump has
been exceeded. (e.g. blockage)
Power contactor is no longer switching
Action(s)
Check the connections of the limit
switches, check valve for blockages.
Switch motor protection switch on again.
Adjust setting in the
|Number of
menu.
pumps|
Carry out pump maintenance.
Check the voltage for phase failure.
Check the mains connection on the con-
trol unit, test residual current device.
Message can be acknowledged. Mes-
sage appears again after a further 1,000
operating cycles. Have the power con-
tactor replaced by customer service.
Self-resetting when the motor cools
down. Acknowledge fault message with
alarm button, please contact Customer
Service if further temperature fault mes-
sages are issued.
Check cable and repair if necessary.
Replace pump, if defective.
Remove blockage (follow the safety
instructions). Replace pump, if defec-
tive.
Switch off the voltage supply for the
control unit and have the power contac-
tor replaced by Customer Service.
016-190_01
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