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Troubleshooting
Error
No mains voltage available
Main power circuit breaker has tripped
Connection cable damaged
Pump is not running
Float switch defective
Overheating
Incorrect
Float switch blocked
Level detected,
Multi-vane
Soiling, solids have become lodged between
impeller blocked
the multi-vane impeller and the spiral housing.
Intake cage blocked
Spiral housing is worn
Reduced performance
Multi-vane impeller worn
Ventilation pipe blocked
Cause
Installation and operating instructions
Remedial measures
Check mains voltage
Switch circuit breaker on again
Repair only by qualified electricians/service
partners
Have components replaced by a qualified elec-
trician
Submersible pump switches back on again
automatically when the temperature has
dropped again
Clean the float switch, carry out maintenance if
necessary
Clean the pump (maintenance)
Clean the pump (maintenance)
Replace the spiral housing
Replace multi-vane impeller
Clean ventilation opening
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