Cod Description Cause Remendy
Pump
status
E04 Mains undervoltage Power supply too low on mains side Check mains voltage. OFF
E05 Mains overvoltage Power supply too high on mains side Check mains voltage. OFF
E07 Generator operation
Pump hydraulics have fluid running
through them.
Check the system ON
E09 Turbine operation The pump is driven in reverse
Check flow, install non-return valves
if necessary
OFF
E10 Blocking The rotor is blocked Request customer service OFF
E11 Dry running Air in the pump
Check system charge (pressure and
volume)
ON
E21 Overload Sluggish motor Request customer service ON
E23 Short-circuit Motor current too high Request customer service OFF
E25 Contacting/winding Defective Request customer service OFF
E30 Module overheated Check operating conditions OFF
E31 Overheated power section Ambient temperature too high Check operating conditions OFF
E36 Electronic faults Request customer service OFF
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