Grundfos SRG Installation And Operating Instructions Manual page 21

Fault
5. High current and
power
consumption.
Cause
a) Wrong voltage supply or supply
failure.
b) Power supply cable is faulty.
c) Control system is faulty.
d) Impeller cannot rotate freely.
e) Stator windings are faulty.
f) Pump runs on two phases.
g) Internal parts are worn.
h) Faulty motor or gearbox roller
bearings.
Remedy
Call an electrician.
Call an electrician.
Call an electrician.
Clean the impeller and check manually
that it can rotate freely.
Contact Grundfos.
1. Check the electrical connections.
2. Replace faulty fuses.
3. Call an electrician.
Contact Grundfos.
Contact Grundfos.
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