Fault Finding
Before starting any work on the pump please ensure the
electricity supply is turned off and cannot be accidentally
switched back on at any time
Fault Control Panel Cause Remedy
Pump doesn’t
run at all
Light is off
A) One fuse is
blown
Replace fuse
B) The current/
voltage operated
circuit breaker
has tripped out
Cut in the
circuit break
C) The Pump is
defective
Replace Pump
Only shows power
A) Failure of
electricity supply,
might be too low
Check the
supply falls
within the
specified range
Noise in the
system
Light on for power
and pump settings
A) Air in the
system
Vent the
system
Reduce the
suction head
Noise in the
Pump
Light on for power
and pump settings
A) Air in Pump
Let the Pump
run, it vents
itself over time
Increase the inlet
pressure. Check
the air volume in
the expansion
tank if installed
B) Inlet pressure
is too low
Light on for power
and pump setting
A) Pump
perfomance is
too low
Increase the
suction head
Insufficient
B) The flow is
too high
