Troubleshooting Guide
Symptom Cause Remedy
Pump must be primed; make
sure that the pump casing
and strainer are full of water.
Refer priming instructions.
Make sure there are no leaks
in suction piping.
Make sure suction pipe inlet
is well below the water level
to prevent pump from
sucking air.
Suction leaks / lost prime
Suction lift of 3 to 6 metres
will reduce performance.
Suction lift of more than 6
metres will prevent pumping
and cause pump to lose
prime. In either instance,
move the pump closer
(vertically) to water source.
Ensure that the suction pipe
diameter is large enough.
Ensure trap is not clogged
with debris; if it is, clean
strainer & basket.
Make sure that the impeller
is not clogged. This should
be checked by qualified
personnel only.
Impeller and diffuser may be
worn. If so, check with your
local Pentair dealer or suitably
qualified personnel.
Clogged pipe / strainer /
impeller, worn impeller.
Pump may be trying to push
too high a column of water. If
so, a “higher head” pump is
required.
No power at outlet. Use another electrical
appliance that is known to
work to check the power
outlet.
Blown fuse. Check fuse and replace if
necessary.
Motor burnt out due to
voltage spike or flooded by
water.
The motor may need
replacing.
Pump failure or reduced
capacity or reduced
discharge pressure.
Valves turned to the closed
position.
Check the plumbing to
ensure the valves are in the
correct position for pumping
on the suction and
discharge.
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