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TROUBLESHOOTING
The WhisperFlo VS 800 should only be serviced by certified Pentair service
agents. For best results and to ensure warranty is not void, insist on use of only
genuine Pentair service parts.
To avoid dangerous or fatal electrical shock hazard, turn OFF power to pump and
remove plug from power outlet before working on pump.
The power supply cord has a type 'Y' attachment and if service is required to
the power cord, it must be replaced with the specialised power cord assembly
by Pentair Water service agent or similarly qualified personnel in order to
avoid a hazard. Warranty is void if unauthorised modifications are made to any
component.
Troubleshooting Guide
SYMPTOM
Low water
pressure, low flow
from pump.
WhisperFlo VS 800 Owner' s Manual
14
CAUSE
Suction leaks / lost
prime.
Low speed setting.
Clogged pipe /
strainer / impeller /
filter system.
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 and ensure all o-rings are present
and clean.
• Make sure suctions pipe inlet is well below
the water level to prevent pump from
sucking air.
• 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.
• Check speed setting. Refer to speed
selection section of this manual. Reset to
default if necessary.
• Ensure trap is not clogged with debris;
clean basket and/or filter.
• Make sure that the impeller is not
clogged. This should be checked by
qualified personnel only.
• Pump may be trying to push too high a
column of water. If so, a higher pressure
pump is required.
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