Troubleshooting Chart - Pentair IntelliFlo Installation And User Manual

Troubleshooting Chart

Problem
Pump failure.
(For alert display
messages, refer to Alerts
and Warnings on page 22).
Reduced capacity and/
or head.
(For alert display
messages, refer to Alerts
and Warnings on page 22).
Inadequate circulation.
(For alert display
messages, refer to Alerts
and Warning on page 22).
Possible Cause
Pump will not prime - Air leak in suction.
PRIME ERROR may be displayed.
Pump will not prime - Not enough water.
Pump does not come out of priming mode.
Pump completes priming mode too early, and/or
there is still a large amount of air in the housing
Pump stainer basket is clogged.
Pump strainer gasket is defective.
Air pockets or leaks in suction line.
PRIMING FAILURE may be displayed.
Clogged impeller.
PRIMING FAILURE may be displayed.
Pump strainer pot clogged.
PRIMING FAILURE may be displayed.
Filter or pump basket dirty.
Suction/discharge piping is too small.
Speed is set too slow for proper filtration cycle.
Corrective Action
Check suction piping and valve glands on any
suction gate valves. Secure lid on pump strainer pot
and be sure lid gasket is in place. Check water level
to be sure skimmer is not drawing air.
Be sure the suction lines, pump, strainer, and pump
volute are full of water.
Adjust priming range to a higher setting
(default setting is 5).
Adjust priming range to a lower setting
(default setting is 5).
Clean pump strainer pot.
Replace gasket.
Check suction piping and valve glands on any
suction gate valves.
Turn off electrical power to the pump.
Remove the (6) bolts that holds the housing (strainer
pot/volute) to seal plate. Slide the motor and seal
plate away from the volute.
Clean debris from impeller. If debris cannot be
removed, complete the following steps:
1. Remove diffuser and o-ring.
2. Remove reverse-thread impeller screw and o-ring.
3. Remove, clean and reinstall impeller.
4. Reinstall reverse-thread impeller screw and o-ring.
Reinstall diffuser, and o-ring.
Reinstall motor and seal plate into volute.
Reinstall seal plate nuts and volute and tighten
securely.
Clean suction trap.
Clean pump strainer pot.
Check trap basket; if plugged, turn pump off and
clean basket.
Check and clean pool filter.
Increase piping size.
Increase filtration run time.
INTELLIFLO Variable Speed Pump Installation and User's Guide
®
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