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FHP Pumps | Installation & Operation Manual
Jandy
®
Section 6. Troubleshooting
Zodiac Pool Systems LLC strongly recommends that you call a qualified service technician to perform any repairs on
the pump system. To locate a qualified technician, check your local yellow pages or visit
www.zodiacpoolsystems.com and click on "Support."
6.1 Troubleshooting
Symptom
The cleaning/
circulating system is
not operating correctly.
Bubbles present in the
pump basket.
Air leaks are still
present.
There is no air in
the system, but the
pressure is still low.
There is no debris
blocking the impeller
and the pressure is
still low.
The pump is leaking
water between the
motor and pump body.
The pump gets hot and
shuts off periodically.
Verify that skimmer baskets, pump basket and other screens are clean. Clean as necessary.
If a filter is installed in the system, check the filter and clean as necessary.
Check valve positions. Adjust as necessary.
NOTE: Multiple pieces of equipment operating at one time (for example, waterfalls, spa jets, and
surface returns) may affect the cleaning system and prevent it from working properly.
Check cleaning system manual to ensure the system is adjusted according to manufacturer's
recommendations.
Air is in system. Check pool or spa water level to ensure it is at the proper level and air is not being
drawn into suction piping. If water is at normal level, turn off pump. Turn the lid's locking ring counter-
clockwise until 'START' aligns with ports. Remove lid and check for debris around lid seal seat or
improper installation of lid seal, as either of these conditions will cause air leaks in the system. Clean
lid seal and lid groove. Note that one (1) side of lid seal has two (2) ribs and the other has one (1).
Place the side with two (2) ribs into lid groove. Replace lid on pump housing. Align 'START' with ports
and turn lid's locking ring clockwise until 'LOCKED' aligns with ports. Hand-tighten the lid to make an
air tight seal. Do not use any tools to tighten the lid. Turn the pump back on.
Check the suction side piping union. While the pump is running, try to tighten the union. If this
does not stop the air leak, turn off the pump. Loosen both unions and slide the pump out of the
way. Remove, clean, and re-install both union o-rings.
Reposition the pump next to the piping and secure the union nuts to the pump. With clean union
o-rings, hand-tightening of the unions should create a seal. If the unions still do not seal, gently
tighten with a large pair of tongue-and-groove pliers.
Do not over-tighten.
It is possible that debris is caught in the pump impeller. The pump impeller moves the water, and
the vanes in the impeller can become blocked with debris.
1.
Turn off the pump. Switch off the circuit breaker to the pump motor.
2.
Remove the lid and basket.
3.
Look inside the pump for any debris. Remove any debris found inside.
4.
Replace the basket and lid.
5.
Switch on the circuit breaker to the pump motor.
6.
Turn on the pump, and see if the problem is solved.
7.
If the impeller is still blocked with debris and it is not possible to remove the debris using
Steps 2 through 4, the pump will need to be disassembled in order to access the inlet
and outlet of the impeller.
The pump impeller and diffuser are showing signs of normal wear. Have a qualified service
technician check the impeller and diffuser and replace as necessary.
If the pump is part of a relatively new installation, it could be an electrical problem. Contact a
qualified service technician. Have the technician check for loose electrical connections and
check the voltage at the pump motor while it is in operation. The voltage must be within 10% of
the motor's data plate rating. If the voltage is not within 10%, contact a qualified electrician and/
or the local power service provider.
This is caused by a damaged or failed mechanical seal. The pump seal is leaking air. Have a
qualified service technician replace the seal.
Ensure that there is adequate room around the motor to circulate air and keep motor cool. Have
a qualified electrician check for loose connections and check voltage at the pump motor while it
is in operation. The voltage must be within 10% of the motor's data plate rating. If voltage is not
within 10%, contact a qualified electrician and/or the local power service provider.
Possible Problem/Solution
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