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Troubleshooting 4
SYMPTOM PROBABLE CAUSE(S) CORRECTIVE ACTION
Pump won’t start or run. Pump is not plugged in. Check and see if pump is plugged in to a proper outlet.
Blown fuse. If blown, replace with fuse of proper size.
Low line voltage. If voltage is under recommended minimum, check size of
wiring from main switch on property. If OK, contact power
company or hydro authority.
Defective motor. Replace pump.
Defective float switch. Replace float switch.
Impeller. If impeller won’t turn, remove lower pump body and locate
source of binding.
Float obstructed. Remove obstruction.
Pump starts and stops Backflow of water from piping. Install or replace check-valve.
too often.
Faulty float switch. Replace float switch.
Pump won’t shut off. Defective float switch. Replace float switch.
Restricted discharge Remove pump and clean pump and piping.
(obstacle or ice in piping).
Float obstructed. Remove obstruction.
Restricted intake screen. Remove the pump and clean the intake screen and the
impeller.
Pump operates but Low line voltage. If voltage is under recommended minimum, check size of
delivers little or no water. wiring from main switch on property. If OK, contact power
company or hydro authority.
Something caught in impeller. Remove the pump and clean out the impeller.
Worn or defective parts or Clean impeller if plugged; otherwise replace pump.
plugged impeller.
Check valve installed without Drill a 1/16 – 1/8" (1.6 mm – 3.2 mm) diameter hole between
vent hole. pump discharge & check valve.
Restricted intake screen. Remove the pump and clean out the intake screen.
Check valve is installed either Make sure check valve is installed correctly.
backward or upside down.
TROUBLESHOOTING CHART
Risk of electrical shock. Can burn or cause death. Unplug before servicing. Do not plug in or
unplug the pump while standing on a wet floor or in water.
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