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8
MY1016-R (06-23-20)
TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Pump won't start.
Pump not plugged in. Check that pump is plugged into 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.
Impleller.
If impeller won't turn, remove lower pump body and locate
source of binding.
Float obstructed. Remove obstruction.
Pump starts and stops frequently.
Backflow of water from piping. Install or replace check valve.
Faulty float switch. Replace float switch.
Pump won’t shut off
Defective float switch. Replace float switch.
Restricted discharge (obstacle or ice in piping). Remove pump and clean pump and piping.
Float obstructed. Remove obstruction.
Restricted intake screen Remove the pump and clean the intake screen and the impeller.
Pump operates but delivers little or no water.
Low line voltage.
If voltage under recommended minimum, check size of 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 plugged impeller. Clean impeller if plugged; otherwise replace pump.
Check valve installed without vent hole.
Drill a 1/16” - 1/8” (1.6mm-3.2mm) dia. hole between pump discharge
& check valve (1-2” above where the discharge pipe screws into the
pump discharge and below the waterline).
Restricted intake screen. Remove the pump and clean out the intake screen.
Check valve is installed either backward or upside
down.
Be sure check valve is installed correctly.
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