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Troubleshooting 7
For parts or assistance, call Simer Customer Service at 800-468-7867
Risk of electrical shock. Unplug the pump before touching it or servicing it.
Symptom Probable Cause(s) Corrective Action
Pump won’t start
or run.
Pump is not plugged in. Make sure the pump is plugged into a proper outlet.
Blown fuse. Replace the fuse with a fuse of proper size.
Low line voltage.
Check the size of the wiring on the circuit feeding the pump and
from the main switch on the property. If everything is OK, contact
your power company or hydro authority.
Defective motor. Replace the pump.
Defective float switch. Replace the float switch.
Clogged or jammed Impeller.
If the impeller won’t turn, unplug the pump, remove the lower
pump body, and locate the source of the binding. Replace the
impeller if necessary.
Pump starts and
stops too often.
Backflow of water from piping. Install or replace the check valve.
Faulty switch. Replace the switch.
Pump won’t
shut off.
Defective switch. Replace the switch, after first checking that switch is functional.
Restricted discharge (obstacle or
ice in the piping).
Unplug the pump, remove it from the sump, and clean the pump
and piping.
Restricted intake screen.
Unplug the pump, remove it from the sump, and clean the intake
screen and impeller.
Pump operates
but delivers little
or no water.
Low line voltage.
If the voltage is below 110 volts, check the size of the wiring
from the main switch on the property. If OK, contact your power
company or hydro authority.
Debris caught in the impeller. Remove the pump and clean out the impeller.
Worn or defective parts or
plugged impeller.
Clean the impeller if it’s plugged; replace the impeller if
necessary; otherwise replace the pump.
Check valve installed without
vent hole
Drill a 1/8” (3mm) dia. hole between the pump discharge and
the check valve (1-2” above 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 the check valve is installed correctly (the flow arrow
should point away from the pump).
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