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TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
Pump will not
run when water
flows in from the
sink.
1. The pump is unplugged.
1. Plug in the pump.
2. There is no power to the outlet.
2. Check the fuse/breaker.
3. The pump impeller is jammed.
3. Unplug the pump and follow the
procedure under “Maintenance” to
clear the pump.
4. The sink stopper is in the drain.
4. Remove stopper.
Pump runs but
does not empty
the sink.
1. The drain is clogged
1. Clear the drain screen.
2. The discharge line is clogged.
2. Unplug the pump. Then open and
clear discharge line.
3. The shut-off valve is closed.
3. Open shut-off valve slightly.
4. The system discharge line is too high
or too long.
4. Unplug the pump or reduce the
height or length of the discharge
line (11 ft. max. height)
5. The check valve is installed backwards. 5. Make sure the flow arrow on the
check valve points away from the
pump.
Pump cycles on
and off when no
water is in the
sink.
1. Check valve is not installed.
1. Unplug the pump and install the
check valve.
2. Check valve is jammed.
2. Unplug the pump. Then open
the discharge line and clean the
check valve.
Pump cycles on
and off when
the sink is at
maximum water
flow or is full.
1. Shut-off valve is not adjusted.
1. See “Operation Instructions.”
2. Shut-off valve is not installed.
2. Unplug the pump and install a
shut-off valve.
RISK OF ELECTRIC SHOCK.
Always disconnect power source before attempting to install, service or maintain the pump. Never
handle a pump with wet hands or when standing on wet or damp surface or in water. Fatal electrical
shock could occur.
DANGER
