headline bars
continuation tabs
notes
warnings
17
TROUBLESHOOTING
Problem Possible Causes Corrective Action
Pump does not run
when water flows in
from the sink.
1. The pump is unplugged.
2. There is no power to the outlet.
3. The pump impeller is jammed.
4. The sink stopper is in the drain.
5. Insufficient level of water above
the diaphragm switch.
1. Plug in the pump.
2. Check the fuse/breaker.
3. Unplug the pump and follow the
procedure under “Care and Cleaning” to
clear the pump.
4. Remove stopper.
5. Check the installation per Figure 2.
Pump runs but does
not empty the sink.
1. The drain is clogged.
2. The discharge line is clogged.
3. The shut-off valve is closed.
4. The system discharge line is too
high or too long.
5. The check valve is installed
backwards.
1. Clear the drain screen.
2. Unplug the pump. Then open and clear
discharge line.
3. Open shut-off valve slightly.
4. Unplug the pump or reduce the height or
length of the discharge line (11’/3.35 m
max. height).
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.
2. Check valve is jammed.
1. Unplug the pump and install the check
valve (see Figures 2 and 3).
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.
2. Shut-off valve is not installed.
1. See “Adjusting the Flow”.
2. Unplug the pump and install a shut-off
valve (see Figures 2 and 3).
TROUBLESHOOTING
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