10
Lowes.com
®
TrOubLesHOOTiNG
PrObLem
POssibLe cAuse
cOrrecTive AcTiON
Pump won’t start
or run
1. Tripped breaker
2. Low line voltage
3. Defective motor
4. Impeller
1. Reset breaker
2. If voltage under recommended
minimum, check size of wiring
from main switch on property. If
OK, contact power company
3. Replace pump
4. Remove base and screen, locate
source of binding
Pump operates but
delivers little or no
water
1. Low line voltage
2. Something caught in impeller
3. Small diameter garden hose or long
discharge line
4. Check valve installed without vent
hole
5. Airlock
6. Coils or bends in hose
1. Call power company
2. Clean out impeller
3. Use larger diameter garden hose
or 1 in. flexible pipe. Eliminate any
excess hose. Short hoses work
best
4. Drill a 1/16 in. - 1/8 in. (1.6-
3.2 mm) hole between pump
discharge and check valve
5. Turn off pump for a few seconds,
clean out anti-airlock hole and
restart pump
6. Straighten hose
risk of electrical shock and sudden starts.
Can shock, burn or kill. Can cause electrical
shock and personal injury. Disconnect electrical power to pump before attempting to troubleshoot or
work on it.
