786-93885 10 of 14 6/6/22
TROUBLESHOOTING GUIDE
Pump is not plugged into
electrical box
Plug pump into electrical box
Circuit breaker is tripped
Check breaker and correct. If
problems persist, contact Graymills.
Pump runs but does
not pump fluid
Pump filter screen is
clogged
Clear debris from around pump
Flexible plastic hose is
clogged
Pump rubber discharge
hose clogged
Clear debris from hose or replace hose
Pump runs but does
not pump fluid
(external filter units)
Canister filter is clogged
Pump runs but is
noisy (Some noise
is normal).
Cavitation due to low
liquid level
Raise liquid level to correct level
Light is not plugged into
electrical box
Plug lamp into electrical box
Circuit breaker is tripped
Check breaker and correct. If
problems persist, contact Graymills.