SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
No water is pumped No supply water Open supply valve
Automatic Valve doesn’t open Check valve operation manually, replace valve
Float sunk or stuck Check float for free action, obstructions
Ejector is plugged Clean ejector
Inlet screen is plugged Clean inlet screen
Water level has dropped below Adjust the float rod stops to shut off pump before water has
inlet screen level dropped below screen level
Primary sump pump check Install or clean check valve in primary pump discharge
valve stuck open or not installed
Discharge line plugged Inspect and clean all pipes in system
Pump is trying to exceed rated lift Reduce height of discharge (see “Performance Chart,” page 2).
DO NOT try to exceed lift heights shown
Water supply is below 40 PSI Install a larger pipe (3/4” or 1”) from city water supply
Water Supply is a well system Pump requires continuous pressure to operate - it will not operate
if supply is from a well pump
Pump operates at less Supply water flow is restricted Open supply valve completely, make sure automatic valve is
than full capacity fully open and operating correctly
Pump suction or pump’s ejector Clean as needed
partially plugged
No primary pump check valve Install a check valve in primary pump’s discharge
Primary pump’s check valve leaks Replace primary pump’s check valve
Discharge line partly plugged Clean out pipe
Pump operates continuously, Automatic valve sticking open Manually check operation of automatic valve
doesn’t shut off
Float is stuck in “ON” position Clear obstructions
Rod stops are incorrectly set Adjust position of rod stops on the float rod to
allow correct valve operation
Repair Parts 15
Part Description Qty. Part No.
Valve 1 FP302200
Hose 1 FP314220
Float Rod Section 3 FP302210
Model FP480WBU
TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE
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