Symptom Possible Causes
Pump fails to shut o
after all xtures are
closed
Empty water tank
Insucient voltage to pump (low battery)
Punctured pump diaphragm (pump leaks)
Discharge line leak
Defective pressure switch
Low ow and pressure
Air leak at pump intake
Accumulation of debris inside pump and plumbing
Worn pump bearing (excessive noise)
Punctured pump diaphragm (pump leaks)
Defective motor
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