You may find the check valve on the pump may be leaking or there is a leak in the line. This all depends on what kind of system you have. Best test is to isolate outlet somewhere close to pump & see if pump stops. ( this is of course if you have a pressure switch control ), if so you may find your check valve on pump is leaking or you may fine there is a small leak in the line some where.
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You may find the check valve on the pump may be leaking or there is a leak in the line. This all depends on what kind of system you have. Best test is to isolate outlet somewhere close to pump & see if pump stops. ( this is of course if you have a pressure switch control ), if so you may find your check valve on pump is leaking or you may fine there is a small leak in the line some where.