Franklin Electric · Sump / Well Pump error code

F27Pressure transducer signal out of range

Cross-checked High-voltage / caution

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Related diagnostic guides

Guide · Sump / Well Pump

Well pump runs nonstop and never reaches cut-out pressure

The pump cannot build enough pressure to open the pressure switch, either because water is escaping (leak, running fixture, failed check valve), the pump is worn or has lost prime, the well cannot keep up, or the cut-out is set above what the pump can make. Running dry can ruin the pump, so act quickly.

5 steps ~60 minadvanced

Guide · Sump / Well Pump

Well pump short cycling (waterlogged tank / pressure switch)

Short cycling is usually a pressure tank that has lost its air charge (waterlogged) or a precharge set wrong for the switch. It wears out the pump motor and pressure switch quickly.

5 steps ~60 minmoderate

Guide · Sump / Well Pump

Air spitting or sputtering from faucets on a well system

Air in a well system usually enters because the pump is drawing down the well (low water level) or because a leak or failed check valve lets the line drain back and suck air in when the pump stops. A failed pressure-tank bladder can also send air into the lines.

4 steps ~45 minmoderate