Softener keeps running water to drain (stuck in regeneration or leaking in service)

Flow to drain is normal only during a regeneration (usually about 1.5-2 hours, overnight). If it continues, either the valve is stuck in a regeneration position (power loss, stalled motor, seized piston) or worn piston seals are leaking service water to drain. Bypass first to stop the waste, then decide which it is.

Cross-checked ~60 min moderateBrands: Fleck (Pentair), Clack, Whirlpool, GE, All

Before you start

Unplugging does not stop a regeneration that is mid-cycle: use the bypass to stop the flow
Bypass and relieve pressure before opening the valve
The transformer plugs into 120 V: unplug before working on the board or motor

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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