KitchenAid Washer Error Code F15

The F15 error code on a KitchenAid washer indicates that the control board has detected a system leak condition. The detection logic mirrors that of the FH fault: the machine either receives no water input when it expects fill activity, or the flow meter registers that 10.5 gallons have passed through the system without the pressure switch tripping to confirm water accumulation in the tub. This discrepancy signals that water is entering the machine but not building up to the expected level, pointing toward a leak somewhere in the water path.

The two primary components to evaluate first are the washer tub itself and the pressure switch hose. A cracked or punctured tub allows water to drain away before pressure can build, while a damaged, kinked, or disconnected pressure switch hose prevents the control from receiving an accurate signal about water level. Either condition causes the control board to interpret ongoing water loss as a leak event and triggers the F15 fault.

Beyond the tub and pressure hose, other components in the water circuit can contribute to this fault. A faulty flow meter that overcounts water volume, a water inlet valve that allows more water in than intended, or a drain path that is not fully sealed can all result in the flow sensor registering 10.5 gallons without a corresponding pressure switch response. Systematic inspection of the full water path, from inlet valves through the tub and hose connections to the pressure switch port, is necessary to isolate the root cause.