Fisher & Paykel Dishwasher Error Code F1

F1 indicates that the flood switch in the base of the dishwasher has been activated. This switch detects water that has escaped into the base pan beneath the main tub. The error stops the machine to prevent further water damage. Common causes include a failed fill valve, leaking seals, a damaged spray arm, or in some cases a faulty flood switch.

No, you should not continue running the dishwasher while F1 is active. The error indicates that water has reached an area where it can cause damage to your flooring, cabinetry, or the dishwasher's electrical components. The machine will typically halt operation automatically as a safety measure, and running it again before the issue is resolved could worsen the damage.

Repair costs vary depending on the root cause. Replacing a fill valve or flood switch typically falls in the range of $80 to $200 including parts and labor. A door seal replacement is generally in the $60 to $150 range. If the repair requires a service technician to diagnose and address multiple components, total costs could be higher. Getting a diagnostic assessment first is the best way to understand the scope of the repair.

Start by checking whether water is overflowing through the back air vent, which would point to a spray arm issue. Next, check the base pan for actual water accumulation and identify the source, such as a leaking hose, failed door seal, or stuck-open fill valve. The water in the base pan must be removed and the underlying cause repaired before the machine will clear the error. If the base pan is dry and the error persists, the flood switch itself may need to be tested or replaced.

A reset may temporarily clear the error code display, but F1 will return if the underlying cause has not been addressed. If water remains in the base pan or the component causing the leak has not been repaired, the flood switch will activate again as soon as the machine runs. Always resolve the root cause before attempting to reset and resume normal operation.