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Error code reference

Fisher & Paykel Washer Error Code F1

The flood switch has been activated, indicating a leak in the base of the dishwasher, a fill valve failed…

Fisher & Paykel codesFisher & Paykel washer codes

The flood switch has been activated, indicating a leak in the base of the dishwasher, a fill valve failed open, a faulty flood switch, or excessive water added to a wash sub cycle indicating leaking seal or siphoning.

First step from the service manual

Check for a leak in the base of the dishwasher.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F1 means on a Fisher & Paykel washer

The F1 error code on a Fisher & Paykel washer indicates that the flood switch has been activated. The flood switch is a safety sensor located in the base pan of the machine. When water accumulates in the base pan beyond a normal threshold, this switch trips and halts operation to prevent further water damage. The code is the machine's way of communicating that water has reached a location where it should not be present.

There are several possible causes for the F1 code. A physical leak anywhere in the tub, hoses, door seal, or internal plumbing can allow water to drip down into the base pan over time. A fill valve that has failed in the open position will continuously allow water to enter, eventually overwhelming the system and causing overflow or leakage. A faulty flood switch that triggers without the presence of actual water is also possible, though less common than a genuine leak.

Another specific cause involves excessive water being detected during a wash sub cycle, which points to either a leaking internal seal or a siphoning condition. Siphoning occurs when the drain hose is not positioned correctly, allowing water to be drawn back into the drum or base through an uncontrolled siphon effect. Inspecting the base of the machine for standing water should always be the first step, as visible pooling immediately confirms an active leak rather than a faulty sensor.

Source: manufacturer service documentation.

Common causes of F1

  1. 01

    Active leak in the base of the machine

    Part replacement

    Water from a failed hose, cracked tub, or loose connection has pooled in the base pan and triggered the flood switch. Pull the machine away from the wall and inspect the base pan for standing water.

  2. 02

    Leaking door or tub seal

    Part replacement

    A worn or damaged door gasket or internal tub seal can allow water to escape during a wash cycle, gradually accumulating in the base. Look for water trails or residue on the inside of the outer cabinet.

  3. 03

    Fill valve failed in the open position

    Part replacement

    If the fill valve does not close properly, water continues to enter the machine even when it should stop, eventually causing overflow into the base pan. This will often be accompanied by excessive water in the drum.

  4. 04

    Siphoning through the drain hose

    Wiring / connection

    Incorrect drain hose routing or positioning can create a siphon that draws water back into the machine during or after a cycle, triggering the flood switch. Check that the drain hose is installed at the correct height and has an air break as required.

  5. 05

    Faulty flood switch

    Part replacement

    In some cases the flood switch itself can malfunction and trigger the F1 code even when no water is present in the base pan. This should only be suspected after a thorough inspection confirms the base pan is completely dry.

See the test procedure for each cause

Frequently asked questions about F1

What does F1 mean on a Fisher & Paykel washer?
The F1 code means the flood switch in the base of the machine has been activated. This switch is a safety sensor that detects water accumulating in the base pan where it should not be. The most common reasons include a physical leak, a fill valve stuck open, a faulty seal, or a siphoning drain hose. The machine stops operation automatically to prevent water damage.
How do I fix the F1 error on my Fisher & Paykel washer?
Start by inspecting the base of the machine for standing water and identifying where the leak is coming from. Check hoses, door seals, and internal connections for damage or looseness. If siphoning is suspected, verify that the drain hose is routed and positioned correctly. Once the underlying cause is repaired and the base pan is dry, the error should clear.
Is it safe to keep using my washer when the F1 code is displayed?
No, you should not continue running the washer while the F1 code is active. The code indicates water has entered the base pan, and continuing to operate the machine could worsen the leak, damage flooring, or create an electrical hazard. Turn off the water supply to the machine and address the source of the water before resuming use.
Will resetting my Fisher & Paykel washer clear the F1 code?
A reset may temporarily clear the code, but it will return as soon as the flood switch is triggered again if the underlying problem has not been fixed. The root cause, whether a leak, faulty valve, or siphoning condition, must be identified and corrected. Simply resetting the machine without repairing the issue is not a reliable solution.
How much does it cost to repair a Fisher & Paykel washer showing F1?
Repair costs vary depending on the cause. A drain hose repositioning or tightening a loose hose connection may cost little to nothing if done yourself. Replacing a door seal or fill valve typically costs between $80 and $250 in parts and labor depending on your location and the technician's rates. A faulty flood switch replacement is generally on the lower end of that range, while internal seal or tub repairs can run higher.

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