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Error code reference

Fisher & Paykel Washer Error Code Err 12

Water level has exceeded the flood protection level.

Fisher & Paykel codesFisher & Paykel washer codes

Water level has exceeded the flood protection level.

First step from the service manual

Check that the pressure sensor hose is not kinked, pinched or cut and is connected to the air bell.

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

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What Err 12 means on a Fisher & Paykel washer

Err 12 on a Fisher & Paykel washer indicates that the water level inside the tub has risen above the programmed flood protection threshold. This is a safety-triggered fault, meaning the control board has detected water reaching a level considered dangerous for continued operation. The machine will stop the cycle to prevent overflow or water damage to the surrounding area and internal components.

The component responsible for monitoring water level is the pressure sensor, also called a pressure transducer or water level sensor. This sensor works by detecting air pressure changes in a sealed hose connected to an air bell at the bottom of the tub. As water rises, it compresses air in the hose, and the sensor reads that pressure to determine the water level. If the hose is kinked, pinched, cut, or disconnected from the air bell, the pressure readings become inaccurate. A disconnected or damaged hose can cause the sensor to read falsely low pressure, tricking the control board into thinking the tub is not filling, which leads the machine to continue adding water until flood protection triggers.

Beyond hose integrity issues, a faulty pressure sensor itself can send incorrect signals to the control board. A water inlet valve that is not closing properly can also allow water to continue entering the tub after the fill cycle should have ended. In some cases, a control board fault may misinterpret legitimate pressure readings and trigger this error incorrectly. Systematic inspection of the pressure hose path from the air bell to the sensor is the essential first step before replacing any components.

Source: manufacturer service documentation.

Common causes of Err 12

  1. 01

    Kinked or pinched pressure sensor hose

    Wiring / connection

    The hose connecting the air bell to the pressure sensor can become kinked or pinched during installation or after the machine is moved. A restricted hose prevents accurate pressure readings, causing the machine to overfill and trigger flood protection.

  2. 02

    Pressure sensor hose disconnected from air bell

    Wiring / connection

    If the hose has come loose from the air bell fitting at the bottom of the tub, the pressure sensor loses its reference point and cannot accurately detect the water level. Inspect the connection point at the air bell and reseat the hose securely if it has pulled free.

  3. 03

    Cut or cracked pressure sensor hose

    Part replacement

    A hose that has been cut, cracked, or otherwise compromised will leak air pressure, causing false low readings that prompt the control board to keep filling the tub. Visually inspect the full length of the hose for any damage and replace it if found.

  4. 04

    Faulty pressure sensor

    Part replacement

    If the hose is intact and properly connected but Err 12 persists, the pressure sensor itself may be sending inaccurate signals to the control board. A defective sensor will require replacement to restore correct water level detection.

  5. 05

    Water inlet valve not closing properly

    Part replacement

    A water inlet valve that fails to close at the end of a fill cycle will allow water to continue entering the tub, eventually reaching the flood protection level. This is typically identified by water continuing to flow into the machine even when the control board has not commanded filling.

See the test procedure for each cause

Frequently asked questions about Err 12

What does Err 12 mean on a Fisher & Paykel washer?
Err 12 means the water level inside the washer tub has exceeded the flood protection threshold set by the control system. The machine shuts down automatically as a safety measure to prevent overflow. The fault is most often linked to a problem with the pressure sensor hose that monitors water level, such as a kink, disconnection, or damage.
How do I fix Err 12 on my Fisher & Paykel washer?
Start by locating the pressure sensor hose and tracing it from the air bell at the base of the tub to the pressure sensor. Check for any kinks, pinches, cuts, or loose connections and correct any issues you find. If the hose is intact and properly seated, the pressure sensor or water inlet valve may need to be tested and replaced. After making any corrections, reset the machine by powering it off and back on to see if the error clears.
Is it safe to use my Fisher & Paykel washer when Err 12 is displayed?
No, you should not attempt to run a wash cycle while Err 12 is active. The error indicates a potential overfill condition, and continuing to operate the machine could result in water overflowing onto the floor and causing damage to your home or the machine itself. Address the underlying cause before resuming use.
Will resetting my Fisher & Paykel washer clear the Err 12 code?
Powering the machine off and back on may temporarily clear the displayed error, but if the underlying cause has not been fixed, the code will return as soon as the machine attempts to fill again. A reset alone is not a repair. You need to inspect and correct the pressure hose connection or replace a faulty component before the fault will stay cleared.
How much does it cost to repair a Fisher & Paykel washer showing Err 12?
If the fix is simply reseating or straightening the pressure sensor hose, the repair can cost nothing beyond your time. If a replacement pressure sensor hose is needed, parts are generally inexpensive, typically in the range of $10 to $40. A faulty pressure sensor or water inlet valve replacement, including parts and labor from a technician, can range from $100 to $300 depending on your location and the specific parts required.

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