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Error code reference

Fisher & Paykel Washer Error Code 20

Phase 1

Fisher & Paykel codesFisher & Paykel washer codes

Phase 1: Display Module and Motor Controller running out of sequence.

First step from the service manual

Turn off at the wall and back on after 5 seconds. If fault persists disable auto restart and retest for new fault code.

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

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What 20 means on a Fisher & Paykel washer

Error code 20 on a Fisher & Paykel washer indicates a communication timing conflict between two core control systems: the Display Module and the Motor Controller. These two components are designed to initialize and operate in a specific, synchronized sequence. When one module powers up out of step with the other, or when communication between them falls out of sync during a cycle, the machine registers this fault and halts operation to prevent further issues.

The Display Module handles user interface inputs and relays commands to the Motor Controller, which drives the drum motor. For normal operation, these modules must handshake and exchange signals within tight timing windows. If either module boots too slowly, loses power momentarily, or experiences a firmware glitch, the sequencing can fall apart. This is often a transient condition caused by a brief voltage fluctuation or power interruption rather than a hard component failure.

The recommended first step is a hard reset: turn the machine off at the wall outlet, wait at least 5 seconds, then power it back on. This allows both modules to reboot together and attempt a fresh, synchronized startup. If the fault returns after the reset, the next step is to disable the auto-restart function and retest. A new fault code generated after disabling auto-restart will give a more specific indication of which underlying component or circuit is actually failing, narrowing the diagnosis considerably.

Source: manufacturer service documentation.

Common causes of 20

  1. 01

    Transient power fluctuation

    Wiring / connection

    A brief dip or interruption in household power supply can cause the Display Module and Motor Controller to power up out of sequence. This is the most common cause and is usually resolved by a full power cycle at the wall.

  2. 02

    Faulty or intermittent wiring harness connection

    Wiring / connection

    Loose or corroded connector pins between the Display Module and the Motor Controller can disrupt the communication signal, causing the modules to fall out of sync. Inspect the wiring harness and connectors between the two boards for damage or poor seating.

  3. 03

    Failing Display Module

    Part replacement

    If the Display Module is slow to initialize due to internal component degradation, it will repeatedly fail to sync with the Motor Controller at startup. A persistent error 20 after power cycling points toward this possibility.

  4. 04

    Failing Motor Controller

    Part replacement

    A Motor Controller that is slow to boot or drops communication intermittently can trigger this out-of-sequence fault. If disabling auto-restart and retesting produces a motor-related fault code, the Motor Controller is the likely culprit.

  5. 05

    Software or firmware glitch

    Wiring / connection

    In some cases, a one-time firmware error on either control board can cause an incorrect startup sequence without any hardware fault present. A successful power cycle with no return of the code suggests this was the cause.

See the test procedure for each cause

Frequently asked questions about 20

What does 20 mean on a Fisher & Paykel washer?
Error code 20 means the Display Module and Motor Controller started up out of sequence with each other. These two control boards must communicate in a specific order during startup, and when that timing is disrupted, the machine stops and displays this fault. It can be caused by anything from a brief power fluctuation to a failing control board.
Will resetting the washer clear error code 20?
Yes, in many cases a power cycle will clear error code 20, especially if the fault was caused by a transient power issue. Turn the machine off at the wall, wait at least 5 seconds, then turn it back on. If the code returns after the reset, the fault is likely related to a hardware problem that needs further diagnosis.
How do I fix error code 20 on my Fisher & Paykel washer?
Start by turning the washer off at the wall outlet and waiting 5 seconds before turning it back on. If the error persists, disable the auto-restart feature and run the machine again to see if a different fault code appears. That new code will give a more specific direction for diagnosing the faulty component, which may be the Display Module, Motor Controller, or the wiring between them.
Is error code 20 on a Fisher & Paykel washer a safety concern?
Error code 20 is not typically a safety hazard. The machine stops as a precaution when the control boards fall out of sync, which prevents uncontrolled motor operation. However, you should avoid repeatedly forcing the machine to restart without investigating the cause, as an underlying wiring or board fault left unrepaired could worsen over time.
How much does it cost to repair a Fisher & Paykel washer showing error code 20?
If a simple power reset clears the fault, there is no cost. If a control board needs replacement, parts alone can range from roughly 80 to 300 dollars depending on whether the Display Module or Motor Controller is at fault, with labor adding additional cost if a technician is required. Getting a precise diagnosis first by disabling auto-restart and checking for a secondary fault code can help avoid replacing the wrong component.

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