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Error code reference

Fisher & Paykel Dishwasher Error Code FC1

Wash controller communications fault

Fisher & Paykel codesFisher & Paykel dishwasher codes

Wash controller communications fault - communication failure between wash controller and motor controller.

First step from the service manual

Run a rinse cycle on both tubs to check if the product operates correctly.

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

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What FC1 means on a Fisher & Paykel dishwasher

The FC1 error code on a Fisher & Paykel dishwasher indicates a communications fault between the wash controller and the motor controller. These two control boards must exchange data continuously during operation to coordinate pump speed, water circulation, and cycle timing. When that communication link breaks down or becomes unreliable, the wash controller logs FC1 and may halt the current cycle to prevent uncontrolled operation.

This fault is specific to Fisher & Paykel's dual-drawer dishwasher architecture, where each tub contains its own motor and control system. The communication pathway between the wash controller and motor controller typically runs over a dedicated wiring harness with connector points that can corrode, loosen, or sustain physical damage over time. A failure in this pathway prevents the wash controller from receiving motor status feedback or sending cycle commands.

The first diagnostic step recommended is to run a rinse cycle on both tubs to determine whether the fault is consistent or intermittent. If one tub completes the rinse cycle normally while the other triggers FC1, the fault can be isolated to the hardware associated with the affected tub. Intermittent faults often point to loose connectors or damaged wiring, while a persistent FC1 on every cycle is more likely to indicate a failed control board or motor controller.

Source: manufacturer service documentation.

Common causes of FC1

  1. 01

    Loose or corroded wiring connector

    Wiring / connection

    The connector linking the wash controller to the motor controller can work loose over time or develop corrosion on the terminals. Inspecting and reseating the connector, or cleaning corroded pins, is the first physical check to perform.

  2. 02

    Damaged wiring harness

    Part replacement

    The wiring harness between the two controllers can be pinched, chafed, or broken, interrupting the communication signal. Trace the harness visually and check for any signs of wear, kinking, or damage near mounting points.

  3. 03

    Failed motor controller board

    Part replacement

    If the motor controller board has failed internally, it will not respond to signals from the wash controller, triggering FC1. A persistent fault that survives connector checks and harness inspection points toward a board-level failure.

  4. 04

    Failed wash controller board

    Part replacement

    The wash controller itself can fail, losing the ability to initiate or maintain communication with the motor controller. This is typically considered after the motor controller and wiring have been ruled out.

  5. 05

    Intermittent power supply issue

    Wiring / connection

    An unstable power supply to one of the controllers can cause communication dropouts that register as FC1. Check that the dishwasher is receiving stable voltage and that no circuit breaker is partially tripped.

See the test procedure for each cause

Frequently asked questions about FC1

What does FC1 mean on a Fisher & Paykel dishwasher?
FC1 indicates a communication failure between the wash controller and the motor controller inside the dishwasher. These two boards need to continuously exchange data for the appliance to run correctly. When that communication breaks down, the dishwasher logs FC1 and stops the cycle. The fault can be caused by loose wiring, a damaged harness, or a failed control board.
Can I fix the FC1 error myself?
Some FC1 faults are caused by loose wiring connectors, which a confident DIYer can address by locating and reseating the connector between the wash controller and motor controller. However, if the fault persists after checking the wiring, the repair likely involves replacing a control board, which requires disassembly and comfort working around electrical components. If you are not experienced with appliance repair, a qualified technician is the safer choice.
Will resetting the dishwasher clear the FC1 error?
A reset may temporarily clear the FC1 code if the fault was caused by a brief power fluctuation or a momentary communication dropout. However, if the underlying cause is a damaged wiring harness or a failed control board, the code will return as soon as the dishwasher attempts to run again. Fisher & Paykel recommends running a rinse cycle on both tubs after a reset to confirm whether the fault is truly resolved.
Is it safe to use my Fisher & Paykel dishwasher with the FC1 error showing?
The dishwasher is designed to stop operation when FC1 is detected, so continuing to force cycles is not recommended. Running the appliance with an unresolved controller communication fault could result in the motor operating outside expected parameters. It is best to diagnose and resolve the fault before resuming regular use.
How much does it cost to repair the FC1 error on a Fisher & Paykel dishwasher?
Repair costs vary depending on the root cause. If only a connector needs reseating or a harness needs replacing, costs are generally in the range of $50 to $150 for parts and labor. If a control board needs to be replaced, total repair costs including labor typically fall in the range of $200 to $450 depending on which board has failed and local labor rates. Getting a diagnostic assessment from a technician before committing to parts is advisable.

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