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Error code reference

Fisher & Paykel Washer Error Code 108

Phase 6 IW

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Phase 6 IW: Communications CRC error on Display. See fault code 106.

First step from the service manual

See fault code 106 procedure.

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

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What 108 means on a Fisher & Paykel washer

Error code 108 on a Fisher & Paykel washer indicates a Communications CRC (Cyclic Redundancy Check) error on the display module, occurring during Phase 6 of the IW (Intuitive Washer) control sequence. A CRC error means that data being transmitted between the main control board and the display module is becoming corrupted in transit. The receiving component performs a checksum calculation on the incoming data packet and detects that the result does not match the expected value, signaling that the communication link has broken down or is unreliable.

This type of error is fundamentally a communication fault rather than a mechanical one. The data path between the main controller and the display panel relies on a stable, noise-free connection. When wiring harnesses become loose, corroded, or damaged, or when a control board or display module begins to fail internally, the serial data stream can degrade to the point where CRC validation fails consistently. Intermittent connection problems are a common trigger.

Because error code 108 is closely related to error code 106, the diagnostic procedure for fault code 106 applies directly here. Code 106 covers the broader Communications CRC error framework for the display, and the steps outlined there address the same root causes. Technicians should begin diagnosis by following the fault code 106 procedure, which will direct inspection of the wiring harness connections between the display and main board, as well as evaluation of both the display module and the main control board itself.

Source: manufacturer service documentation.

Common causes of 108

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    The connector linking the display module to the main control board may have worked loose over time due to vibration. Inspect all harness connectors at both ends for secure seating and signs of looseness.

  2. 02

    Corroded or damaged harness connector pins

    Part replacement

    Moisture or age can cause corrosion on the connector pins in the communication wiring harness, increasing resistance and degrading the data signal. Look for discoloration, oxidation, or bent pins at the connector terminals.

  3. 03

    Faulty display module

    Part replacement

    The display module itself may have an internal failure that prevents it from correctly receiving or processing the data signal from the main board. If wiring checks out, the display module is a primary suspect.

  4. 04

    Faulty main control board

    Part replacement

    If the main control board is unable to transmit a clean data signal to the display, CRC errors will result consistently. This is typically diagnosed after ruling out wiring and display module issues.

  5. 05

    Electrical interference or power supply instability

    Wiring / connection

    Voltage fluctuations or electrical noise on the power supply can disrupt communication between boards. Verify the washer is on a stable, properly grounded circuit and check for other high-draw appliances sharing the same circuit.

See the test procedure for each cause

Frequently asked questions about 108

What does 108 mean on a Fisher & Paykel washer?
Error code 108 indicates a Communications CRC error on the display module, detected during Phase 6 of the washer's control cycle. CRC stands for Cyclic Redundancy Check, which is a method the control system uses to verify that data transmitted between the main board and the display arrived correctly. When this check fails, it means the communication link between those two components is unreliable. The diagnostic procedure for this code follows the same steps as fault code 106.
Can I fix error code 108 myself?
Some of the initial checks, such as inspecting wiring harness connectors for looseness and ensuring the machine is on a stable power circuit, can be performed by a confident DIYer. However, if the connectors appear intact and the error persists, diagnosing and replacing the display module or main control board typically requires technical knowledge and access to service procedures. Following the fault code 106 diagnostic procedure is the recommended starting point.
Is it safe to use my washer when error code 108 appears?
It is generally not recommended to continue running the washer while this error is active. A communication failure between the display and main control board means the machine may not be able to accurately convey its operating status or respond to commands as expected. Continuing to operate it could lead to incomplete cycles or mask other developing issues.
Will resetting the washer clear error code 108?
A power reset may temporarily clear the error and allow the machine to attempt another cycle, but if the underlying cause such as a wiring fault or failing component is still present, the error will return. A reset is not a fix. Proper diagnosis following the fault code 106 procedure is needed to resolve the root cause.
How much does it cost to repair error code 108 on a Fisher & Paykel washer?
Repair costs depend on which component is at fault. If the issue is simply a loose connector, the cost may only involve a service call fee, typically in the range of $75 to $150. Replacing a display module or main control board can bring total repair costs to somewhere between $200 and $500 or more, depending on parts pricing and labor rates in your area.

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