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Error code reference

Fisher & Paykel Refrigerator Error Code F40

Icemaker solenoid Transistor 1 Short Circuit

Fisher & Paykel codesFisher & Paykel refrigerator codes

Icemaker solenoid Transistor 1 Short Circuit. A transistor on the controller that drives the icemaker solenoid has failed.

First step from the service manual

Check the solenoid resistance. If not within limits, replace the solenoid. Check the wiring and connections at the solenoid and the module. If OK, replace the control module.

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

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What F40 means on a Fisher & Paykel refrigerator

The F40 error code on a Fisher & Paykel refrigerator indicates a short circuit condition in the transistor that drives the icemaker solenoid. This transistor is located on the control module and acts as an electronic switch, controlling current flow to the solenoid that governs ice production. When the transistor fails in a short circuit state, the controller detects an out-of-range condition and triggers this fault code to prevent further damage to the board or connected components.

The icemaker solenoid itself is a common root cause of this fault. If the solenoid winding has failed internally and presents a resistance value outside of acceptable limits, it can draw excessive current through the transistor, causing it to short. Wiring faults between the control module and the solenoid, including chafed insulation, pinched conductors, or corroded connector pins, can also create a low-resistance path that mimics a shorted load and stresses the transistor.

Diagnosing F40 requires starting at the solenoid: measure its resistance and compare it against the specified range. A reading that is too low points to a failed solenoid that should be replaced before any board work is done. If solenoid resistance is within limits and all wiring and connector integrity checks pass, the fault is internal to the control module itself, and the module will need to be replaced to restore normal icemaker operation.

Source: manufacturer service documentation.

Common causes of F40

  1. 01

    Failed icemaker solenoid

    Part replacement

    The solenoid winding can short internally, presenting a resistance value outside acceptable limits. This draws excess current through the transistor and is the most likely cause of F40.

  2. 02

    Shorted control module transistor

    Part replacement

    If the solenoid and all wiring check out correctly, the transistor on the control module itself has failed internally. The entire control module must be replaced in this case.

  3. 03

    Damaged wiring or connectors

    Wiring / connection

    Chafed, pinched, or corroded wiring between the control module and the solenoid can create a low-resistance fault path that triggers this code. Inspect all connectors and harness routing for visible damage or corrosion.

  4. 04

    Loose or corroded connector at the solenoid

    Wiring / connection

    A poorly seated or oxidized connector at the solenoid can cause intermittent resistance readings that stress the transistor. Disconnect, inspect, and reseat the connector to rule this out.

See the test procedure for each cause

Frequently asked questions about F40

What does F40 mean on a Fisher & Paykel refrigerator?
F40 indicates a short circuit in the transistor on the control module that drives the icemaker solenoid. The fault can originate in the solenoid itself, the wiring between the solenoid and the module, or the module's internal transistor. Ice production will typically stop when this code is active. Diagnosis involves checking solenoid resistance and wiring before replacing any components.
Can I fix F40 on my Fisher & Paykel refrigerator myself?
A knowledgeable DIYer can perform basic checks such as inspecting wiring and connectors at the solenoid for visible damage or corrosion. Measuring solenoid resistance with a multimeter is also within reach for many DIYers. However, replacing the control module involves working with the main electronics of the refrigerator and is generally better handled by a qualified technician to avoid further damage.
Will resetting my Fisher & Paykel refrigerator clear the F40 code?
A reset may temporarily clear the F40 code, but it will return if the underlying fault is not repaired. The transistor short circuit or solenoid failure that triggered the code remains until the defective component is replaced. Resetting without repair is not a solution and could delay identifying the problem.
Is the F40 error code on a Fisher & Paykel refrigerator a safety concern?
F40 is not typically a safety hazard in the way that a gas or electrical shock risk would be, but leaving it unaddressed can cause ongoing stress to the control module. A shorted solenoid drawing continuous excess current could potentially cause broader board damage over time. Addressing the fault promptly protects other components from secondary failure.
How much does it cost to repair the F40 error on a Fisher & Paykel refrigerator?
Repair costs vary depending on the root cause. Replacing the icemaker solenoid is generally the less expensive fix, while replacing the control module is more costly. Parts and labor combined can range from roughly $150 to $500 or more depending on your region and the specific parts required. Getting a technician diagnosis first helps avoid paying for the wrong component.

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