Fisher & Paykel Refrigerator Error Code F40

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.

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.

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.

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.

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.