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Error code reference

Fisher & Paykel Cooktop Error Code F12.6

Fan voltage out of range

Fisher & Paykel codesFisher & Paykel cooktop codes

Fan voltage out of range - ADC on master indicates fan voltage is either over or under allowable limits for 10 seconds (fan voltage >28V or <2V).

First step from the service manual

Check fan and fan circuit on main PCB.

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

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What F12.6 means on a Fisher & Paykel cooktop

F12.6 is a fan voltage fault on Fisher & Paykel induction or electric cooktops. The master PCB continuously monitors the voltage supplied to the cooling fan through its onboard analog-to-digital converter (ADC). When that measured voltage falls outside the allowable operating window, specifically above 28V or below 2V, for a sustained period of 10 seconds, the control system logs F12.6 and typically halts operation to prevent damage from inadequate cooling.

The cooling fan is a critical safety component on these cooktops. It removes heat from the power electronics and main PCB during operation. If the fan voltage signal reads out of range, the cause may be a wiring fault in the fan circuit, a failed fan motor drawing abnormal current, a short or open circuit in the fan harness, or a faulty main PCB that is either supplying incorrect voltage or misreading the ADC feedback. Connector corrosion or a loose terminal at the PCB fan header can also cause the voltage to drop below the 2V threshold.

Diagnosis should begin at the fan and its associated circuit on the main PCB. Technicians should inspect the fan wiring harness for damage, check connector integrity, and measure the actual voltage at the fan connector with a multimeter during operation to confirm whether the fault is in the supply voltage from the PCB or in the fan motor itself. If voltage at the connector is within spec but the error persists, the ADC circuitry on the main PCB is likely faulty and the board will need replacement.

Source: manufacturer service documentation.

Common causes of F12.6

  1. 01

    Faulty or failed cooling fan motor

    Part replacement

    A seized or failing fan motor can draw abnormal current, causing the voltage at the fan circuit to drop out of range. Check if the fan spins freely by hand and verify it runs when powered.

  2. 02

    Damaged or disconnected fan wiring harness

    Wiring / connection

    A broken wire, loose connector, or chafed harness between the fan and the main PCB can cause the voltage to read below 2V or disappear entirely. Inspect the full length of the harness and all connector pins.

  3. 03

    Corroded or loose connector at main PCB

    Wiring / connection

    Corrosion or a partially seated connector at the fan header on the PCB can introduce enough resistance to pull the voltage signal below the allowable threshold. Clean the connector and reseat it firmly before further diagnosis.

  4. 04

    Main PCB supplying incorrect fan voltage

    Part replacement

    If the PCB is outputting a voltage above 28V or below 2V at the fan connector, the board itself is defective. Confirm with a multimeter reading at the fan header during operation.

  5. 05

    Faulty ADC on main PCB

    Part replacement

    If the fan and its wiring test correctly but F12.6 persists, the analog-to-digital converter circuit on the master PCB may be misreading the actual fan voltage. In this case, the main PCB requires replacement.

See the test procedure for each cause

Frequently asked questions about F12.6

What does F12.6 mean on a Fisher & Paykel cooktop?
F12.6 indicates that the cooling fan voltage is out of the allowable range. The main PCB monitors fan voltage through its ADC, and if the reading stays above 28V or below 2V for 10 seconds, this fault is triggered. The cooktop stops operating to protect the electronics from heat damage caused by inadequate cooling.
Can I fix F12.6 myself, or do I need a technician?
Some causes, such as a loose connector or a disconnected fan harness, can be addressed by a confident DIYer who is comfortable working with appliance electronics. However, diagnosing whether the fault lies in the fan motor, the wiring, or the main PCB requires a multimeter and knowledge of how to safely access the cooktop internals. If the main PCB needs replacement, professional service is strongly recommended.
Is it safe to keep using my cooktop when F12.6 is displayed?
No. The cooling fan protects the power electronics and main PCB from overheating during use. Operating the cooktop without a functioning fan circuit risks permanent damage to internal components and could create a fire or electrical hazard. The cooktop should remain off until the fault is diagnosed and resolved.
Will resetting the cooktop clear the F12.6 error?
A power cycle may temporarily clear the error display, but if the underlying fault in the fan or fan circuit is still present, F12.6 will return within 10 seconds of the condition recurring. Resetting is useful for confirming whether the fault is intermittent, but it does not fix the root cause.
How much does it cost to repair a Fisher & Paykel cooktop showing F12.6?
Repair costs depend on the failed component. A replacement cooling fan typically costs between $30 and $80 in parts, while a new main PCB can range from $150 to $400 or more depending on the model. Adding a technician's labor, total repair costs generally fall somewhere between $100 and $500, with PCB replacement representing the higher end of that range.

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