mypros+
Error code reference

Fisher & Paykel Cooktop Error Code F9

Power button fault

Fisher & Paykel codesFisher & Paykel cooktop codes

Power button fault - Power button switch is closed for 15 seconds.

First step from the service manual

Check power button for sticking or mechanical failure.

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

MyPros+ Max

Get the full diagnostic procedure for F9.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F9 means on a Fisher & Paykel cooktop

The F9 error code on a Fisher & Paykel cooktop indicates a power button fault. Specifically, the cooktop's control system has detected that the power button switch has remained in a closed (activated) state for 15 continuous seconds. Under normal operation, a momentary press and release of the power button produces a brief switch closure. When the switch stays closed beyond the 15-second threshold, the control board interprets this as an abnormal condition and triggers the F9 fault to prevent unintended or unsafe operation.

The power button on these cooktops uses a momentary contact switch integrated into the touch or physical control panel. If the switch mechanism becomes mechanically stuck, contaminated with debris or liquid, or fails internally, it can hold the circuit closed indefinitely. The control board continuously monitors the signal from this switch, and the 15-second timer is a built-in safeguard against scenarios such as an object resting on the panel, a stuck button, or an electrical short within the switch assembly itself.

Diagnosing this fault begins with a physical inspection of the power button for any visible sticking, warping, or mechanical resistance. Liquid intrusion is a particularly common culprit on cooktops, as spills can seep beneath the control panel surface and cause a button to bind or create a conductive bridge that holds the switch in the closed position. If the button moves freely and no contamination is found, the fault may lie in the switch contact itself or the control board that interprets the signal.

Source: manufacturer service documentation.

Common causes of F9

  1. 01

    Sticky or mechanically stuck power button

    Wiring / connection

    The power button may be physically binding due to residue buildup, warping, or wear. Press and release the button several times to check for smooth, consistent movement with no resistance.

  2. 02

    Liquid or debris contamination under the control panel

    Wiring / connection

    Spills or grease that have seeped beneath the control surface can cause the button to stick or create an unintended electrical connection. Inspect the panel surface for moisture or residue around the button area.

  3. 03

    Failed power button switch contact

    Part replacement

    The internal switch contact within the button assembly can fail in the closed position even when the button appears to move freely. This requires replacement of the button switch or control panel assembly.

  4. 04

    Object resting on the control panel

    Wiring / connection

    A utensil, cloth, or other item left pressing against the power button can trigger the 15-second threshold. Remove anything on or near the panel and check if the error clears.

  5. 05

    Faulty control board

    Part replacement

    If the power button and switch assembly test as functioning correctly, the control board may be misreading the switch signal and falsely registering a sustained closure. Control board replacement would be required in this case.

See the test procedure for each cause

Frequently asked questions about F9

What does F9 mean on a Fisher & Paykel cooktop?
F9 indicates a power button fault. The cooktop's control system has detected that the power button switch remained continuously closed for 15 seconds, which is outside normal operation. This triggers the fault code to alert you to a problem with the button or its switch. Common causes include a stuck button, liquid contamination, or a failed switch contact.
How do I fix an F9 error on my Fisher & Paykel cooktop?
Start by inspecting the power button for any sticking, debris, or signs of liquid intrusion around the control panel. Clean the area carefully and press the button multiple times to check if it moves freely. If the button appears fine, the issue may be an internal switch failure requiring part replacement. If the control panel or switch assembly is faulty, a technician will need to diagnose and replace the affected component.
Will resetting my Fisher & Paykel cooktop clear the F9 error?
Resetting the cooktop by cutting power at the circuit breaker for a few minutes may temporarily clear the F9 code, but the fault will return if the underlying cause is not resolved. If the power button is still stuck or the switch contact is still closed, the control board will detect the condition again and re-trigger the error. A reset is useful for confirming whether the fault was intermittent, but it is not a permanent fix.
Is an F9 error on a Fisher & Paykel cooktop dangerous?
The F9 fault is a protective alert designed to stop unintended operation when the power button behaves abnormally. The cooktop disables normal function in response to this fault, which reduces the risk of the appliance operating unexpectedly. You should not attempt to bypass or ignore the fault. Addressing the root cause promptly, whether a stuck button or a faulty switch, is the safest course of action.
How much does it cost to repair an F9 error on a Fisher & Paykel cooktop?
Repair costs vary depending on the root cause. If the fix is simply cleaning debris or liquid from around the button, costs may be minimal. If the power button switch or control panel assembly requires replacement, parts and labor typically range from around $100 to $400 or more depending on the specific model and your location. A faulty control board represents the higher end of potential repair costs.

Related Fisher & Paykel cooktop codes

All Fisher & Paykel cooktop codes
View all 22 Fisher & Paykel cooktop codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass