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Error code reference

GE Cooktop Error Code F1x

UL 'On' Indicator Light/LED failure (Electronic Control Radiant Cooktop).

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UL 'On' Indicator Light/LED failure (Electronic Control Radiant Cooktop).

First step from the service manual

Replace Display Board (under Touch Board).

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What F1x means on a GE cooktop

The F1x error code on a GE electronic control radiant cooktop indicates a failure in the UL (Upper Left) burner zone 'On' indicator light or LED. This indicator is part of the touch control display board system, which manages both user input and visual feedback for each cooking zone. When the control detects that the UL zone indicator light is not functioning as expected, either due to an open circuit, a failed LED component, or a communication fault between the display board and the underlying touch board, it triggers the F1x fault to alert the user and technician.

The display board on these GE radiant cooktops sits beneath the touch board and handles the LED indicator outputs for each cooking zone. A failure in this board can manifest as a single non-functioning zone indicator or as a complete loss of visual feedback for the upper left zone. The fault is typically internal to the board itself and is not caused by user error or external conditions such as spills, though liquid intrusion into the control panel area can accelerate component degradation.

Because the LED driver circuitry and the indicator logic are integrated into the display board assembly, the recommended diagnostic approach is direct replacement of the display board rather than attempting component-level repair. If replacing the display board resolves the F1x fault, no further action is needed. If the fault persists after board replacement, inspect the wiring harness connections between the display board and touch board for damage, corrosion, or loose terminals.

Source: manufacturer service documentation.

Common causes of F1x

  1. 01

    Failed Display Board

    Part replacement

    The display board, located beneath the touch board, contains the LED driver circuitry for all zone indicators. An internal component failure on this board is the most common cause of the F1x fault and replacement is the primary recommended fix.

  2. 02

    Burned Out or Open LED

    Part replacement

    The individual LED for the upper left zone indicator may have failed open, preventing the control from detecting a valid output signal. This is typically an integrated part of the display board and not serviceable separately.

  3. 03

    Loose or Damaged Wiring Harness Connection

    Wiring / connection

    The ribbon cable or wiring harness connecting the display board to the touch board may have a loose terminal or damaged wire. Inspect all connectors between the two boards for corrosion, bent pins, or incomplete seating.

  4. 04

    Liquid or Debris Intrusion

    Part replacement

    Spills that penetrate the cooktop control panel area can corrode solder joints or LED contacts on the display board. Check the board surface for visible residue, corrosion, or discoloration near the UL indicator circuit.

See the test procedure for each cause

Frequently asked questions about F1x

What does F1x mean on a GE cooktop?
The F1x code on a GE electronic control radiant cooktop indicates a failure in the upper left burner zone 'On' indicator light or LED. The cooktop's control system has detected that the UL zone indicator is not functioning correctly. This is a display board fault, and replacing the display board located under the touch board is the primary diagnostic step.
Can I fix the F1x error myself on a GE cooktop?
A knowledgeable DIYer with appliance repair experience may be able to replace the display board, but the repair requires disassembling the cooktop control panel and working near electrical components. It is important to disconnect power at the breaker before beginning any work. If you are not comfortable working inside the appliance, a qualified technician should perform the repair.
Is it safe to keep using my GE cooktop with the F1x error?
The F1x fault specifically relates to the indicator light for the upper left burner zone, not the heating element itself. However, continuing to use the cooktop without a functioning zone indicator creates a safety risk because you may not have reliable visual confirmation of which burners are active. It is best to have the issue repaired before regular use continues.
How much does it cost to repair the F1x error on a GE cooktop?
Repair costs will vary depending on the specific display board part price and whether you hire a technician or perform the repair yourself. Display board replacement parts for GE radiant cooktops generally range from around $50 to $200 depending on the model. Adding professional labor typically brings the total repair cost to somewhere in the range of $150 to $350.
Will resetting my GE cooktop clear the F1x error code?
Resetting the cooktop by cutting power at the breaker for several minutes may temporarily clear the F1x fault display, but the underlying hardware failure in the display board will cause the code to return. A reset does not repair a failed LED or faulty board circuitry. A permanent fix requires replacing the display board beneath the touch board.

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