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Error code reference

GE Cooktop Error Code FAB

Bad induction driver (IGBT).

GE codesGE cooktop codes

Bad induction driver (IGBT).

First step from the service manual

Replace Induction Tray.

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 FAB means on a GE cooktop

The FAB error code on a GE induction cooktop indicates a fault in the induction driver circuit, specifically pointing to a failed or malfunctioning IGBT (Insulated Gate Bipolar Transistor). The IGBT is the core power switching component within the induction tray assembly. It controls the high-frequency alternating current that flows through the induction coil, generating the electromagnetic field that heats cookware. When the control board detects that the IGBT is not switching correctly, is shorted, or has failed open, it triggers the FAB code and disables the affected cooking zone to prevent further damage or a potential fire hazard.

The induction tray is the modular assembly that houses the coil, IGBT, and associated driver circuitry for one or more cooking zones. Because the IGBT and its supporting components are integrated into this tray assembly rather than being easily serviceable as discrete parts, the recommended first diagnostic step is replacement of the induction tray as a complete unit. A failed IGBT can result from sustained overload conditions, overheating due to blocked ventilation, power surges, or simply component fatigue over time.

Before replacing the induction tray, technicians should visually inspect the existing tray for signs of burn marks, cracked components, or melted solder points that confirm IGBT failure. Checking that the cooling fan operates correctly is also important, as a fan failure that caused overheating may have damaged the IGBT and could damage a replacement tray if not addressed first.

Source: manufacturer service documentation.

Common causes of FAB

  1. 01

    Failed IGBT in the Induction Tray

    Part replacement

    The IGBT transistor has burned out or shorted internally, which is the direct cause of the FAB code. This is the most likely cause and is confirmed by replacing the induction tray assembly.

  2. 02

    Overheating Due to Blocked or Failed Cooling Fan

    Wiring / connection

    If the cooktop's internal cooling fan is not operating or airflow vents are blocked, excessive heat buildup can destroy the IGBT. Check that the fan spins freely and runs during cooktop operation before installing a replacement tray.

  3. 03

    Power Surge or Voltage Spike

    Wiring / connection

    A sudden spike in line voltage can exceed the IGBT's ratings and cause immediate failure. If this is suspected, inspecting the power supply and considering a surge protector for the circuit is advisable.

  4. 04

    Sustained Overload from Incompatible or Oversized Cookware

    Wiring / connection

    Repeatedly using cookware that draws excessive power from the induction zone can stress the IGBT over time, leading to premature failure. Ensure replacement is paired with use of properly sized, induction-compatible cookware.

  5. 05

    Loose or Corroded Wiring Connections to the Induction Tray

    Wiring / connection

    Poor electrical connections between the control board and induction tray can cause erratic IGBT behavior and trigger the FAB code. Inspect all connectors and wiring harnesses to the tray for corrosion or loose pins before condemning the tray itself.

See the test procedure for each cause

Frequently asked questions about FAB

What does FAB mean on a GE cooktop?
The FAB code on a GE induction cooktop indicates a bad induction driver, specifically a fault with the IGBT (Insulated Gate Bipolar Transistor) inside the induction tray assembly. The IGBT is responsible for switching the high-frequency current that powers the induction coil in a cooking zone. When this component fails, the cooktop disables the affected zone and displays the FAB code. Replacement of the induction tray is the recommended fix.
Can I fix a FAB error on my GE induction cooktop myself?
Replacing the induction tray involves working inside an appliance that carries high voltage, so this repair is best handled by a qualified technician. A knowledgeable DIYer who is comfortable with appliance repair can perform the replacement, but the power must be completely disconnected at the circuit breaker before any work begins. The induction tray is a complete modular assembly, so no component-level soldering is required, just disconnecting the wiring harness and mounting hardware.
Is it safe to keep using my GE cooktop when the FAB code is showing?
No, you should not attempt to use the affected cooking zone while the FAB code is active. The cooktop has disabled that zone specifically because it detected a component failure that could pose a risk of further damage or a hazard. Other zones may still function, but the faulty zone should remain unused until the induction tray is replaced.
Will resetting the cooktop clear the FAB error code?
A power reset by turning off the circuit breaker for a few minutes may temporarily clear the FAB code, but it will return as soon as the cooktop tests the induction driver circuit again. Because the code points to a hardware failure of the IGBT, no amount of resetting will resolve the underlying problem. The induction tray must be replaced to permanently clear the fault.
How much does it cost to repair a FAB error on a GE induction cooktop?
Repair costs vary depending on the specific cooktop model and local labor rates. The induction tray part itself typically ranges from around $150 to $400 or more depending on the model. Adding professional labor, total repair costs generally fall somewhere between $250 and $600. Getting a parts quote for your specific model number before committing to the repair is recommended, as the part cost on higher-end models can make repair versus replacement worth comparing.

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