GE Cooktop Error Code FAC

The FAC error code on a GE induction cooktop indicates a fault within the induction microprocessor. This microprocessor is the central control brain of the induction system, responsible for regulating power delivery to the induction coils, monitoring temperature sensors, interpreting user input, and managing the inverter circuitry that generates the high-frequency electromagnetic field used for cooking. When this processor detects an internal failure, an out-of-range signal, or a communication breakdown within the induction tray assembly, it throws the FAC fault to prevent unsafe operation.

The induction tray is the integrated assembly that houses the microprocessor, inverter board, coil drivers, and associated control electronics. Because the microprocessor is mounted directly on or is integral to this tray assembly, a fault in the processor itself is not typically addressed by replacing the chip alone. Instead, the entire induction tray is replaced as a unit. Causes can include component failure on the inverter board, thermal stress from repeated heat cycling, power surge damage, or an internal processor error that cannot be cleared through a simple reset.

Diagnosing FAC begins with replacing the induction tray, as directed by the first recommended diagnostic step. Before replacement, technicians should verify that incoming line voltage is within the cooktop's rated specification and that no loose wiring harness connections are present at the tray. If the error persists after tray replacement, the issue may lie in the wiring harness or the main control interface board communicating with the induction system.