GE Dishwasher Error Code F97: Thermal Fuse and Wiring Harness Troubleshooting
GE dishwasher displaying F97? Learn how to check the thermal fuse and wire harness for a quick fix. Step-by-step guide included.
GE dishwasher displaying F97? Learn how to check the thermal fuse and wire harness for a quick fix. Step-by-step guide included.
The thermal fuse is typically located near the heating element, often on the top of the dishwasher tub or on the side. Consult your dishwasher's service manual or parts diagram for the exact location.
With the dishwasher unplugged, use a multimeter set to the continuity setting. Place one probe on each end of the wire you want to test. If the multimeter beeps or shows a low resistance (close to 0 ohms), the wire has continuity. If there's no beep or high resistance, the wire is broken or has a bad connection.
Replacing the MCU involves disconnecting power to the dishwasher, accessing the control panel, disconnecting all wiring harnesses from the old MCU, and then connecting them to the new MCU. Make sure to transfer any necessary jumpers or settings from the old board to the new one. Refer to the service manual for detailed instructions and wiring diagrams to avoid errors. After replacement, you may need to initialize or program the new MCU.
The F97 error code on a GE dishwasher indicates a problem with the thermal fuse circuit. The main control board (MCU) monitors the thermal fuse for continuity. If the MCU detects an open circuit or lack of continuity, it triggers the F97 error. Voltage flows through the wiring harness to the thermal fuse and returns to the MCU, completing the circuit.
Always disconnect power to the dishwasher before performing any repairs. Use proper lockout/tagout (LOTO) procedures to prevent accidental energizing of the circuit. The dishwasher operates on 120V AC, which can cause electric shock.
Avoid overloading the dishwasher. Regularly clean the filter to prevent overheating. Check the spray arms for clogs.
Some GE dishwashers have a service mode. Accessing this mode may allow you to clear the error code after replacing the thermal fuse. Consult the technical service documentation for the specific model to find the service mode entry sequence.