GE Dishwasher F97 Error: Heating Element Warranty... | appliancefaults.com

Technical Background:

The F97 error in GE dishwashers indicates a problem within the heating circuit. The main control unit (MCU) monitors the heating element's performance through a temperature sensor. If the MCU detects an abnormal temperature reading or a lack of heating within a specified timeframe, it will trigger the F97 error. This involves checking the voltage path from the MCU to the heating element relay, through the heating element, back to the MCU via the temperature sensor.

Symptoms:

The dishwasher displays an F97 error code and the water is not heating properly during the wash cycle. Dishes may not be cleaned and dried effectively. The cycle may take longer to complete.

Possible Causes:

Failed heating element.
Faulty wiring to the heating element.
Defective temperature sensor.
Issue with the main control board (MCU).
Clogged or restricted water flow affecting heating.
Low incoming water temperature.

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Lock Out/Tag Out (LOTO).
2

Locate the heating element terminals at the bottom of the dishwasher tub.
3

Using a multimeter, measure the resistance across the heating element terminals. A typical reading should be between 15-25 ohms. An open circuit indicates a failed heating element.
4

Check the wiring harness and connections to the heating element for any signs of damage or corrosion. Repair or replace as needed.
5

Inspect the temperature sensor (thermistor), usually located near the heating element. Use a multimeter to check its resistance, comparing to the tech sheet resistance chart based on water temperature.
6

If the heating element and wiring are good, suspect a faulty main control board (MCU). Visually inspect the board for burnt components or damaged traces. If damage is evident, replace the control board.
7

After repairs, restore power and run a diagnostic cycle to confirm the F97 error is resolved.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. High voltage is present when the dishwasher is powered on.

Prevention:

Periodically run a dishwasher cleaning cycle with a dishwasher cleaner to prevent mineral buildup on the heating element. Ensure adequate water pressure to the dishwasher.

Expert Tip:

GE dishwashers often have a service mode that can be accessed by pressing and holding the Start and Select Cycle buttons simultaneously for 5 seconds. This mode allows you to run diagnostic tests and view error history.

Frequently Asked Questions

•What is the typical resistance value of the temperature sensor at room temperature (70F)?

Refer to the dishwasher's service manual or technical data sheet for the specific resistance value of the temperature sensor at 70F. It usually ranges from 5k to 10k ohms.

•How do I determine if the control board is sending power to the heating element?

With the dishwasher powered on and in a heating cycle (use extreme caution), use a multimeter to check for 120V AC at the heating element terminals. If voltage is present but the element is not heating, the element is likely faulty. If no voltage is present, the control board or wiring is suspect.

•Where is the heating element located in a GE dishwasher?

The heating element is typically located at the bottom of the dishwasher tub, often concealed beneath a cover or shield. Refer to the dishwasher's service manual or parts diagram for the exact location.

GE Dishwasher F97 Error: Heating Element Warranty Coverage and Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance value of the temperature sensor at room temperature (70F)?

•How do I determine if the control board is sending power to the heating element?

•Where is the heating element located in a GE dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: