GE Dishwasher F97 Error: Troubleshooting Dry Boost Fan... | appliancefaults.com

Technical Background:

The F97 error code on GE dishwashers typically indicates a problem with the Dry Boost fan circuit. The main control unit (MCU) monitors the voltage and current draw of the Dry Boost fan. If the MCU detects an abnormal reading, it will trigger the F97 error. The voltage path goes from the main control board, through the wiring harness, to the Dry Boost fan motor and back.

Symptoms:

The GE dishwasher displays an F97 error code. The Dry Boost function may not be working, and the dishes may not be drying properly. The dishwasher may stop mid-cycle.

Possible Causes:

Faulty Dry Boost fan motor.
Wiring harness issue between the Dry Boost fan and the main control board.
Main control board failure.
Blockage preventing the Dry Boost fan from spinning freely.
Overheating of the fan motor due to prolonged operation.
Loose connection in the fan's power supply circuit.

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Locate the Dry Boost fan, typically in the dishwasher door or near the vent.
3

Inspect the wiring harness connecting the fan to the main control board for any damage or loose connections.
4

Use a multimeter to test the fan motor for continuity. A reading of infinity indicates a failed motor.
5

Verify the voltage supply to the fan during the dry cycle using a multimeter. Expect to see approximately 120V AC.
6

If the wiring and voltage are good, replace the Dry Boost fan motor.
7

If the fan motor is good, replace the main control board.

Safety Warning:

Disconnect power to the dishwasher at the breaker panel before performing any troubleshooting or repairs. Dishwashers operate on 120V AC, which can cause serious injury or death.

Prevention:

Regularly clean the dishwasher's filters and spray arms to prevent blockages that could cause the Dry Boost fan to overwork. Run a dishwasher cleaning cycle with a dishwasher cleaner every month.

Expert Tip:

Some GE dishwashers have a service mode that allows you to test individual components, including the Dry Boost fan. Consult the service manual for your specific model for instructions on entering and using service mode. You can access service mode by pressing and holding the 'Start' and 'Cycle Select' buttons simultaneously for 5 seconds.

Frequently Asked Questions

•What is the resistance range I should expect to see on the Dry Boost fan motor?

Typically, a good Dry Boost fan motor will have a resistance between 30 and 60 ohms. An open circuit (infinity) or a short circuit (0 ohms) indicates a faulty motor.

•How do I access the main control board on my GE dishwasher?

The main control board is usually located behind the access panel at the bottom front of the dishwasher. You will likely need a 1/4-inch nut driver to remove the screws securing the panel. Disconnect power before accessing the control board.

•If the Dry Boost fan is running but the dishes are still not drying, what else could be the issue?

If the Dry Boost fan is running, check the heating element and thermostat. A faulty heating element will prevent the water from reaching the correct temperature for drying. Also, ensure the vent is not blocked.

GE Dishwasher F97 Error: Troubleshooting Dry Boost Fan Issues

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance range I should expect to see on the Dry Boost fan motor?

•How do I access the main control board on my GE dishwasher?

•If the Dry Boost fan is running but the dishes are still not drying, what else could be the issue?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: