GE Profile Dishwasher Dry Boost Fan Beeping But Not... | appliancefaults.com

Technical Background:

The main control unit (MCU) sends a 120V AC signal to the Dry Boost fan motor during the drying cycle. A thermistor monitors the internal temperature, and the MCU adjusts fan speed accordingly. If the MCU detects a fault with the fan motor, wiring, or thermistor, it can trigger a beeping error code. The voltage path includes the main control board, wiring harness, door switch, and finally, the fan motor.

Symptoms:

US homeowner reports that the Dry Boost fan in their GE Profile dishwasher is beeping but not spinning. The dishwasher may otherwise be operating normally, but the drying performance is reduced.

Possible Causes:

Blocked fan blades or foreign object obstruction.
Faulty fan motor.
Wiring harness issue between the main control board and the fan motor.
Defective main control board (MCU).
Thermistor malfunction affecting fan operation.
Door switch malfunction.

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Inspect the fan blades for any obstructions. Remove any debris.
3

Check the wiring harness connecting the fan motor to the main control board for any damage or loose connections. Use a multimeter to test continuity.
4

Using a multimeter, test the fan motor for continuity. An open circuit indicates a faulty motor.
5

Verify the voltage supply to the fan motor from the main control board during the drying cycle. Expect approximately 120V AC. Use a digital multimeter.
6

If voltage is present and the motor is not running, replace the fan motor.
7

If there is no voltage at the fan motor, the main control board may be faulty and need replacement. Refer to the service manual for board replacement procedure.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization. High voltage is present within the dishwasher. Exercise caution.

Prevention:

Regularly inspect and clean the dishwasher's interior, removing any food particles or debris that could obstruct the fan. Avoid overloading the dishwasher to prevent items from falling and blocking the fan.

Expert Tip:

On some GE Profile models, you can enter the service mode by pressing and holding the Start and Select buttons simultaneously for 5 seconds. Then, navigate to the fan diagnostic test to check fan operation and error codes. This can help isolate the issue before disassembling the dishwasher.

Follow-up Questions:

Frequently Asked Questions

•What is the part number for the Dry Boost fan motor on this GE Profile dishwasher?

The part number for the Dry Boost fan motor varies depending on the specific model number. Consult the appliance's parts diagram or the manufacturer's website using your exact model number to determine the correct part number.

•How do I test the thermistor to see if it's affecting the fan operation?

The thermistor's resistance changes with temperature. You can measure its resistance with a multimeter and compare it to the values provided in the service manual at different temperatures. An incorrect resistance reading indicates a faulty thermistor.

•Where is the main control board located in the GE Profile dishwasher?

The main control board is typically located behind the front control panel of the dishwasher. You will need to remove the outer door panel to access it. Disconnect power before accessing the control board.

GE Profile Dishwasher Dry Boost Fan Beeping But Not Spinning: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the part number for the Dry Boost fan motor on this GE Profile dishwasher?

•How do I test the thermistor to see if it's affecting the fan operation?

•Where is the main control board located in the GE Profile dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: