GE Dishwasher F97 Error Code: Internal Component Failure... | appliancefaults.com

Technical Background:

The F97 error code on a GE dishwasher indicates an internal component failure, typically related to the main control board (MCU) or the motor control board (inverter board). The MCU monitors various sensors and components within the dishwasher and communicates with the motor control board to regulate motor speed and function. Voltage paths and component stability are crucial for correct operation.

Symptoms:

The dishwasher displays an F97 error code and may not start or complete a cycle. The control panel may be unresponsive or show other error codes intermittently.

Possible Causes:

Failed Main Control Board (MCU)
Faulty Motor Control Board (Inverter Board)
Wiring harness issue between the MCU and Inverter Board
Software glitch in the MCU
Overheating components on the MCU or Inverter board

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Access the main control board (MCU) located typically behind the lower access panel. Use a 1/4-inch nut driver.
3

Visually inspect the MCU for any signs of burning, swelling, or corrosion.
4

Check the wiring harness between the MCU and the motor control board (inverter board) for loose connections or damage.
5

Using a multimeter, test the voltage supply to the MCU. You should see approximately 120V AC on the appropriate terminals.
6

If voltage is present and the MCU appears damaged, replace the MCU with a new, compatible GE part.
7

After replacing the MCU, run a diagnostic cycle to confirm the F97 error is resolved. Consult the service manual for the specific diagnostic cycle procedure.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Dishwashers contain high voltage components that can cause serious injury or death. Use proper lockout/tagout (LOTO) procedures to ensure the circuit remains de-energized during servicing.

Prevention:

Regularly clean the dishwasher filter to prevent blockages that can strain the motor and control board. Avoid overloading the dishwasher, which can also put stress on the components. Periodically inspect the spray arms for clogs and clean them as needed.

Expert Tip:

After replacing the MCU, initiate the service mode by pressing and holding the Start/Reset button for 5 seconds to recalibrate the system and clear any residual error codes. This helps ensure proper operation and prevents future errors.

Frequently Asked Questions

•How do I access the main control board (MCU)?

The MCU is typically located behind the lower access panel of the dishwasher. You will need to remove the access panel using a 1/4-inch nut driver or screwdriver.

•What voltage should I expect to see at the MCU terminals?

You should expect to see approximately 120V AC at the designated power input terminals on the MCU. Refer to the wiring diagram for the specific terminals.

•Where can I find a compatible replacement MCU for my GE dishwasher?

You can find a replacement MCU at authorized GE appliance parts dealers or online retailers specializing in appliance parts. Ensure you have the model number of your dishwasher to order the correct part.

GE Dishwasher F97 Error Code: Internal Component Failure Diagnostic Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the main control board (MCU)?

•What voltage should I expect to see at the MCU terminals?

•Where can I find a compatible replacement MCU for my GE dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: