GE Monogram Dishwasher F97 Error: Main Control Board... | appliancefaults.com

Technical Background:

The F97 error code on a GE Monogram dishwasher typically indicates a problem with the heating circuit. The main control board (MCU) monitors the voltage and current flow to the heating element. If the MCU detects an abnormal voltage or current, it will trigger the F97 error. The heating relay on the board activates power to the heating element, completing the circuit. The logic path requires appropriate signals from the water level sensor and temperature sensor.

Symptoms:

The dishwasher displays an F97 error code and may not heat water properly during the wash cycle. Dishes may come out still dirty or wet. The cycle may also be interrupted mid-cycle.

Possible Causes:

Faulty main control board relay
Wiring harness issue between the control board and heating element
Defective heating element
Overheating issue (possible thermostat malfunction)
Software glitch in the control board's firmware
Tripped high-limit thermostat

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Locate the main control board, typically behind the kick panel. Remove the kick panel using a 1/4-inch nut driver.
3

Inspect the wiring harness connecting the heating element to the control board for any signs of damage or corrosion. Use a flashlight for thorough inspection.
4

Using a multimeter, test the heating element for continuity. A reading of around 15-20 ohms is typical. An open circuit indicates a bad element. Set the multimeter to the ohms setting.
5

Check the high-limit thermostat for continuity with the multimeter. A lack of continuity indicates a failed thermostat, or a break in the wiring circuit.
6

If the wiring and heating element are good, the relay on the control board is the likely culprit. Replacing the main control board is generally the best solution. Order the correct replacement part number.
7

Reconnect power and verify proper operation. Run a test cycle. Monitor the water temperature during the cycle.

Safety Warning:

Disconnect power to the appliance at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization. Dishwashers contain high voltage components. Ensure the capacitor on the board is discharged.

Prevention:

Regularly clean the dishwasher's filter to prevent debris from clogging the heating element. Avoid overloading the dishwasher. Use the appropriate amount of detergent.

Expert Tip:

Some GE Monogram dishwashers have a service mode that can be accessed by pressing a specific sequence of buttons. Refer to the service manual for the exact sequence for your model. This mode allows you to run diagnostic tests and clear error codes.

Frequently Asked Questions

•How do I access the service mode on my GE Monogram dishwasher?

Refer to your dishwasher's service manual or search online using your model number and the term 'service mode'. Common sequences involve pressing specific button combinations within a short time frame, such as 'High Temp Scrub, Heated Dry, High Temp Scrub, Heated Dry'.

•What voltage should I expect to see at the heating element when it is activated?

You should measure approximately 120V AC at the heating element terminals when the dishwasher is in the heating cycle. Use a multimeter set to AC voltage to verify. Be careful when testing live voltage.

•Where can I find a replacement main control board for my GE Monogram dishwasher?

You can purchase a replacement main control board from appliance parts retailers, both online and in brick-and-mortar stores. Be sure to use your dishwasher's model number to ensure you get the correct part. Some suppliers are GE Appliance Parts, RepairClinic, and AppliancePartsPros.

GE Monogram Dishwasher F97 Error: Main Control Board Relay Bypass Testing

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the service mode on my GE Monogram dishwasher?

•What voltage should I expect to see at the heating element when it is activated?

•Where can I find a replacement main control board for my GE Monogram dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: