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

Technical Background:

The F97 error code on a GE Monogram dishwasher indicates a problem with the circulation pump motor circuit. The Main Control Unit (MCU) monitors the voltage and current flow to the pump. The MCU uses a relay to control power to the circulation pump motor. If the MCU detects an open or short circuit, or insufficient current, it will generate the F97 fault. Voltage paths are typically 120V AC from the breaker, through the main control board relay, and then to the pump.

Symptoms:

The US homeowner reports that the GE Monogram dishwasher is not pumping water, and the display shows an F97 error code. The dishwasher might start, but the wash cycle does not proceed. There may be unusual noises, or no noise at all coming from the pump area.

Possible Causes:

Faulty main control board relay
Wiring harness issue between the main control board and pump motor
Defective circulation pump motor
Blockage in the pump impeller
Voltage supply problem to the main control board

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Locate and access the main control board (usually behind the kick plate). Use a 1/4-inch nut driver to remove the access panel.
3

Visually inspect the control board for any burned components or damaged traces.
4

Check the wiring harness connecting the control board to the circulation pump motor. Look for loose connections or damaged wires.
5

Use a multimeter to check the voltage at the circulation pump motor connector on the main control board. You should see approximately 120V AC when the pump is supposed to be running.
6

If no voltage is present, and the wiring harness is intact, carefully consider a relay bypass ONLY FOR TESTING PURPOSES. This is not a permanent fix. **WARNING: Do NOT attempt this without a thorough understanding of electrical circuits and safety protocols.**
7

Reconnect power and observe the dishwasher's operation after the test. If bypassing the relay resolves the issue, replace the main control board.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Use proper Lock-Out Tag-Out (LOTO) procedures to prevent accidental re-energizing of the circuit. Dishwashers operate with 120V AC, which can cause serious injury or death.

Prevention:

Regularly clean the dishwasher's filter and remove any debris that could clog the pump. Run a dishwasher cleaning cycle with a dishwasher cleaner every month to prevent build-up. Check the spray arms for clogs as well.

Expert Tip:

Many GE dishwashers have a service mode. Entering this mode often requires pressing a sequence of buttons. Consult the service manual for the specific button sequence for your model. The service mode can provide diagnostic information and allow you to test individual components.

Frequently Asked Questions

•What is the exact voltage I should expect at the pump motor connector?

You should expect to see approximately 120V AC at the pump motor connector when the control board is sending power to the pump. Fluctuations of plus or minus 10% are acceptable.

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

Replacement main control boards can be found at authorized GE appliance parts retailers, both online and in local appliance parts stores. Be sure to have your model number handy to ensure you get the correct part.

•How do I access the circulation pump motor to check for blockages?

Accessing the circulation pump typically involves removing the lower spray arm, the filter assembly, and then a pump housing. There may be retaining clips or screws holding the pump in place. Consult the service manual for detailed instructions specific to your model.

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

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the exact voltage I should expect at the pump motor connector?

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

•How do I access the circulation pump motor to check for blockages?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: