Amana Dishwasher Error Code 10-3: Drying Fan Failure... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) monitors the drying fan's operation. If the MCU detects that the fan is not running or running erratically, it will trigger the 10-3 error code. The MCU sends a 120V AC signal to the fan relay which then powers the fan motor. A thermistor may also provide feedback to the MCU regarding the fan's temperature.

Symptoms:

The dishwasher completes the wash cycle, but dishes remain wet. The drying cycle may be shorter than usual, or the dishwasher may display error code 10-3.

Possible Causes:

Faulty drying fan motor.
Wiring harness issue between the MCU and the drying fan.
Defective drying fan relay on the control board.
Blockage preventing the fan from spinning freely.
Overheating thermostat tripping due to poor venting.
Damaged or loose connector at the fan motor or control board.

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Locate the drying fan, typically near the vent on the inside of the dishwasher door. Access may require removing interior panels with a 1/4-inch nut driver.
3

Inspect the fan for any visible obstructions. Remove any debris that may be blocking the fan.
4

Using a multimeter, check the voltage at the fan motor connector. You should measure approximately 120V AC when the drying cycle is active.
5

If there is no voltage, check the wiring harness from the control board to the fan for any breaks or loose connections. Use a wiring diagram to trace the circuit. Check continuity with your meter.
6

If the wiring is intact and there is voltage, replace the drying fan motor.
7

If there is no voltage and the wiring is good, the control board may be faulty and require replacement. Refer to the service manual for board replacement procedures. Ensure the replacement board is properly programmed.

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 ensure the breaker remains off during the repair. Be aware of potentially high voltage (120V AC) when testing electrical components.

Prevention:

Regularly clean the dishwasher's filter to prevent food particles from accumulating and potentially blocking the drying fan. Ensure proper venting of the dishwasher to prevent overheating.

Expert Tip:

Some Amana dishwashers have a service mode that allows you to manually activate the drying fan for testing. Refer to the technical service manual for the specific sequence to enter service mode on your model.

Frequently Asked Questions

•How do I access the control board to check the wiring harness?

Typically, the control board is located behind the front panel of the dishwasher. You will need to remove the outer door panel and any insulation to access it. Refer to the service manual for detailed instructions specific to your Amana model.

•What is the part number for a replacement drying fan motor?

The part number for the drying fan motor will vary depending on the specific model of your Amana dishwasher. You can find the correct part number by looking it up on the Amana parts website, or by contacting an appliance parts supplier with your model number.

•Can I test the drying fan motor separately before replacing it?

Yes, you can test the drying fan motor by directly applying 120V AC to the motor terminals. Be careful when working with live voltage. If the motor does not run when voltage is applied, it is likely faulty and needs to be replaced.

Amana Dishwasher Error Code 10-3: Drying Fan Failure Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the control board to check the wiring harness?

•What is the part number for a replacement drying fan motor?

•Can I test the drying fan motor separately before replacing it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: