Amana Dryer Burning Smell on High Heat: Troubleshooting... | appliancefaults.com

Technical Background:

The Amana dryer uses a Main Control Unit (MCU) to regulate the heating element via a relay. The MCU receives temperature feedback from a thermistor or thermostat. High heat setting activates the heating element for a longer duration and at a higher voltage (typically 240V AC split phase). A burning smell often indicates overheating due to restricted airflow, component failure, or electrical arcing.

Symptoms:

The US homeowner observes a distinct burning smell emanating from the Amana dryer only when the high heat setting is selected. Clothes may also be excessively hot or slightly scorched.

Possible Causes:

Excessive lint buildup in the lint trap, venting, or blower housing.
A failing or partially shorted heating element.
Overheating of the dryer motor due to worn bearings or excessive load.
A foreign object (sock, paper) caught in the blower wheel or heating element housing.
Wiring issues or loose connections at the heating element, motor, or control board.
Restricted airflow due to a crushed or blocked vent hose.

Solution:

1

Disconnect the dryer from the power outlet and gas supply (if applicable). Always Lock Out Tag Out (LOTO) the breaker.
2

Thoroughly clean the lint trap and venting system. Disconnect the vent hose from the dryer and the wall, and use a vent brush to remove any accumulated lint.
3

Inspect the heating element for any signs of damage, such as breaks or blisters. Use a multimeter to check the element's continuity. A typical heating element resistance is between 9 and 11 ohms.
4

Remove the dryer's front or rear panel (depending on the model) to access the blower housing. Inspect the blower wheel for any obstructions and clean thoroughly.
5

Check the dryer motor for proper operation. Inspect the motor windings for shorts to ground. Check the motor amperage using a clamp meter. Compare to the motor nameplate amperage rating.
6

Examine the wiring connections at the heating element, motor, and control board for any loose or corroded connections. Tighten or replace as needed.
7

Reassemble the dryer and test its operation on the high heat setting. Monitor for any unusual smells or noises. Confirm proper vent exhaust to the outside.

Safety Warning:

Disconnect power before servicing. Dryer circuits operate at 240V AC. Capacitors can store a lethal charge even after disconnection. Always use appropriate safety precautions, including wearing safety glasses and gloves.

Prevention:

Clean the lint trap after every load. Inspect and clean the venting system at least once a year. Avoid overloading the dryer.

Expert Tip:

Many Amana dryers have a service mode that allows you to run diagnostic tests and check error codes. Refer to the service manual for instructions on accessing the service mode (often involves a specific sequence of button presses).

Frequently Asked Questions

•How do I safely discharge a capacitor in the dryer?

Use a 20,000-ohm 2-watt resistor with insulated leads. Connect the leads to the capacitor terminals to slowly discharge it. Verify with a voltmeter that the voltage drops to zero before touching the terminals.

•What is the proper vent hose material to use for a dryer?

Use rigid metal venting whenever possible. If flexible venting is necessary, use UL-listed metal flexible duct. Never use plastic or foil flexible duct, as it is a fire hazard.

•Where can I find the motor nameplate amperage rating on my Amana dryer?

The motor nameplate is typically located on the motor housing itself. It will list the voltage, frequency, and full-load amperage (FLA) rating of the motor. You may need a 1/4-inch nut driver to remove the motor cover to expose the motor nameplate.

Amana Dryer Burning Smell on High Heat: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I safely discharge a capacitor in the dryer?

•What is the proper vent hose material to use for a dryer?

•Where can I find the motor nameplate amperage rating on my Amana dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: