Amana Dryer: Clothes Still Damp After Drying -... | appliancefaults.com

Technical Background:

The Amana dryer's MCU (Main Control Unit) relies on feedback from thermistors and thermostats to regulate the heating element. The MCU monitors voltage paths to ensure proper heating and airflow. If any of these components fail, the MCU might not activate the heating element for the correct duration, resulting in damp clothes.

Symptoms:

US homeowner observes that an Amana dryer, despite having a clear vent, is leaving clothes damp after a standard 60-minute drying cycle.

Possible Causes:

Blocked lint filter
Faulty heating element
Defective high-limit thermostat
Malfunctioning operating thermostat
Weak or failing motor
Insufficient voltage supply

Solution:

1

Disconnect power to the dryer at the breaker panel. Always Lock-Out-Tag-Out (LOTO).
2

Remove the lint filter and inspect the lint duct for any obstructions. Use a dryer vent cleaning brush (approx. 24-inch length).
3

Access the heating element (usually behind the rear panel). Use a multimeter to test the heating element for continuity. A reading of approximately 9-13 ohms is expected. If there's no continuity, replace the heating element.
4

Locate the high-limit thermostat and operating thermostat (usually near the heating element). Test each thermostat for continuity using a multimeter. They should show continuity at room temperature (around 70-75 Fahrenheit). If not, replace the faulty thermostat. Use a 1/4-inch nut driver.
5

Check the voltage at the dryer receptacle using a multimeter. You should read 240V AC between the two hot legs. Also, verify 120V AC between each leg and neutral. If the voltage is low, check the breaker panel and wiring.
6

Inspect the motor windings for any signs of burning or damage. If the motor seems weak, it may be failing and unable to turn the drum at the correct speed. Replacing the motor is necessary. Use a 5/16-inch socket to remove mounting screws.
7

Clean the blower wheel housing to ensure proper airflow. Accumulated lint can significantly reduce drying efficiency.

Safety Warning:

Disconnect power to the dryer at the breaker panel before performing any repairs. Dryers operate on 240V AC, which can be lethal. Lock-Out-Tag-Out (LOTO) procedure is mandatory.

Prevention:

Clean the lint filter after every load. Inspect and clean the dryer vent at least once a year, or more frequently if you notice longer drying times. Ensure proper airflow around the dryer.

Expert Tip:

Some Amana dryers have a diagnostic mode. To access it, rapidly press a specific button sequence (consult the service manual). This can display error codes related to the heating element, thermistors, or motor, providing valuable insights into the problem.

Frequently Asked Questions

•What is the proper resistance range for the thermistor in my Amana dryer?

The thermistor resistance varies with temperature. Refer to the dryer's service manual for a resistance-temperature chart. A typical reading at room temperature (70-75 Fahrenheit) is around 10-12k ohms.

•How do I properly clean the dryer vent duct, and what tools do I need?

Disconnect the dryer vent from the dryer and the wall. Use a dryer vent cleaning brush kit (available at most hardware stores) to scrub the inside of the duct. A shop vacuum can help remove dislodged lint. Reconnect the vent securely, ensuring no kinks or bends.

•Where can I find a service manual for my specific Amana dryer model?

You can typically find service manuals online by searching for your dryer's model number followed by 'service manual' or 'repair manual'. Websites like AppliancePartsPros.com or Searspartsdirect.com often have downloadable manuals. Be sure to verify the manual matches your exact model number.

Amana Dryer: Clothes Still Damp After Drying - Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the proper resistance range for the thermistor in my Amana dryer?

•How do I properly clean the dryer vent duct, and what tools do I need?

•Where can I find a service manual for my specific Amana dryer model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: