Amana Dryer Stops After 5 Minutes: Troubleshooting Guide... | appliancefaults.com

Technical Background:

The dryer's Main Control Unit (MCU) monitors various sensors (thermistor, thermal fuse, etc.) to regulate the heating cycle. Voltage (120V AC) is supplied to the motor and heating element based on these sensor readings. If the MCU detects an abnormal condition, such as overheating, it will shut down the dryer to prevent damage or fire. The motor also relies on proper voltage to maintain its RPM; low voltage can cause overheating and shutdown.

Symptoms:

The Amana dryer starts and runs for approximately 5 minutes before shutting off completely. It will not restart immediately after shutting down; a cool-down period is required. The clothes may be damp or hot.

Possible Causes:

Overheated motor due to lint buildup.
Faulty thermistor reading incorrect temperatures.
Defective heating element causing excessive heat.
Weak or failing motor windings.
Blocked venting restricting airflow.
Tripped thermal fuse.

Solution:

1

Unplug the dryer from the outlet.
2

Remove the rear access panel using a 1/4-inch nut driver.
3

Inspect the venting for obstructions. Clear any lint buildup. Ensure the vent hose is not kinked or crushed.
4

Locate the thermal fuse on the blower housing. Test for continuity with a multimeter. If no continuity, replace the thermal fuse.
5

Check the thermistor resistance using a multimeter. Compare the reading to the technical data sheet for your Amana model. Replace if out of specification.
6

Inspect the heating element for continuity and shorts to ground. If damaged, replace the heating element.
7

Reassemble the dryer and plug it back into the outlet. Test the dryer cycle.

Safety Warning:

Disconnect power to the dryer at the breaker panel before performing any repairs. Ensure the dryer is properly grounded. High voltage is present inside the dryer; exercise caution to avoid electric shock.

Prevention:

Clean the lint screen after every load. Inspect and clean the venting system at least twice per year. Periodically check the dryer's exhaust vent outside the house to ensure it is not blocked.

Expert Tip:

Many Amana dryers have a diagnostic mode. Consult the service manual for your specific model to access the diagnostic mode. This can help pinpoint the exact cause of the shutdown. Pressing and holding the start button and another button (often signal or dryness level) simultaneously for 5 seconds often initiates service mode.

Frequently Asked Questions

•Where is the thermistor located on my Amana dryer?

The thermistor is typically located on the blower housing, near the heating element. It's a small sensor with two wires connected to it.

•How do I test the heating element for a short to ground?

Use a multimeter set to ohms. Disconnect one of the wires from the heating element. Place one probe on the element terminal and the other on the dryer chassis (metal frame). If you get a reading other than infinite resistance (open circuit), the element is shorted to ground and needs to be replaced.

•What resistance value should I expect from the thermistor at room temperature (70°F)?

Typically, a dryer thermistor at 70°F will read approximately 10,000 to 12,000 ohms. Refer to your dryer's specific service manual for the exact value.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where is the thermistor located on my Amana dryer?

•How do I test the heating element for a short to ground?

•What resistance value should I expect from the thermistor at room temperature (70°F)?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: