Admiral Dryer: Troubleshooting a Moisture Sensor Not... | appliancefaults.com

Technical Background:

The moisture sensor in an Admiral dryer works by detecting the conductivity of the clothes as they tumble. The sensor bars send a low-voltage signal to the main control unit (MCU). As the clothes dry, the resistance between the bars increases, signaling the MCU to terminate the drying cycle. A broken wire or faulty sensor interrupts this process. Voltage is typically 5V DC from the control board to the sensor bars.

Symptoms:

Homeowners report that their Admiral dryer runs for an extended period but the clothes remain damp. The auto-dry cycle doesn't seem to be working correctly, even with a light load.

Possible Causes:

Faulty moisture sensor bar(s).
Broken wire or loose connection to the sensor.
Control board malfunction.
Venting issues restricting airflow.
Dryer overloaded.

Solution:

1

Unplug the dryer from the outlet and verify LOTO.
2

Locate the moisture sensor bars inside the dryer drum, usually near the lint filter housing.
3

Inspect the sensor bars for lint buildup or damage. Clean them with a damp cloth and a mild abrasive cleaner if necessary.
4

Check the wiring connections to the sensor bars using a multimeter to test for continuity. Repair or replace any broken wires or loose connections. Use a 1/4-inch nut driver to access the connections.
5

Verify proper venting; remove the vent hose and check for airflow. Clean the vent duct using a vent brush. Restricted airflow can mimic a moisture sensor issue.
6

If the issue persists, the control board might be faulty. Test the voltage to the sensor from the control board. Typically 5V DC. Replace the control board if needed.

Safety Warning:

Always disconnect the dryer from the power outlet before performing any repairs. Be aware of potential electrical shock hazards. Use proper Lock-Out/Tag-Out (LOTO) procedures. Some components may hold a charge even after disconnection.

Prevention:

Clean the lint filter after every load to ensure proper airflow. Periodically check and clean the dryer vent duct to prevent lint buildup. Avoid overloading the dryer.

Expert Tip:

Some Admiral dryers have a diagnostic mode. Press and hold the Start/Pause and the End of Cycle signal buttons simultaneously for 3 seconds to enter the service mode. This can give you error codes for the moisture sensor circuit.

Frequently Asked Questions

•How do I access the moisture sensor on my Admiral dryer?

The moisture sensor is typically located inside the dryer drum near the lint filter housing. You may need to remove the lint filter housing to access the sensor bars and wiring.

•What voltage should I expect to see at the moisture sensor?

You should typically see around 5V DC between the sensor bars when the dryer is running and the control board is functioning correctly. Use a multimeter to check this.

•How do I test the continuity of the moisture sensor wires?

Disconnect the dryer from the outlet. Use a multimeter set to the continuity setting. Place one probe on one end of the wire and the other probe on the opposite end. A beep or a reading of near zero ohms indicates continuity. If there's no beep or a very high reading, the wire is broken and needs replacement.

Admiral Dryer: Troubleshooting a Moisture Sensor Not Detecting Dry Clothes

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the moisture sensor on my Admiral dryer?

•What voltage should I expect to see at the moisture sensor?

•How do I test the continuity of the moisture sensor wires?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: