Admiral Dryer: Lint Filter Light Stays On After Cleaning... | appliancefaults.com

Technical Background:

The dryer's Main Control Unit (MCU) monitors the lint filter sensor. The sensor provides a voltage signal to the MCU indicating the presence or absence of lint buildup. If the MCU detects a signal indicating excessive lint, it illuminates the lint filter light. Wiring provides voltage typically at 5V DC.

Symptoms:

The lint filter light on your Admiral dryer remains illuminated even after you've thoroughly cleaned the lint filter. This can be accompanied by reduced drying performance or a burning smell.

Possible Causes:

Faulty lint filter sensor
Blocked vent duct
Damaged wiring to the sensor
Defective MCU (Main Control Unit)
Grounding issue
Software Glitch

Solution:

1

Disconnect power to the dryer at the breaker panel. Verify zero voltage at the dryer outlet with a multimeter.
2

Locate the lint filter sensor, usually near the lint filter housing. Inspect the sensor for physical damage or debris.
3

Using a multimeter, check the continuity of the lint filter sensor. Refer to the dryer's wiring diagram for the correct sensor resistance value. If the sensor is open or shorted, replace it.
4

Inspect the wiring harness and connectors leading to the lint filter sensor. Look for loose connections, corrosion, or frayed wires. Repair or replace as needed.
5

Check the dryer vent duct for blockages. Disconnect the duct from the dryer and clean out any lint buildup with a dryer vent cleaning brush. Ensure the vent run is less than the maximum length specified in the dryer's system manual.
6

If the sensor and wiring are good and the vent is clear, suspect a faulty MCU. Refer to the service manual for diagnostic tests specific to the MCU. Replacement of the MCU may be necessary.
7

After completing repairs, restore power to the dryer and test its operation. Verify that the lint filter light turns off when the lint filter is clean and the dryer is running.

Safety Warning:

Disconnect power to the dryer before performing any repairs. Use Lock-Out Tag-Out (LOTO) procedures to prevent accidental re-energizing of the circuit. Dryers operate on 240V AC; improper handling can result in severe electrical shock.

Prevention:

Clean the lint filter after every load. Regularly inspect and clean the dryer vent duct, ideally every 6-12 months. Use rigid metal ducting for the vent to prevent kinking and lint buildup.

Expert Tip:

Many Admiral dryers have a diagnostic mode. Consult the service manual for the specific sequence to access the diagnostic mode. This mode may provide error codes related to the lint filter sensor and other components. Run diagnostic mode before replacing any parts.

Frequently Asked Questions

•Where can I find the wiring diagram for my Admiral dryer?

The wiring diagram is typically located inside the dryer's control panel or on the back panel. It may be folded or taped to the inside surface. You can also search for the wiring diagram online using your dryer's model number.

•How do I test the lint filter sensor with a multimeter?

Set your multimeter to the ohms setting. Disconnect the sensor's wires. Place one multimeter probe on each of the sensor's terminals. Compare the reading to the expected resistance value listed in the wiring diagram. A reading of infinity (open circuit) or zero (short circuit) indicates a faulty sensor.

•What is the maximum allowable length for a dryer vent duct?

The maximum allowable length for a dryer vent duct is typically specified in the dryer's installation manual. A common rule of thumb is 25 feet, with deductions for each elbow (typically 5 feet for a 90-degree elbow and 2.5 feet for a 45-degree elbow). Consult the manual for your specific Admiral dryer model.

Admiral Dryer: Lint Filter Light Stays On After Cleaning - Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where can I find the wiring diagram for my Admiral dryer?

•How do I test the lint filter sensor with a multimeter?

•What is the maximum allowable length for a dryer vent duct?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: