Admiral Dryer: Drum Light Flashing When Door is Closed -... | appliancefaults.com

Technical Background:

The drum light is controlled by a relay on the Main Control Unit (MCU). The MCU receives a signal from the door switch indicating whether the door is open or closed. When the door is closed, the MCU should de-energize the relay, turning off the light. A fault in the door switch circuit, MCU, or wiring can cause the light to flash.

Symptoms:

The drum light inside the Admiral dryer flashes continuously even when the door is closed. The dryer may or may not operate normally otherwise. The flashing can be rapid or intermittent.

Possible Causes:

Faulty door switch.
Shorted drum light socket.
Wiring harness issue between the door switch and the main control unit (MCU).
Defective MCU relay controlling the drum light.
Moisture affecting electrical components.

Solution:

1

Disconnect power to the dryer at the breaker panel.
2

Open the dryer door and locate the door switch. Use a 1/4-inch nut driver to remove the mounting screws.
3

Disconnect the wires from the door switch and use a multimeter to test for continuity when the switch is activated (door closed). If there is no continuity, replace the door switch.
4

Inspect the drum light socket for any signs of shorts or damage. Replace if necessary.
5

Check the wiring harness between the door switch and the MCU for any breaks or loose connections. Repair or replace as needed.
6

If the above steps do not resolve the issue, the MCU may be faulty. Replacing the MCU is recommended, but requires experience.
7

Reconnect power and test the dryer.

Safety Warning:

Disconnect power to the dryer at the breaker panel before attempting any repairs. Lock Out / Tag Out (LOTO) procedures should be followed. The dryer operates on 120V AC, which can cause serious injury or death.

Prevention:

Regularly clean the dryer vent to prevent moisture buildup. Avoid overloading the dryer, as this can stress the components. Periodically inspect the door switch and wiring for any signs of wear or damage.

Expert Tip:

On some Admiral models, entering service mode (consult the service manual for the specific sequence) may allow you to manually test the drum light relay. This can help confirm whether the MCU is the source of the problem.

Frequently Asked Questions

•How do I access the dryer's service mode?

The service mode entry sequence varies by model. Consult the dryer's service manual (usually available online) for the correct button combination. It often involves pressing several buttons simultaneously for a few seconds.

•What voltage should I expect at the drum light socket?

You should expect 120V AC at the drum light socket when the door is open and the light is supposed to be on. Use a multimeter to verify the voltage with the door open.

•Where is the MCU located in my Admiral dryer?

The MCU is usually located behind the control panel at the top front or top rear of the dryer. You will need to remove the control panel to access it. Be careful when removing the control panel, as there may be multiple wires connected to it.

Admiral Dryer: Drum Light Flashing When Door is Closed - Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the dryer's service mode?

•What voltage should I expect at the drum light socket?

•Where is the MCU located in my Admiral dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: