Amana Dryer Clicking Sound When Starting: Troubleshooting... | appliancefaults.com

Technical Background:

MCU Logic and Voltage Paths.

The Amana dryer's operation relies on the Main Control Unit (MCU) to manage various functions. When the start button is pressed, the MCU verifies the door switch is closed. If the switch is closed, the MCU sends voltage to the motor relay. The motor relay then energizes the motor, providing voltage to both the run and start windings. The start capacitor assists in providing an initial boost to the motor to initiate rotation. If any of these components fail, the dryer may click but not start.

Symptoms:

US Homeowner Observations.

The homeowner reports that when they press the start button on their Amana dryer, they hear a distinct clicking sound, but the dryer drum does not rotate, and the unit does not begin its drying cycle.

Possible Causes:

Faulty start capacitor
Defective motor
Failed door switch
Worn or broken drive belt
Clogged blower wheel
Faulty electronic control board (MCU)

Solution:

1

Unplug the dryer from the 120V AC outlet.
2

Disconnect the rear access panel. Use a 1/4-inch nut driver.
3

Check the drive belt for breakage or looseness. Replace if needed.
4

Inspect the door switch for continuity using a multimeter. Should read closed when the door is closed.
5

Test the start capacitor using a multimeter with capacitance function. A typical reading should be around 8-12 microfarads. Replace if out of spec.
6

Manually rotate the blower wheel to check for obstructions. Remove any lint or debris.
7

If the above checks out, the motor may be defective. A motor test requires specialized tools and should be done by a qualified technician.

Safety Warning:

Always disconnect power (Lock Out, Tag Out) before performing any repairs. Dryers operate on 120V AC, which can cause serious injury or death. If you are not comfortable working with electricity, consult a qualified appliance repair technician.

Prevention:

Regularly clean the lint filter after each drying cycle. Annually inspect and clean the dryer vent duct to prevent clogs and overheating. Check and replace the drive belt every 2-3 years as preventative maintenance.

Expert Tip:

On some Amana models, you can enter a diagnostic mode by pressing and holding the Start/Pause button for 5 seconds. This may display error codes that can further assist in troubleshooting.

Frequently Asked Questions

•How do I test the motor windings for continuity?

To test the motor windings, you'll need a multimeter. Disconnect the dryer from the power source and access the motor terminals. Set your multimeter to the ohms setting (resistance). Place one probe on each of the motor winding terminals (usually labeled). A reading close to zero or a very low number indicates good continuity. An open circuit (infinite resistance) indicates a break in the winding, meaning the motor is likely faulty. Consult the motor's wiring diagram for the exact terminals to test. Be very careful not to short any circuits or touch any live wires.

•Where is the start capacitor located in my Amana dryer?

The start capacitor is typically located near the motor, often behind a metal access panel. It's usually a cylindrical component. Refer to your dryer's service manual or parts diagram for the exact location. Always discharge the capacitor before handling it by shorting the terminals with an insulated screwdriver. This will prevent electric shock.

•How do I know if the electronic control board (MCU) is faulty?

Diagnosing a faulty electronic control board (MCU) can be challenging. First, verify that the board is receiving the correct input voltage (typically 120V AC) at the appropriate terminals. If the input voltage is present and all other components (door switch, motor, capacitor, etc.) have been tested and are functioning correctly, then the MCU may be the problem. However, MCU failures can manifest in many ways, and proper diagnosis often requires specialized testing equipment and expertise. Consulting a qualified appliance repair technician is recommended in this case.

Amana Dryer Clicking Sound When Starting: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the motor windings for continuity?

•Where is the start capacitor located in my Amana dryer?

•How do I know if the electronic control board (MCU) is faulty?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: