Tutorial Whirlpool Dryer Start Switch Test: A Comprehensive Guide

A faulty start switch can prevent your Whirlpool dryer from starting, leaving you with a pile of wet clothes and a frustrating situation. Testing the start switch is a crucial step in diagnosing and repairing this common issue. This comprehensive guide will walk you through the process of testing a Whirlpool dryer start switch step by step, empowering you to troubleshoot and fix the problem efficiently.

Understanding the Whirlpool Dryer Start Switch

The start switch is an essential component of your Whirlpool dryer’s control system. When you press the start button, this switch completes the electrical circuit, sending power to the motor and starting the drying cycle.

Tools and Materials You’ll Need

• Multimeter
• Screwdriver (Phillips head)
• Safety glasses
• Gloves (optional)

Safety Precautions

• Unplug the dryer from the power outlet before performing any testing or repairs.
• Wear safety glasses to protect your eyes from flying debris.
• Use gloves to avoid electrical shocks or cuts.

Step-by-Step Testing Instructions

1. Remove the Front Panel

• Use a Phillips head screwdriver to remove the screws holding the front panel in place.
• Carefully lift the panel off and set it aside.

2. Locate the Start Switch

• The start switch is typically located near the top of the dryer’s control panel.
• It may be a push-button or a rotary switch.

3. Disconnect the Start Switch

• Use a screwdriver to disconnect the wires connected to the start switch.
• Note the position of the wires so you can reconnect them correctly later.

4. Set the Multimeter to Continuity Mode

• Turn the multimeter to the continuity mode, usually indicated by a symbol resembling a sound wave.
• Connect one probe of the multimeter to one terminal of the start switch.

5. Test the Switch

• Press the start button or rotate the switch to the “Start” position.
• Touch the other probe of the multimeter to the other terminal of the start switch.

6. Observe the Multimeter Reading

• If the multimeter displays a reading close to zero ohms, the switch is working properly.
• If the multimeter displays an infinite reading (OL), the switch is open and needs to be replaced.

7. Reconnect the Wires and Reassemble

• If the switch is working, reconnect the wires to the terminals and reassemble the dryer.
• If the switch is faulty, replace it with a new one and reassemble the dryer.

Troubleshooting Tips

• If the multimeter reading is not consistent, check the connections and wires for loose or damaged contacts.
• If the switch is open, ensure that the dryer is not overloaded or that there are no obstructions in the dryer vent.
• If the switch is working but the dryer still doesn’t start, check other components such as the motor or the thermal fuse.

Key Points

Testing a Whirlpool dryer start switch is a straightforward process that can help you diagnose and repair a common problem. By following these step-by-step instructions, you can quickly determine if the start switch is functioning correctly and take the necessary steps to restore your dryer to working order.

Basics You Wanted To Know

1. Can I test the start switch without a multimeter?

Yes, you can test the start switch by listening for a click when you press the start button. If you don’t hear a click, the switch may be faulty.

2. What if the start switch is working but the dryer still doesn’t start?

Check other components such as the motor, the thermal fuse, or the dryer vent for potential issues.

3. How often should I test the start switch?

Regular testing is not necessary unless you suspect a problem with the switch or the dryer’s performance.

4. Is it safe to replace the start switch myself?

Yes, replacing the start switch is a relatively simple repair that can be done by most homeowners with basic electrical knowledge.

5. Where can I find a replacement start switch for my Whirlpool dryer?

Replacement start switches can be found at appliance parts stores or online retailers.