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Unlock peak dryer performance: the step-by-step guide to coil testing

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er,...

What To Know

  • Locate the access panel on the front or back of the dryer and remove it to expose the coils.
  • Touch one probe to the terminal on the secondary coil that is connected to the spark plug.
  • If the dryer is not used frequently, run it for a short cycle every few weeks to keep the coils in working condition.

Gas dryers are an essential appliance in many households, providing a convenient way to dry clothes quickly and efficiently. However, like any appliance, gas dryers can occasionally experience issues, and one common problem is malfunctioning coils. Testing gas dryer coils is a crucial step in diagnosing and repairing these issues, ensuring that your dryer operates safely and effectively. In this comprehensive guide, we will explore the methods for testing gas dryer coils, providing step-by-step instructions and troubleshooting tips to help you identify and resolve any problems.

Understanding Gas Dryer Coils

Gas dryer coils are an essential component of the gas dryer’s ignition system. They are responsible for creating a spark that ignites the gas, initiating the drying process. Gas dryer coils consist of two main parts:

  • Primary coil: This coil receives electrical current from the ignition switch and creates a magnetic field.
  • Secondary coil: This coil is wrapped around the primary coil and produces a high-voltage spark when the magnetic field collapses.

Materials Required for Testing

Before beginning the testing process, gather the following materials:

  • Multimeter
  • Wire strippers
  • Screwdriver

Step-by-Step Testing Instructions

1. Disconnect the Dryer from Power

For safety reasons, always unplug the dryer from the power outlet before performing any testing or repairs.

2. Access the Coils

Locate the access panel on the front or back of the dryer and remove it to expose the coils.

3. Test the Primary Coil

  • Resistance test: Set your multimeter to the ohms setting. Touch one probe to each terminal of the primary coil. A reading between 500 and 1500 ohms indicates a good coil.
  • Continuity test: Touch one probe to each terminal of the primary coil. The multimeter should beep, indicating electrical continuity.

4. Test the Secondary Coil

  • Resistance test: Set your multimeter to the ohms setting. Touch one probe to the terminal on the secondary coil that is connected to the spark plug. Touch the other probe to the coil’s metal frame. A reading between 5,000 and 15,000 ohms indicates a good coil.
  • Spark test: Disconnect the spark plug wire from the spark plug. Hold the wire about 1/4 inch away from the metal frame of the dryer. Turn on the ignition switch. If a spark is produced, the secondary coil is working properly.

5. Troubleshooting

  • No spark: If there is no spark, check the following:
  • Power supply to the dryer
  • Electrical connections to the coils
  • Continuity of the primary coil
  • Weak spark: If the spark is weak, the secondary coil may be malfunctioning. Replace the secondary coil.

Replacing the Coils

If the coils fail the tests, they will need to be replaced. Follow these steps:

  • Disconnect the dryer from power.
  • Disconnect the wires from the coils.
  • Remove the mounting screws and pull out the coils.
  • Install the new coils and tighten the mounting screws.
  • Reconnect the wires.

Tips for Maintaining Gas Dryer Coils

  • Keep the dryer clean to prevent lint buildup, which can damage the coils.
  • Inspect the coils regularly for any signs of damage or wear.
  • If the dryer is not used frequently, run it for a short cycle every few weeks to keep the coils in working condition.

Final Note: Ensuring Optimal Dryer Performance

Testing gas dryer coils is a crucial part of maintaining the optimal performance of your dryer. By following the steps outlined in this guide, you can effectively diagnose and resolve any issues with the coils, ensuring that your dryer operates safely and efficiently for years to come. Remember to always prioritize safety by unplugging the dryer before performing any testing or repairs. With regular maintenance and care, your gas dryer will continue to provide you with the convenience and efficiency you need for your laundry needs.

Frequently Asked Questions

Q: Why is my gas dryer not igniting?
A: Malfunctioning coils can be a common cause of ignition issues. Test the coils using the methods described in this guide to determine if they need to be replaced.

Q: How often should I test the gas dryer coils?
A: It is recommended to test the coils annually or if you notice any signs of reduced dryer performance.

Q: Can I test the coils without a multimeter?
A: Yes, you can perform a spark test to check the secondary coil. However, a multimeter is recommended for accurate resistance testing.

Q: What are the signs of a faulty gas dryer coil?
A: Weak or no spark, inconsistent ignition, and reduced dryer performance.

Q: Can I replace the coils myself?
A: Yes, replacing gas dryer coils is a relatively straightforward task. Follow the steps outlined in this guide, ensuring that the dryer is disconnected from power and that all electrical connections are secure.

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Rob Sanders

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er, Rob takes pride in testing out the latest tools and gadgets to see how they can make home projects easier. When it comes to heating systems, he's evaluated over 50 different furnace and boiler models over the years. Rob founded Nurturing Homeaid with his business partner Jim in 2020 to provide homeowners with genuine product recommendations they can trust. In his free time, Rob enjoys remodeling old homes with his family and traveling to visit architectural landmarks across the country. He holds a bachelor's degree in Journalism from Syracuse University.
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