Fix Whirlpool Dryer No Heat Issue: A Simple Timer Switch Repair

Updated at: 24/03/2025

A Whirlpool dryer refusing to heat is a frustrating problem, leaving you with a pile of damp clothes and a growing sense of laundry-related despair. This common issue often stems from a surprisingly simple culprit: the timer switch. This seemingly insignificant component acts as the brain of your dryer's heating system, controlling the flow of electricity to the heating element. A faulty timer switch can prevent the dryer from heating properly, leading to inefficient and ineffective drying cycles. Fortunately, in many cases, this problem is easily fixable with some basic DIY skills. You don’t need to call a costly repairman to tackle this issue!

This article provides a clear and concise guide to diagnosing and repairing your Whirlpool dryer's no-heat problem by replacing the malfunctioning timer switch. We'll take you through a step-by-step process, complete with helpful images and tips, enabling you to get your dryer back up and running smoothly. Let's get started and reclaim your laundry routine!

Preparation and Safety Guidelines

Tools Needed
  • multimeter
  • sandpaper
  • Phillips screwdriver
  • Sharpie
Safety Guidelines
  • Always unplug the dryer from the power source before starting any repair work. Failure to do so could result in serious electric shock.
  • Wear appropriate safety glasses to protect your eyes from flying debris or sparks during disassembly.
  • If you are not comfortable working with electrical appliances or are unsure about any step, consult a qualified appliance repair technician.

Step-by-Step Instructions

  1. Preliminary Checks

    • Inspect the dryer's lint filter and heat sensor for clogs. Ensure airflow is unobstructed.
    Inspect the dryer's lint filter and heat sensor for clogs. Ensure airflow is unobstructed.
    Preliminary Checks

  2. Access the Timer Switch

    • Remove the back panel of the dryer to access the timer switch. This involves unscrewing the back panel and potentially disconnecting wires.
    Remove the back panel of the dryer to access the timer switch. This involves unscrewing the back panel and potentially disconnecting wires.
    Access the Timer Switch

  3. Remove the Timer Switch

    • Remove the timer switch. Note the orientation of the switch using a Sharpie to aid reassembly. Unscrew the two screws securing the timer switch.
    • Disconnect the wires from the timer switch, noting their positions.
    • Remove the timer switch knob. Then, unscrew the two screws holding the timer switch together.
    Remove the timer switch knob. Then, unscrew the two screws holding the timer switch together.Remove the timer switch knob. Then, unscrew the two screws holding the timer switch together.Remove the timer switch knob. Then, unscrew the two screws holding the timer switch together.Remove the timer switch knob. Then, unscrew the two screws holding the timer switch together.
    Remove the Timer Switch

  4. Inspect and Clean the Switch

    • Inspect the contact points on the timer switch for any signs of damage, corrosion, or debris. The most effective way is to check the contact between pins A and C which is responsible for the heating element.
    • Clean the contact points using fine-grit sandpaper. Gently remove any debris or discoloration to ensure proper contact.
    Clean the contact points using fine-grit sandpaper. Gently remove any debris or discoloration to ensure proper contact.Clean the contact points using fine-grit sandpaper. Gently remove any debris or discoloration to ensure proper contact.Clean the contact points using fine-grit sandpaper. Gently remove any debris or discoloration to ensure proper contact.
    Inspect and Clean the Switch

  5. Test and Reassemble

    • Reassemble the timer switch and test the continuity of the contacts using a multimeter in ohms mode. Ensure that the continuity is correct when the switch is in the "Time Dry" position.

  6. Reinstall and Test Dryer

    • Reinstall the timer switch in the dryer, reconnect the wires, and reassemble the back panel.
    • Test the dryer by running a cycle on "Time Dry" and monitoring the heating element’s operation. Observe whether heat is generated.
    Test the dryer by running a cycle on "Time Dry" and monitoring the heating element’s operation. Observe whether heat is generated.Test the dryer by running a cycle on "Time Dry" and monitoring the heating element’s operation. Observe whether heat is generated.
    Reinstall and Test Dryer

Read more: Fix Washing Machine Won't Spin: Quick & Easy Motor Coupler Replacement

Tips

  • Always disconnect the power to the dryer before working on any internal components.
  • Take photos or videos during disassembly to help with reassembly.
  • Use caution when working with electrical components. If uncomfortable, seek professional help.

Common Mistakes to Avoid

1. Incorrect Timer Switch Replacement

Reason: Using the wrong timer switch model for your specific dryer model, leading to incompatibility and continued lack of heat.
Solution: Ensure you purchase the exact replacement timer switch model number specified in your dryer's repair manual or parts diagram.

2. Improper Wiring Connections

Reason: Loose or incorrect wiring connections after installing the new timer switch can result in the dryer not heating properly or causing electrical hazards.
Solution: Double-check all wiring connections against the wiring diagram and ensure they are securely fastened.

3. Ignoring Other Potential Issues

Reason: Focusing solely on the timer switch when the problem might be caused by a faulty heating element, thermal fuse, or high-limit thermostat.
Solution: If replacing the timer switch doesn't solve the no-heat problem, thoroughly test other dryer components before concluding it's the timer.

FAQs

My Whirlpool dryer isn't heating, but the motor is running. Is it definitely the timer switch?
While a faulty timer switch is a common cause of no heat in a Whirlpool dryer, other components like the thermal fuse, heating element, or high-limit thermostat could also be the problem. If the motor runs but there's no heat, the timer switch is a likely suspect, but you should visually inspect the other components before replacing the switch to ensure you're addressing the root cause.
I've replaced the timer switch, but my dryer still isn't heating. What should I do?
If replacing the timer switch didn't resolve the no-heat issue, other components may be faulty. Check the continuity of the heating element and the thermal fuse with a multimeter. A faulty high-limit thermostat can also prevent the dryer from heating. If you're uncomfortable testing these components, it's best to consult a qualified appliance repair technician.