Whirlpool Dryer TEST4101 Timer will not advance

This Dryer Cycling Thermostat is an OEM replacement part for Whirlpool dryers. It monitors internal temperatures and cycles power to the heating element accordingly. The thermostat ensures the drying air reaches and maintains the optimal heat level selected for fast, effective drying results.

Symptoms of a bad cycling thermostat include:

• The dryer not heating or heating inconsistently  
• Frequent trips of the circuit breaker
• Slower than normal drying times
• Burned clothes due to overheating

Causes of failure may be related to normal wear over time, dust buildup affecting sensor readings, or incorrect thermostat calibration. 

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

Stop dryer downtime in its tracks — install the Whirlpool WP3392519 OEM Thermal Fuse in minutes.

OEM Quality Fast 1–2 Day Shipping* Free Tech Help

Why choose this fuse?

• Guaranteed OEM: built by Whirlpool to Whirlpool specs — no risky aftermarket clones.
• Broad compatibility: works with Whirlpool, Kenmore, Maytag, KitchenAid, Roper & more.
• Quick delivery: over 94 % of APP orders arrive in 2 days or less.

Fixes these common dryer problems

4-step DIY installation (≈10 min)

1. Unplug dryer and remove rear panel.
2. Locate thermal fuse on blower housing.
3. Transfer wires; secure new fuse with ¼-inch nut-driver.
4. Clean the vent & lint path before testing to prevent repeat failure.

*Video tutorial below.

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The Dryer Gas Valve Coil Kit is an OEM replacement part for Whirlpool dryers, as well as Kenmore and Samsung dryers. It is a set of coils that control the flow of gas fuel to the burner. The gas valve regulates the precise amount of gas needed to properly combust and generate heat for drying clothes. 

Causes of a bad gas valve coil can be wear and tear from regular use, lime or mineral buildup on the coils over time, or physical damage to the coils.

Symptoms of a bad gas valve coil kit include:

• Inconsistent or incomplete drying  
• Slow or intermittent drying
• Burning smell from the gas dryer
• Improper burner ignition or non-ignition

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

This replacement timer restores accurate, dependable timing for your appliance's functions. If the original timer sticks, fails to advance, or delivers inconsistent results, installing this part brings back proper countdown and time-based control.

• Regulates time-based operations or countdown features depending on the model
• Switches circuits on/off based on elapsed time to keep functions on schedule
• Accepts a user-set duration via dial/knob or panel input
• Typical failure symptoms: time does not advance, dial won't turn or sticks, erratic timing, clicking/buzzing, or no response when set

• Disconnect power to the appliance before servicing; shut off gas supply if applicable
• Access the control area, note or photograph wire positions, and transfer wires to the new timer one at a time
• Reuse the existing knob, bracket, and mounting screws from your unit as needed
• After installation, verify the timer starts, advances, and signals completion before reassembling fully