How do I fix Whirlpool Dryer Flame Sensor Replacement - Signs & How-To?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for Whirlpool Dryer Flame Sensor Replacement - Signs & How-To?

The most frequently replaced parts for Whirlpool Dryer Flame Sensor Replacement - Signs & How-To are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is Whirlpool Dryer Flame Sensor Replacement - Signs & How-To a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

Whirlpool Dryer Flame Sensor Replacement - Signs & How-To

Q: What does Whirlpool Dryer Flame Sensor Replacement - Signs & How-To mean?

A failed flame sensor stops your Whirlpool gas dryer from heating. Replace the radiant flame sensor (WP338906) to restore burner ignition.

Whirlpool Dryer Flame Sensor Replacement — What This Part Does

The flame sensor (also called a radiant flame sensor) is a burner-safety switch mounted on the burner tube opposite the igniter. It stays closed at room temperature to allow the burner circuit to complete. When the igniter heats up and the flame lights, the sensor opens to monitor the burner. If the sensor fails open at rest, the igniter and gas valve sequence cannot operate and the dryer will not heat.

Most flame sensors fail because their internal contacts no longer close when cold. Loose or corroded wire terminals at the sensor can also interrupt continuity. Physical damage or mispositioning from prior service can prevent the sensor from reading the igniter or flame correctly. The part itself is inexpensive, but misdiagnosis is common because other burner components can cause identical no-heat symptoms.

Jump to Replacement Steps

Signs It Needs Replacing

Dryer runs but produces no heat The drum tumbles and the motor runs, but clothes stay cold or damp after a full cycle.
Igniter glows but gas valve never clicks You see the igniter element glow orange for a few seconds, then it shuts off without the burner lighting.
Burner lights briefly then drops out The flame ignites for a moment and then extinguishes, repeating the cycle without maintaining heat.
Flame sensor reads open at room temperature With one wire disconnected and a multimeter across the sensor terminals, you measure infinity or no continuity instead of 0 ohms.
Clicking or relay cycling at the burner area You hear the gas valve or igniter relay cycle on and off, but the burner never stays lit.
Error codes or control-board fault lights Some Whirlpool models display fault codes related to flame-sensing or burner-ignition failures on the control panel.

How to Replace It

Unplug the dryer from the wall outlet and shut off the gas supply valve at the dryer connection.
Remove the cabinet front or top panel and pull the drum forward as needed to access the burner assembly (consult your model’s service manual for disassembly).
Locate the flame sensor on the burner tube opposite the igniter (it has two wire terminals and is held by one mounting screw).
Disconnect one wire terminal from the flame sensor and use a multimeter set to ohms to measure continuity across the two sensor terminals.
If the sensor reads infinity or open circuit at room temperature, it has failed and must be replaced (a good sensor reads 0 ohms when cold).
Remove the mounting screw and pull the old flame sensor off the burner tube bracket.
Position the new flame sensor in the same location on the burner tube, secure it with the mounting screw, and reconnect both wires (polarity does not matter).
Reassemble the drum, cabinet panels, and any trim pieces in reverse order.
Turn on the gas supply valve, plug in the dryer, and run a heated cycle to verify the burner ignites and maintains flame.

The Part You Need

Part	Notes
Whirlpool flame sensor WP338906	Amazon \| Replaces part numbers 338906, 14205529, and 14210083. Verify compatibility using the model and serial number on the dryer’s data plate (usually inside the door opening or on the back panel). Fits many Whirlpool, Kenmore, and Maytag gas dryer models.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you are not confident working around gas connections, call a qualified appliance technician to diagnose and replace the flame sensor. If the new sensor does not restore heat, the problem may be the igniter, gas valve coils, thermal fuse, high-limit thermostat, or control board. Professional burner-circuit diagnosis with a multimeter and gas-pressure gauge is recommended when multiple components are suspect. Any work involving gas-line disconnection or burner removal should be performed by a licensed technician. For gas line, burner, or igniter work, or if you ever smell gas, stop and call a licensed technician.