To replace a dryer flame sensor, confirm the igniter glows but the burner does not light, then unplug the dryer, shut off gas, open the burner access area, swap the matching sensor, and test for normal ignition.
A flame sensor is a small burner-side part, but this is still a gas-appliance repair. Keep the gas valve off while the cabinet is open, match the connector and mounting bracket exactly, and stop if you smell gas or find burned wiring.
Before you start: Match the sensor rod shape, mounting bracket, connector, and dryer model before ordering. Stop if you smell gas, find burned wiring, cannot fully close the gas shutoff, or see damage around the burner housing.
Before replacing the dryer flame sensor, confirm the ignition clue and the exact sensor fit. Do not buy a sensor just because the dryer has no heat.
This page fits when: The igniter glows but the burner does not light, or the sensor is visibly cracked, loose, heat-damaged, or not reading flame correctly.
Check something else when: If the igniter never glows, the repair path is wider than the flame sensor and should be diagnosed before buying parts.
This page fits when: You can match the dryer model, mounting bracket, connector, wire length, and sensing rod position against the old sensor.
Check something else when: If the connector, bracket, or sensing rod does not match, stop and identify the correct part before reassembly.
This page fits when: The burner area is clean, the gas shutoff closes fully, wiring is intact, and the sensor mount is not rusted through.
Check something else when: Stop if you smell gas, see burned wiring, find a crumbling connector, or cannot shut off the gas valve completely.
Use the burner-side clue and dry-fit check to confirm the dryer flame sensor is the right repair. Compare the bracket, connector, wire route, and sensing tip before fastening anything.
Use it for: To remove the access panel, burner cover, and sensor mounting screws.
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Use it for: Many dryer panels and burner parts use small hex-head screws.
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Use it for: To protect your hands from sharp sheet metal edges inside the dryer.
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Use it for: To see the burner assembly, wire connector, and mounting points clearly.
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Use it for: To help disconnect a tight wire terminal without pulling on the wire itself.
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If it works: The symptom points to the burner ignition circuit, so inspect and match the flame sensor before ordering.
If it doesn’t: If the dryer has no power, will not start, or is an electric model, stop and diagnose that issue first.
If it works: The dryer is unplugged, the gas supply is off, and you can see or reach the burner housing.
If it doesn’t: If access is too tight, move the dryer farther out and improve your lighting before continuing.
If it works: The old sensor is out, and the new sensor matches the mounting style, connector, and sensing tip layout.
If it doesn’t: If the new part does not match, pause and verify fit before installing anything.
If it works: The new sensor is mounted securely, connected properly, and positioned like the original.
If it doesn’t: If the connector feels loose, inspect the terminal fit and correct it before reassembling the dryer.
If it works: The dryer is fully reassembled and ready for a live heat test.
If it doesn’t: If a panel does not fit back correctly, remove it and check for a trapped wire or misaligned tab.
If it works: The burner ignites normally and the dryer produces steady heat in real use.
If it doesn’t: If the igniter still glows without flame, keep the gas shutoff accessible. Continue diagnosis at the gas valve coils, igniter circuit, thermal devices, or wiring.
Match the dryer model number, mounting bracket, connector, wire length, and sensing rod position before ordering.
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It helps the dryer confirm heat and flame conditions at the burner. If it fails, the burner may not ignite properly even though other parts of the ignition system are trying to work.
A common clue is that the igniter glows but the burner does not light. Watch only through a safe inspection opening, and keep panels closed during live observation. If the igniter never glows, the problem may be elsewhere, including the igniter itself, a thermal device, wiring, or another part of the ignition circuit.
Yes, many homeowners can handle it if they are comfortable removing access panels and working carefully around a gas appliance. The key is to unplug the dryer, shut off the gas, and avoid forcing parts or connectors.
Not necessarily. Replace the igniter only if testing or symptoms point to it. If the igniter is working and the flame sensor is the failed part, replacing just the sensor is usually enough.
The next likely causes can include weak gas valve coils, a failed igniter, an open thermal fuse or thermostat, wiring trouble, or poor airflow. Keep the gas shutoff accessible during any follow-up testing, and stop if you smell gas or see heat damage.
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