LG DLGX3571W Igniter Replacement – What OEM-Compatible Igniter Fits?
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Understanding the Problem
What this part does and why it fails: The igniter in an LG gas dryer is the component that glows hot to ignite gas flowing through the burner assembly. If it cracks, loses continuity, or fails to glow, the burner won’t light and the dryer will tumble without producing heat. Diagnostic & repair steps: 1) Confirm the symptom: dryer tumbles but no heat, or you hear clicking but no ignition; sometimes a faint gas smell may be present. Note any error codes on the dryer’s display. 2) Safety first: unplug the dryer and shut off the gas supply before opening panels. Turn the gas valve to OFF and disconnect power (unplug or switch off breaker). 3) Access the igniter: on most LG gas dryers (including DLGX-series) the igniter is behind the front or lower access panel near the burner tube. Remove the lint screen, then remove the top/front access screws and lift the top or remove the front panel to reach the burner box. 4) Visual inspection: look for cracked or broken ceramic on the igniter, discoloration, or broken wires. Also inspect the flame sensor/thermocouple and burner area for debris or lint buildup. 5) Continuity test: with the igniter unplugged from the harness, use a multimeter set to ohms. A good igniter typically shows low but finite resistance (commonly tens to a few hundred ohms). An open circuit (OL) indicates a failed igniter. If you see very high resistance or no continuity, replace the igniter. 6) Check related components: if the igniter tests good, check the thermal fuse (often mounted on the blower housing) for continuity, check the gas valve coils for continuity, and ensure the dryer is getting full-line voltage (240VAC for electric dryer controls; gas dryer still needs 120VAC). Faulty coils or a blown thermal fuse can prevent ignition even with a good igniter. 7) Replace the igniter: remove the igniter mounting screws and unplug the connector. Install the new igniter in the same orientation, secure screws snugly (do not overtighten ceramic), reconnect the wiring harness, and reassemble the panels. 8) Turn gas and power back on and test: restore gas and electricity, run a test cycle and observe ignition. The igniter should glow for several seconds and the burner should light. 9) If still not lighting: if the igniter glows but gas doesn’t flow, suspect faulty gas valve coils or a blocked gas orifice; if igniter doesn’t glow despite correct voltage, verify control board and wiring. Consider testing for voltage at the igniter during a start sequence (only if you are experienced and safe with live electrical testing). Safety note: always disconnect power and gas before servicing. If you are not comfortable working with gas connections or live electrical testing, hire a qualified appliance technician.
Common Symptoms
Dryer tumbles but no heat; igniter does not glow; clicking but no ignition; occasional gas smell; dryer runs but long cycles with no heat.
Common Causes
- Failed/ cracked igniter element (no continuity or won’t glow)
- Blown thermal fuse or faulty high-limit thermostat
- Bad gas valve coils or blocked burner orifice
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at ProsourceParts.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
To confirm a bad igniter quickly: remove power, unplug the igniter harness, and test for continuity with a multimeter. No continuity (open circuit) or visible ceramic cracks almost always means replace the igniter.
Frequently Asked Questions
How do I test the dryer igniter to see if it’s bad?
Unplug the dryer and access the igniter. Disconnect the igniter from its wiring harness and measure continuity with a multimeter set to ohms. A functional igniter will show a finite low-to-moderate resistance (often tens to a few hundred ohms). An open circuit (OL) or infinite resistance means the igniter is failed and should be replaced. Also inspect for visible cracks or a broken ceramic element.
Can I install an OEM-compatible igniter myself on an LG DLGX3571W?
Yes — if you’re comfortable with basic hand tools and following safety steps. Shut off gas and power, remove access panels to reach the igniter, unplug the harness, remove the old igniter, and install the new one in the same orientation. Reassemble, restore gas and power, and test. If you’re not comfortable working around gas lines or performing live electrical checks, call a licensed technician.
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