Pilot will not light (service flowchart)

What is going on

Step-by-step check when the pilot will not ignite. Same flowchart for direct vent, natural vent and vent-free units.

Likely causes

• No spark / loose electrode wire
• Low supply pressure
• Pilot adjustment screw closed
• Electrode gap too wide
• Blocked pilot orifice or tube
• Loose fittings or kinked/leaking pilot tube
• Blocked pilot primary air opening
• Damaged electrode

Check in this order

1. Press the igniter and confirm a spark at the electrode; if none, secure or replace the electrode wire connection.
2. Test the inline gas pressure to confirm enough supply pressure for ignition.
3. Make sure the pilot adjustment screw has not been turned fully closed; adjust as needed.
4. Set the electrode-to-pilot-hood gap to no more than 1/8".
5. Remove the pilot tube and orifice and clean out any packed debris.
6. Tighten the pilot tube fittings; WARNING: leak-test after.
7. Un-kink the pilot tube or replace it if leaking.
8. Clear the primary air opening on the pilot assembly.
9. Replace the electrode if chipped or broken.

More gas fireplace guides

• Blower noisy, vibrating or rattling
• Carbon / soot buildup (service flowchart)
• Carbon / soot on glass, logs or firebox
• Complete unit shutdown - direct vent
• Complete unit shutdown - natural vent / vent-free
• Delayed ignition of main burner