Complete unit shutdown - direct vent

What is going on

Burner (and often pilot) shut down; flame goes blue and see-through before going out - a venting/recirculation fault.

Likely causes

• Leaking seals at vent, door, relief doors, burner or pilot
• Missing 2nd storm collar on vertical terminal
• Blocked termination
• Unsealed inner/outer vent joints
• Vent length/rise outside spec

Check in this order

1. If the flame does not go blue first, use the Pilot Failure guide instead.
2. Check seals on vent, main door, relief doors and around the burner and pilot assembly; reseal or replace (use the paper gasket test).
3. Vertical termination add the 2nd storm collar per the manual diagrams.
4. Clear any blockage or obstruction at the terminal.
5. Seal all inner and outer vent pipe joints.
6. Confirm vent length and rise are within the fireplace and code limits; correct as needed.

More gas fireplace guides

• Blower noisy, vibrating or rattling
• Carbon / soot buildup (service flowchart)
• Carbon / soot on glass, logs or firebox
• Complete unit shutdown - natural vent / vent-free
• Delayed ignition of main burner
• Exhaust fumes smelled in room / occupants get headaches