Pilot goes out when the gas knob is released

What is going on

Pilot lights but will not stay lit after the knob is let go. Note: the valve has an interlock that will not let the pilot relight until the thermocouple cools - wait about 60 seconds between attempts.

Likely causes

• Gas line not purged (air in line)
• Propane tank empty
• Pilot flame too small
• Pilot flame not wrapping the thermocouple
• Thermocouple shorted or faulty
• Faulty gas valve

Check in this order

1. Before troubleshooting, purge the gas line and do the first light-up of pilot and main burner with the glass door open.
2. Wait about 60 seconds after a failed attempt so the thermocouple cools and the interlock releases.
3. Propane units confirm the tank has gas; refill if empty.
4. Turn up the pilot flame with the pilot adjustment screw if it is too small.
5. Gently twist the pilot head so the flame properly engulfs the thermocouple.
6. Loosen and re-tighten the thermocouple at the valve; clean the thermocouple and valve connection.
7. If it still drops out, replace the thermocouple. WARNING: use only the fast-acting thermocouple supplied by Wolf Steel - it is a safety component.
8. If a new thermocouple does not fix it, replace the gas valve.

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