Why does my gas fireplace shut off by itself after a few minutes?
Out in Leicester's rural valleys, where many large properties run on propane and some remote homes have limited electrical capacity, gas fireplaces often use a millivolt standing-pilot system with no circuit board. When one lights and quits minutes later, the thermocouple simply isn't holding the valve open.
Millivolt systems and why they fail this way
A millivolt fireplace makes its own tiny voltage off the pilot heating the probe — that's the very reason it can run without house power, which matters on Leicester properties where electrical capacity is thin. But it also means a weak or dirty pilot has nothing to fall back on: the instant the probe cools, the valve closes. A cleaning and a millivolt test usually pin it down and settle it for a small part.
Propane and cold-air drainage
Cold-air drainage runs these rural valleys 5 to 8 degrees colder than Asheville on clear winter nights, and on propane, deep cold plus a low tank can sag the pilot pressure right when demand peaks. Sandy Mush and Turkey Creek homes leaning on propane and wood alike see this most. Buncombe County is home turf for us, and connecting or servicing a propane system is licensed gas work — permitted and pressure-tested when a line's involved.
Licensed repair, 15 minutes west
We're 15 minutes west of our Asheville showroom, so even the more remote Newfound Road and Sandy Mush properties are a short drive. The fix is quoted before we start. Call (828) 545-0525.
Fireplace help in Leicester
We install and service fireplaces throughout Leicester and the rest of Buncombe County — just 15 minutes west from our Asheville-area showroom.
Related questions
- Why does my gas fireplace pilot light keep going out?
- Why does the pilot go out as soon as I release the control knob?
- What is a thermocouple and how do I know if mine is failing?
- Why does my gas fireplace run for 20–30 minutes and then shut down?
- Why does my gas fireplace shut down in windy or snowy weather?