My gas fireplace pilot is lit but the main burner won't come on — what's wrong?
Many Flat Rock fireplaces are sealed gas inserts fitted into oversized 1800s masonry openings, and when one lights the pilot but won't fire the burner, the fault is almost always inside that insert — most often a worn thermopile, sometimes the switch or valve. It's an inexpensive fix, and one we handle without disturbing the historic firebox.
Historic homes, modern inserts
Flat Rock's Historic Flat Rock and Kanuga homes date to the 1800s, with big open hearths and aging clay flue liners that pulled cold drafts into rooms for generations. The common fix here has been a sealed gas insert that preserves the mantel and stonework while adding real, controllable heat. That means the part that fails is modern even when the house isn't: the insert's thermopile, the pilot-heated sensor that makes the low voltage your main valve needs. Years of use wear it down until it proves the pilot but can't open the burner valve — your exact symptom.
Ruling out the switch and the valve
Before we call it, we trace the whole low-voltage circuit — the wall switch, any remote receiver, and the wiring — because a corroded contact anywhere along it produces the same dead-burner result as a tired sensor. Now and then the gas valve itself has failed internally. In the Highland Lake and Kanuga homes we take extra care working around the original mantels and stonework, since the value here is in the historic firebox we are protecting while we service the modern insert inside it. All of it is diagnosable in one visit with a meter, and Flat Rock sits on the natural-gas main, so this is about the appliance, not the fuel supply.
Henderson County, 30 minutes south
Repairing a gas valve or extending a line to one of these historic homes is licensed work in North Carolina; a mason can rebuild your firebox but legally can't connect it to fuel, and we won't hand out DIY steps. When the work reaches the piping, we pull the Henderson County permit and meet the inspector. Call (828) 545-0525.
Fireplace help in Flat Rock
We install and service fireplaces throughout Flat Rock and the rest of Henderson County — just 30 minutes south from our Asheville-area showroom.