If you are able to get the pilot light on in your fireplace but the pilot light will not stay on, then there is a strong chance that the gas fireplace thermocouple will need to be replaced (or batteries in the receiver – if an IPI fireplace).
A fireplace thermocouple is a metal sensor about the size and shape of a sharpened pencil that heats up by direct contact with the pilot light’s flame, telling your gas valve that the pilot light is lit so it’s safe to open the valve to let gas flow.
Because a thermocouple (and thermopile) are both designed to be engulfed by your pilot light’s flame at all times, it’s natural that carbon deposits from that burn will build up over time, limiting their effectiveness. Both probes are relatively easy and cheap to replace, but it’s much faster and cheaper to try cleaning them first.
If your fireplace has not been cleaned and serviced in the past year by a fireplace professional, it may require a simple cleaning. If it has, then maybe replacing the thermocouple will solve it.
Friendly Fires stocks many different thermocouples, and can order in a specific one if we do not have it in stock. Please bring in make, model & serial number, and / or the thermocouple that needs replacing.