hi i have a gas fireplace which is operated by a key that turns the gas on and then you light it yourself. we are currenty having a storm but there is a ticking noise that is constant coming from where it appears to be the line to the logs. i called the fire department and they could not tell me what the noise could be coming from.
the first time it rained after we moved to ohio i heard a similar "tick" in the fireplace. sounded like water was dripping on top of the insert. turned out to be water dripping off the top of the chase for the fireplace and hitting the vent for the combustion air intake on the outside.