I've read on a number of threads that these snapstats are finicky, but... I just bought this insert brand new in mid-December (2014) and have probably only burned 30-40 days total. Does it seem "normal" for a snapstat to have failed already? I was sitting beside a blazing fire last night with the blowers on auto, and it just turned off. Works fine on manual... Thanks in advance for any thoughts on this.