I have a Classic Bay 1200 insert which worked great last season. I tried firing it up this morning, but no red light - as if the thermostat wasn't "calling" for heat. The blue light was flashing and the blower was working each time the reset button was pushed, but no pellets - and no flame or heat. It does have the wireless thermostat on it, which seems to work from the handset. Should I change the batteries in it and try it again? The manual stated various items to check, one of which is snap disc #3 - how does one reset this? Thanks for any and all suggestions!