I know nothing about how the furnace or heating work in general, but I will try to explain my problem and I hope someone will be able to help me out.
So here we go... I turned on the heating this morning, set it to like 25 degrees celsia, while outside was like 5 above zero and our gas Furnace (maker: Clare) seemed to go on, but after a little while I realized it is blowing only a cold air. So I went to basement and checked the furnace pilot. It was on and burning.
I thought maybe furnace needs to be reset, so I turned off furnace power switch, waited couple minutes, then turned it back on, but it's a same problem. Pilot is on, but that coil in the furnace where gas goes to burn never fires up.
Anyhow, so I checked our air filters and there was a lot of dust on it... and I mean a lot... so I cleaned it properly, put it back, but when I turned air filter box on, that little led light doesn't light up and I can't recall if it did before or not. But before I could always hear like little sparks from this air filter and now it seems completely dead.
I wonder if the air filter and the fact that it might be damaged could somehow affect the furnace itself.
Please tell me what else I can try. I am no longer sure what is going on. Not sure if I should call a furnace repair man, or electrician or if there is anything else I can try.