This seems to happen every time I go from AC to heat:
It seems to be an original coleman 90 series forced air system and the home is about 20 years old. I go to the basement, turn a few items from cool to heat then switch the thurmostat from off to heat. I hear the system turn on and I also hear the electronic pilot try to ignite...but it is not turning over and producing hot air (for lack of proper terms).
This took a few days to eventually correct itself last year. One evening, I just turned it on and finally heard it ignite and start to blow hot air.
Any idea what I am doing wrong? Or where I should start trouble shooting?
Getting a technician to the house will take over a week and it's getting cold out.
Any directions/assistance would be greatly appreciated.