turned on my gas furnance for the ground level of 2story house yesterday and it just kept going never turning off, so i tried to lower the temp, but it the t-stat seemed to intermittenly go on and off? so I turned it off. Today I turned on the t-stat but it seems like it would not turn on the furnace, when I turned the temp up it appears to flash and click off. If i jiggle the thermostate it appears to try to turn on and off. I have a LUX 1500 digital t-stat that I put in about years ago, is this my problem? I also personally changed the motherboard on the furnace as well about 2 years ago.
Thanks for anyone who can help,