Mine is at 68* all day erry day..... I'd double check that the furnace is lighting. My furnace will cycle every few minutes trying to re-light the flame, if it is a hsi on its way out, it will light every once in a while, and it will warm the house enough to not notice that it ain't working other than excessive running.
I had to take a midnight trip to the Southside Friday night because my hsi disintegrated.
I had to take a midnight trip to the Southside Friday night because my hsi disintegrated.