I have a 1997 Goodman outside package combo propane/AC unit for my home. It performs well and this was about the second time I have called for heat as it gets colder out.
We had noticed in late afternoon yesterday that there was a 4 degree difference in the thermosat setting from the actual temperature which is more than normal. I checked our outside furnace and found that while the exhaust fan was running the furnace was not heating. I was close to calling a furnace repair company but after resetting the thermostat several minutes later everything was fine and has been since.
A year ago we had an issue with the propane supplier with low pressure in the underground lines that created a few similar issues but I can'r remember if it was the same exact issue.
My initial thought was that it was the electronic igniter which had been replaced about 2 years ago but now that every thing is back to normal I am not sure. My concern of course is that it may not have been low pressure and it could happen again perhaps when we are away. Of course if I call HVAC repair now there is nothing obviously wrong to fix. Does an igniter either work or not work and the fact that things are now fine eliminate that as a potential problem? Any other thoughts would be appreciated.