If you have a gas furnace, try cleaning the flame sensor first. YouTube
can show you how.Our gas furnace had a strange wiring issue: We kept
having this problem intermittently and tried everything. Eventually we
ran a new wire from the flame sensor t...
Did you try removing the Y1 wire from the thermostat? If you AC still
cycles without the Y1 connected at the thermostat, could there be
something going on with the furnace or AC not related to the Nest?I
added some relays which only allow heat or coo...
There may be 2 issues with our furnace: 1) flame goes out within a few
seconds after lighting (and yellow flame sense LED does not turn on when
flame is present); or 2) flame starts OK and yellow LED lights but flame
turns off as soon as the blower k...
Finally cured our short cycling problem. Was blaming the Nest but it was
the furnace all along. Intermittent problem seemed to get better after
messing with Y1 or C wire, or mode setting. But short cycling would
eventually start again. We found a loo...
Finally cured our short cycling problem. Was blaming the Nest but it was
the furnace all along. Intermittent problem seemed to get better after
messing with Y1 or C wire, or mode setting. But short cycling would
eventually start again. We found a loo...