2-Stage Thermostat Slow to Heat
We just had a new Trane XV80 2-stage variable speed furnace installed. My issue is that it never goes into the 2nd stage. This morning it took 55 minutes to heat up our house 3 degrees, from 64 to 67 degrees. It still had another 3 degrees to go. I would think that it would know if it was taking too long to kick into the 2nd stage to speed things up. I hardly think it should take almost 2 hours to heat up a house by 6 or 7 degrees. Thermostat is a Trane XL802, which is a 3-stage heating thermostat, and it seems to be wired correctly. Ideally I would just want it to use the 2nd stage when it takes a long time to heat, or be able to manually set it to temporarily use the 2nd stage. Any advice? Thanks so much. And btw, we live in Northern California and it was maybe 48 degrees outside.