M1010 Mike
Senior Member
I had the same problem with my Honeywell digital thermostat not working properly below 40 deg. Fan would come on but wouldn't ignite the burner. I called Honywell and they told me they are not designed to work below 40 deg. I have gone back to my mech style and I now have heat when it is in the 20's and 30's. Nice.
Humm.... interesting. I can't remember how cold it was when we tried it. I don't think it was below 40 but I'll have to check into that idea.
Humm.... interesting. I can't remember how cold it was when we tried it. I don't think it was below 40 but I'll have to check into that idea.