DIYbanter - View Single Post

wrote:
My digital thermostat does not seem to be working. It will not click on
to tell my furnace to heat the house. I have replaced the batteries and
that didnt help, checked all my breakers and they are all fine. I use
hot water to heat my house and i am still getting hot water so i am
sure that it is probably not a problem with the furnace itself. any
suggestions? it is 4am here on a sunday morning and i dont want to call
in a service repairman if it is something that i could do myself and
that i may not be thinking of checking. any suggestions would be
appreciated.

Hi,
If your furnace is newer kind, it'll show error(trouble) code.
Or can you check if you have 24V AC tranny output to control the
furnace?