Hellman31
Sep 28, 2009, 07:04 PM
When I turn my thermostat to AUTO, the COOL light flashes, and the heat won't come on. The furnace works if I play with the settings, but I want the system in AUTO. The book says to wait at least a half an hour, for the system to change itself, but Iv'e waited 2 hours and no change. Any ideas?