How do I determine if it is the furnace or the thermostat that is bad?
I have a 0960 Maple Chase thermostat and a Carrier furnace. 16 years old. It will not stay on. I push the reset on the thermostat, it comes on but does not stay on. It comes on in the morning as set sometimes,not every morning. I also push the reset button on the furnace and flick the on/off switch. It comes on but will not continue to run. I changed the filters, the ignitor has been changed 3 times, electronic board changed in 2004. I am freezing. If I need to replace the thermostat, what do I look for, brand wise. Also, in resetting the thermostat, holding down the button to change time, does not move at all. New batteries installed. Thanks for any help you can give me. Oonie