Honeywell Thermostat Troubleshooting

68 or 70? The oven (heat, high efficiency gas) and Lennox just put a new filter in. Everything is about 6 years, so its still relatively new. I know there is a site for troubleshooting thermostats, but you want an opinion too. We tried to programming and is also "hold temp. Neither one really works. Cycles oven for a minute or two. Sometimes it doesn't even" heat ". I do not really want call a pro "if I'm not, who can afford it? Ideas? I also put new batteries in the programmable thermostat.

This is probably not the thermostat is causing the problem. Sounds like the oven is trying to run, but was cut on some security devices. Under the oven there are many different devices that could prove to be cleaned and / checked. one thing you can do is remove the lid from the tstat and take an alligator clip and jump from red to white which should bypass the tstat. if you still have no heat, so this is probably not the thermostat

Honeywell makes a number of programmable thermostats. You can have a wiring problem. If you remove all the son of the base under the rider of the red and white son. This should start the oven and continue to function until you remove the jumper. This will pose the problem is in your thermostat. If the same problem is experienced when the jumper is installed, the problem is in the electronics of the furnace, and require an expert. Be careful.

Most Honeywell thermostats have a "system" portion of the screen. Is it still on? Sound like either you have heat blowing on the thermostat, or it is in fact the furnace that is failing for some reason. Is there an error code that emits an audible signal on the LED screen to stop the oven? Check the furnace to see what it could be.

the Honeywell web site has a troubleshooting wizard online that i recall try. It crossed my things with mine.