Honeywell Timer Switch Not Working. Replace the bulb with a new one. As the screen of your thermostat is not working, you have to forget about the screen first.

Your old mechanical clock not automatically catching up with seasonal clocks changes; You might think that this is a weird process but this works! I hooked it up initially and thought i was doing something wrong because it was not working, but after troubleshooting with a handyman, i have basically determined that the gfci in my garage is tripping whenever i hook up the switch.