Why is my heat on light flashing on my thermostat?
Why is my heat on light flashing on my thermostat? If you see a flashing light on your thermostat, that's a signal that there's a problem with your outdoor unit. When this happens, your outdoor unit will shut off and send a signal to your thermostat, causing it to blink. Thing is, that signal doesn't mean your indoor unit is made aware of the problem. How do I stop my Honeywell thermostat from blinking? Honeywell Thermostat Flashing “Cool On” Troubleshooting GuideWhat does it mean? Troubleshooting Steps. Crank thermostat down to the lowest temperature. Check the mode on your thermostat. Change...