When there is no power supply, it may lead to the blinking of your honeywell.

Honeywell thermostat screen flashing. One of the most common causes of thermostat blinking is a power outage. After that, taking the coin, you have to. In order for your honeywell thermostat to work properly, the.

Crank thermostat down to the lowest temperature. Click the ‘system’ which is displayed on the screen. All you have to do is get to the battery for your thermostat.

To check this, turn down your thermostat to. Hold the central blank button for few. The “cool on” message will appear on your honeywell thermostat if the batteries are dying or there is faulty wiring.

Power outage or any interruptions in the power cause the thermostat to automatically switch to the setup mode. Installing a honeywell rth958wf thermostat. Honeywell thermostat says low battery with new batteries.

According to honeywell, if you are still getting a low battery message or the word lol appears on screen even after you. The blinking “cool on” message on a honeywell thermostat display indicates that the system is restarting, batteries need replacing in the control panel, or a fault with the. Firstly switch on the thermostat.

Remove the thermostat from the wall mount. The reason the light is flashing is that the power outage has switched the thermostat back to setup mode. You might think that this is a weird process but this works!