Check for issues with the indoor ac filter.

Honeywell thermostat heat on flashing. Crank thermostat down to the lowest temperature. Someone tried to restart the compressor before the refrigerant had time to settle. The reason the light is flashing is that the power outage has switched the thermostat back to setup mode.

1.with a heat pump installation process, blinks are replaced with “flashing.”. If the thermostat is installed in this. The first step is to determine if your system is cooling at all and if it can control it.

Thermostat blinks cool on or heat on is a safet. All you need to do is change the batteries in the thermostat. Then it will turn solid and turn on the heat.

If your thermostat is blinking “cool on” one of three things has taken place. Honeywell thermostat says cool on blinking or heat on flashing, but not working after changing batteries. Power outage or any interruptions in the power cause the thermostat to automatically switch to the setup mode.

Why is the cool on, heat on, snowflake, or flame blinking on the thermostat display? Honeywell thermostat blinking heat on. It is acknowledging you are calling for heat by blinking and protecting equipment.

I have a honeywell thermostat, model th3110b. Your honeywell thermostat can also display “cool on” if your ac. A thermostat is a type of electronic device that controls the heating or cooling systems in a building.