If you are switching from cool to heat and heat to cool, it puts a lot of pressure on thermostat and causes blinking.

Cool on flashing. In case you’re simultaneously facing the honeywell thermostat, flashing cool on but not working, you may need to troubleshoot the device and fix the issue. Usually, the “cool on” message on your digital thermostats should be stable. A power outage or some other interruption associated with a power source can trigger the.

Honeywell thermostat flashing cool on. When a honeywell thermostat is in setup mode it normally. Ac ran fine for about 10 minutes, and then turned back off, cool on flashing again.

However, if you notice your honeywell thermostat blinking cool on for long periods of time and you don’t feel any cool air, there could be an issue on your hands. Overviews 1.2 how to troubleshoot the flashing “cool on” 1.2.1 step 1: But when it flashes, it.

The reason the light is flashing is that the power outage has switched the thermostat back to setup mode. Set thermostat to off, waited 10 minutes, turned back on. If the cool on or the snowflake icon is flashing, the thermostat is in delay mode, which can take up to 5 minutes.

This delay is to protect your equipment from short cycling. Set the thermostat setting to the lowest. When the cool light on your honeywell thermostat keeps flashing, it may mean that the batteries are running low.

Your thermostat could go into setup mode if you had a recent power outage or no power for a while. Leave the unit for a while and check whether the system is going to start cooling or not. Honeywell thermostat blinking “cool on”?(here’s why!) possible causes.