When you see the “Cool on” light on your Honeywell thermostat blinks you perhaps don’t know whether it is “normal” or not.  Probably you are used to seeing it blinking from time to time but now it is flashing continuously. As this flashing is now going on for a few hours, or even a few days, you start to wonder when is a blinking “Cool on” light normal and when do you have to start troubleshooting.  And if you have to troubleshoot, where do you start looking for possible causes? And if you’ve found a fault, how do you fix it? When the “Cool on” light blinks on your Honeywell thermostat, it’s not necessarily a sign that there is something that needs fixing. When the light blinks only for a few minutes and then turns off or becomes a solid light, it means your air conditioning unit has started to…