I have a honeywell a/c in my house. The control panel has a check red light that is on.
The panel, is where I set the temperature, etc.
Sorry, I cannot post any more details because I do not even know where to look. The filter is in the attic, and the unit is outside the house.
Any ideas what it is, or what I need to check,
Thank you,
./antunin/.

It is probably just a filter change reminder. Is the unit still operating like it is supposed to?

Hi Joshdta, yes, the unit works fine. So I will get the filter specs (from the one that is in the unit now) and will replace.
THANK YOU VERY MUCH, Joshdta.
Appreciate your time and knowledge.
./antunin/.

Thank you Joshdta, I did replace the filter and the light is no more.
Thank you again, you save me $100 box .
./antunin/.