Sorry to have to tell you, but the computer needs scanned. The blinking light indicates a fault in the HVAC system. You need to have an actuator DTC detection test completed that requires a scan tool which can read HVAC codes. Although most parts stores will scan for free, they don't have the ability to check these types of codes.
I wish I had a better answer, but there are multiple things that can be causing this to happen.
Let me know if you have other questions.
Sunday, June 14th, 2020 AT 10:25 PM