Noticing that there was a blinking light on my thermostat

When I was a little kid I could sleep for hours on end. I had no issues going to bed and falling asleep right away. Now that I’m much older it takes me a very long time to fall asleep. Normally what I’ll do is if I can’t sleep i’ll go and get a drink of water or turn the TV on because for some reason the TV does help me fall asleep. The other night I woke up and went into my kitchen. When I went into the kitchen I saw my thermostat blinking. My thermostat is located right on the wall near my kitchen and living room. The light was very bright and it was odd to me that the small light was flashing red. It kind of was intimidating because any type of flashing red light means something is serious. I had no idea what the flashing light meant so I went to find the thermostat manual. What I read in the manual was that the flashing light was indicating to me that the outdoor unit was locked out. This means that the outdoor unit is completely shut off due to an issue. Because of the issue that was going on with the outdoor unit, it sent a signal to the thermostat letting me know that there was a problem. I thought this to be a very advanced piece of technology and I had no idea my thermostat could do that. It was 3 a.m. in the morning and unfortunately my heating and cooling company was not open to take any service calls. I finally fell asleep and when I woke up I scheduled an appointment with my HVAC technician to take a look at the locked out outdoor unit.
Portable space heater