I wake up at 7:00am to the sound of a loud fire alarm. It must be national test-your-fire-alarm-day. I remember those from middle school. I try to go to sleep, but it's no use.
I flop out of bed, head to the kitchen and make some breakfast. After breakfast I go back into my room and I hear a wheezing noise. After a bit of investigation I realize that it's the intake for the air conditioner that's making the racket. I flip the air conditioner on and off - the only repair move I can think of. It doesn't work.
When I get back to work it's 85 degrees in the apartment according to the thermostat. It feels hotter - I'm used to a breezy 73. After a day or two I realize that it's not going to fix itself and I call the repair man. It takes him a few days to fix it.