On saturday, I get sent to a service call. When I get there I find a central air unit that uses Amonia (R-717).
I talked to the house owner. I asked her what's the problem. She said that whenver she turns the A/C on, the air will come out cool at first, but then it would stop and the air would be warmer.
So I opened the system and check everything, and everything was fine. I started the machine and it started to work. I left and everything worked just fine. Now I get a call from her. She says the A/C doesn't work again. I asked her for how long had the A/C been running and she said that for one hour.
What could be the problem?? Do I need to get more information?? What's the info.??
I'll be glad if anyone would help me with this matter.