Hi, I have an brayant 2 stage heat pump (about 10-12 years old) and it runs for about 5 minutes, then turns off for about 10 minutes. While its running I see that the main PC board LCD light flashes twice (constant) then after about 5 minutes it turns off. After it turns off the same light just keeps flashing about 1 flash per second. In the past 3-4 years just about everything has been replaced. I live in Arizona and it's still warm so the ac is a very important part of life. So if anyone has any idea's I'd love to hear about it. I'm not to happy about replacing the entire unit because in the past 3-4 years I should pretty much have a new ac system.