its a 30GXN325-A-6-CY spun up July 2003 in a 40K sf office building. Since then I have had to replace 2 screw compressor boards. The most recent burnout is attached. Does anyone else have history with this type of equipment killing its boards in this manner?
I have other problems with it (motor masters, fan motors, fuses, liquid level sensors, etc.) but generally nothing takes the entire system down except this. Its Texas and not a good thing when AC is down. The last time the board burned up and was down for six days until replacement parts made it. The good thing was it in December. This time its too close to summer to survive on ambient air temperatures.