My EC light is on and the AC compressor won't engage. I checked the pressure in the system and it was a bit low, I evacuated about 16oz and reinstalled 34oz, the compressor still won't engage, andthere are no visible leaks. I read another post that suggested the high pressure switch could be the issue. Does anyone know how to diagnose the switch? Also, I ran through the diagnostics on the control panel, can anyone help me decifer these numbers?

Thanks in advance for your help.