What are the symptoms of a system with high suction pressure, high head pressure, low superheat, and low/normal sub-cool?
1) The system is overcharged with refrigerant
2) The system has a restriction in the refrigerant flow
3) The system has a faulty expansion valve
4) The system has a faulty compressor
5) The system has a faulty condenser fan
6) The system has a faulty evaporator fan