F5C Fuel System - High Pressure Pump Is Pumping More Fuel Than Expected. Check Metering Unit Circuit, Low Pressure Fuel Tubes (Return From Pump To Tank Clogged), Fuel Pressure Sensor, Or If Injectors Are Leaking. Red
Fuel Flow Set point Too Low
Hissing noise at expansion valve, Loss of refrigerant.Restriction in refrigerant system.Check receiver-dryer for uniformity of temperature.