Why does the label say 3000 RPM while some specs say 3300 RPM

audible humming from the 277V coil

5 to 3 tons depending on the total system efficiency and evaporator coil match

Use a multimeter to perform an ohm check at the back of the controller pins

Carrier EA36UZ097 Expansion Valve 322057-301 Why does the label sayThe Carrier EA36UZ097 Expansion Valve is a critical OEM thermostatic expansion valve designed for high precision refrigerant metering in professional HVAC recovery and cooling systems. Engineered specifically for R 410A refrigerant applications, this TXV valve maintains the ideal superheat balance across the evaporator coil, preventing liquid slugging and ensuring compressor longevity. As a genuine Carrier replacement part, the EA36UZ097 features a