Carrier P251-0083H Head Pressure/Low Ambient Control

The Carrier P251-0083H is a head pressure and low ambient control used on HVAC and refrigeration equipment to regulate condenser operation under varying outdoor temperature conditions. It helps maintain proper head pressure when ambient temperatures drop, protecting the compressor from operating outside its design limits. This is a genuine Carrier replacement part. Confirm this part number against your equipment's parts list before ordering.