this HVAC compressor heater prevents refrigerant migration and dilution of the lubricant

By monitoring critical temperatures

By regulating flow based on water temperature

Fail-Safe Operation: Mechanical spring return ensures the valve stem moves to the up position upon pneumatic signal failure

allowing occupants to fine-tune comfort without complex programming

Copeland 971-0561-56 Compressor Overload 322838-752 this HVAC compressor heater preventsThe Copeland 971 0561 56 Compressor Overload is a critical safety component designed for HVACR refrigeration systems to protect against catastrophic motor failure. This genuine OEM Copeland part functions as a high precision sensor that monitors both electrical current draw and internal winding temperatures. In the event of a locked rotor condition, restricted refrigerant flow, or excessive ambient heat, the overloads bimetallic disc trips to open the