Lennox 47K15 Solenoid Coil 318973-401 this switch is specifically calibrated

this switch is specifically calibrated for high altitudes

Versatile Compatibility: Tested and validated for use with air

Universal Voltage Compatibility: The 120/240 Vac electrical rating facilitates installation across different power configurations without extra transformers

What is the difference between the 40003916-024 and the 40003916-024/U

Lennox 47K15 Solenoid Coil 318973-401 this switch is specifically calibratedThe Lennox 47K15 is a performance grade 24V solenoid coil engineered specifically for technical compatibility with Lennox 10CHP and 12CHP series heat pumps and condensing units. This electromagnet acts as the primary control mechanism for refrigerant flow, utilizing a low voltage electrical current to actuate the internal plunger. When the thermostat signals for a stage change or defrost cycle, the 47K15 solenoid valve coil generates the necessary