Lennox 65W90 Temp Switch 319848-301 System Longevity: Prevents debris buildup

System Longevity: Prevents debris buildup in valves and actuators

Failure of this switch often results in a "no-fire" condition or blower prover circuit error codes common in Lochinvar Knight and A

The terminal designations match factory harnesses

The Resideo R8222B1067 Relay is a heavy-duty SPDT general purpose switching relay designed for reliable control in HVACR and industrial applications

15" WC setpoint

Lennox 65W90 Temp Switch 319848-301 System Longevity: Prevents debris buildupIf you are seeing excessive ice buildup on the outdoor coil or the heat pump is failing to initiate its defrost cycle during low ambient conditions, it is likely time to replace the Lennox 65W90 Defrost Temperature Switch. As an OEM Lennox 102298 01 replacement, this defrost sensor is engineered specifically for Lennox heat pump and AC units to monitor the refrigerant temperature at the distributor or liquid line. When the coil temperature drops below