Designed with a standard 1/2" x 3/4" NPT connection profile

allowing for precise field adjustment within the

When energized by the reversing valve signal

overheating windings

Frequent failure is typically a symptom of an external short in the 24-volt circuit—often in the thermostat wiring or a failing contactor coil

York S1-373-23867-001 Defrost Module THPU32HP7Y Designed with a standard 1/2"The York S1 373 23867 001 Yorkguard 1 Stage Defrost Module is a critical OEM replacement component designed for 1 stage heat pump systems to prevent ice accumulation on the outdoor coil. Featuring the Yorkguard demand defrost logic, this module monitors thermodynamic conditions to initiate a defrost cycle only when necessary, rather than on a set timer, maximizing HVAC energy efficiency. As a veteran technician knows, maintaining the integrity of the