Carrier HK680016 Pressure Switch 321894-706 and early 53/55 series residential

and early 53/55 series residential heaters

This 24V damper actuator delivers 175 lb-in (20 Nm) of torque

By replacing the legacy ignition replacement kit with this current OEM standard

Can I clean the 52M72 flame sensor instead of replacing it

38" water column set point

Carrier HK680016 Pressure Switch 321894-706 and early 53/55 series residentialThe Carrier HK680016 High Pressure Switch is a critical safety component designed for precise refrigerant pressure monitoring in residential and commercial HVAC units. As the direct replacement for HK02AA359, this electronic switch prevents compressor damage by interrupting the control circuit when discharge pressures exceed safe operating limits. Maintaining a cut out range of 90 to 450 PSI, it ensures your system remains within the manufacturer's