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making it a critical component for VAV reheat coils
it integrates seamlessly into existing wiring harnesses on compatible American Standard and Trane furnaces
The board uses amber and red LED signals to communicate specific faults such as reversed polarity
steam safety valves are factory set and sealed to comply with National Board requirements
Carrier HK02ZB309 Pressure Switch 320788-702 making it a critical componentThe Carrier HK02ZB309 Pressure Switch is a critical OEM replacement part designed for high pressure monitoring in Carrier, Bryant, and Payne HVAC systems. This vapor pressure switch features precise factory set trip points, with an open pressure of 384 PSI and a close pressure of 309 PSI. Engineered for Puron (R 410A) units, it maintains system integrity by preventing hazardous overpressure events and ensuring the compressor operates within safe
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