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or tripped high-limit switches
the probe incorporates a proprietary hydrophobic and oleophobic ePTFE filter
The 1 1/2" NPT connection and high-flow capacity make it a staple for industrial boilers and large-scale furnace installations
If you see melted plastic or heavy oxidation on the silver points
Common Questions Is the 100166434 compatible with my older Lochinvar unit
Carrier ZONEBB3ZAC01 Control 322838-754 or tripped high-limit switchesThe Carrier ZONEBB3ZAC01 3 Zone Control System is a professional grade solution designed for precise climate management in residential or light commercial applications. Engineered for multi zone HVAC control, this board supports up to 3 zone 2H 2C systems, offering seamless integration with standard 24V heat pumps, air conditioners, and furnace configurations. This backplate mounted controller utilizes duct temperature sensors to manage air balancing