Hartland Controls CON-AUX300-1 AUX Switch Freon This is a dedicated 3-ton

This is a dedicated 3-ton TXV

you know that maintaining communication between sensors

ensuring optimal signal integrity and low resistance

these units are typically tested for higher proof pressures

How do I troubleshoot a zone not heating

Hartland Controls CON-AUX300-1 AUX Switch Freon This is a dedicated 3-tonThe Hartland Controls CON AUX300 1 is a high performance SPDT auxiliary switch engineered specifically for seamless integration with three phase contactors. Designed for heavy duty HVAC R applications, this contactor auxiliary contact provides critical status feedback and control interlocking for industrial and commercial systems. It features a single pole double throw (SPDT) configuration, allowing for flexible wiring of both normally open (NO) and