When you're out in the field servicing a 5-ton system

reducing external wiring runs

and is not designed for traditional standing pilot applications

This is an ICP (International Comfort Products) part

Note that this snap-action switch is not interchangeable with older Series 42 mercury switches or Series 150S assemblies

Carrier 30226254 Control Board R-407C When you're out in theThe Carrier 30226254 Control Board is a critical genuine OEM replacement specifically engineered for service technicians managing Carrier HVAC systems. This main control board provides direct digital control over heating, cooling, and fan sequences, ensuring the 38GVM542 301 heat pump or air conditioner operates within its factory specified parameters. As a Carrier circuit board, it manages voltage distribution to the compressor and blower motor,