the Carrier KH74HG140 is the standard for maintaining original equipment performance in Carrier and Bryant residential units

Features a high-grade semiconductor material for stable resistance readings and rapid response to temperature fluctuations

Compatible with high-capacity Ovenpak 400 series EB6 and EB7 burner architectures

It utilizes a 1/2-inch NPT inlet and outlet

Can I interconnect multiple units for a single fan shutdown

Lochinvar & A.O. Smith 100167835 Control 340155-7024 the Carrier KH74HG140 is theThe Lochinvar & A. O. Smith 100167835 Control is a critical integrated control board engineered specifically for the Knight WH199 wall mount boiler series. Designed for peak hydronic heating performance, it serves as the central intelligence for your appliance, managing the firing rate, combustion fan speed, and multi zone pump logic. This OEM replacement part replaces previous iterations with improved firmware to handle sophisticated modulating