Lochinvar & A.O. Smith 100167835 Control 320734-701 Always verify the relief valve

Always verify the relief valve flange size before installation

Which actuators are compatible with the UGLK1000

Designed as a direct drop-in for Goodman furnace ignitor assemblies

A faulty switch often triggers a "Low Gas Pressure" lockout on the control module or prevents the inducer/blower sequence from advancing to ignition

Its compact footprint and NEMA 2 (IP54) housing make it ideal for light commercial applications where space is limited and long-term positioning accuracy is required

Lochinvar & A.O. Smith 100167835 Control 320734-701 Always verify the relief valveThe 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