A failed ignitor often triggers a "3-trial" lockout

an "open" reading typically indicates a broken internal element

this unit offers the simplified interface end-users expect with the durability professional installations demand

For vertical installations

the TKO refrigeration oil test offers immediate visual confirmation: a purple result indicates safe oil

Lochinvar & A.O. Smith 100167445 Valve A failed ignitor often triggersThis genuine Lochinvar and A. O. Smith 100167445 Air Vent Valve is a critical component for maintaining hydraulic stability in high efficiency heating systems. As a direct replacement for the RLV30000 and RLV2023, this valve is engineered to eliminate entrained air from the heat exchanger, preventing oxygen related corrosion and ensuring consistent heat transfer. It is specifically designed for integration with Lochinvar Knight XL KBN399 800 and FTXL