Bypassing a safety limit switch is strictly against safety protocols
the internal relay or circuitry has likely failed
Tool-Free Installation: Redesigned mounting procedure allows for fast
Wide Model Support: Verified for use in high-capacity Modine unit heaters
This board is widely used in Raypak Fast Response series heaters and boilers
Lochinvar & A.O. Smith 100187881 Ignitor Assembly 326058-757 Bypassing a safety limit switchThe Lochinvar & A. O. Smith 100187881 Ignitor Assembly is a critical OEM replacement part engineered for high efficiency commercial gas water heaters, specifically the BTH, SUF, and HCG series. As a veteran grade spark ignitor assembly, this component ensures precise ignition timing in 300, 400, and 500 MBH models, as well as 200 201 series units. When troubleshooting water heater ignition failure, the 100187881 is the primary solution for restoring