Lochinvar & A.O. Smith 100112746 Display Board L99H008 By utilizing an elliptical float

By utilizing an elliptical float and high-leverage ratio

including the MA40-7041-501

double throw (SPDT) configuration

a "hump" or vibrating sound during startup

Field technicians rely on this specific 3PDT 24V relay for troubleshooting electrical failure in residential and light commercial air handlers where reliable switching and coil resistance are paramount for maintaining HVAC system reliability

Lochinvar & A.O. Smith 100112746 Display Board L99H008 By utilizing an elliptical floatAs a field tested technician, you know that a compromised user interface on a commercial water heater effectively sidelines the entire system. The Lochinvar & A. O. Smith 100112746 Display Board serves as the primary User Interface Module for high efficiency systems, including the Cyclone BTH 120 through BTH 250 series. This genuine OEM replacement part (also identified by MPN 9008460005) is engineered to restore full system diagnostics and parameter