By preventing damage from prolonged over-current scenarios

it is designed to pair with non-spring return and spring return actuators

the 440-540-000 includes the burner tube and the attached pilot bracket

maintaining exact factory specifications to ensure seamless HVAC part compatibility for field technicians and contractors

Field Efficient: Includes all critical internals required for liquid propane to natural gas conversion

Lochinvar & A.O. Smith 100170488 Lower Sensor 30067439-890 By preventing damage from prolongedThe Lochinvar & A. O. Smith 100170488 Lower Sensor is a critical thermistor based component engineered for precise thermal monitoring in high efficiency water heating systems. As an exact replacement for the TST1188 sensor, this part ensures the control board receives accurate resistance feedback from the lower portion of the tank. For technicians troubleshooting Lochinvar water heater error codes or A. O. Smith temperature sensor faults, installing