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Designed for on/off control
Includes both defrost relay and defrost thermostat for complete control
Ensure the mounting bracket is properly grounded to the furnace chassis to allow the microamp signal to reach the control board
A veteran tech will check for igniter resistance using a multimeter
The unit is designed for use with McDonnell & Miller G-series or R-series stainless steel probe rods
White-Rodgers 11B18-101 Control R-410A Designed for on/off controlThe White Rodgers 11B18 101 is a professional grade well immersion control designed for precise hydronic temperature regulation in residential and commercial boiler systems. This SPST immersion control is specifically engineered to open on rise, making it a reliable high limit safety control or operating control for high temperature applications. It features a flexible operating range of 100F to 240F (38C to 116C) and an adjustable differential from