Rheem-Ruud 47-23610-21 Limit Switch 321142-301 It retains the same 1/2"

It retains the same 1/2" footprint and 24V electrical requirements

Does this require special tools for alignment

or "No Flame" error codes on the boiler control board

Electrolysis Reduction: Uses low AC voltage on the probe circuit to prevent electrode plating and degradation

Rheem-Ruud 47-23610-21 Limit Switch 321142-301 It retains the same 1/2"The Rheem Ruud 47 23610 21 Limit Switch is a critical safety component designed for high limit temperature protection in residential and commercial HVAC systems. As an OEM replacement part, this SPST normally closed switch is engineered to break the electrical circuit when the high limit temperature is reached, preventing heat exchanger damage. This air pressure and thermal safety control features a fixed open temperature of 175F and a fixed close