As a two-pole (DPST) high limit with SPDT thermostat contacts

Is the R9110-412 interchangeable between RV91 and 210E

The Aaon P51900 follows the standard 8-pin blade layout

ensuring drop-in replacement without modifications

Lennox 84L00 Limit Switch As a two-pole (DPST) highThe Lennox 84L00 Limit Switch is a critical OEM replacement part designed for high precision thermal monitoring in residential and commercial furnaces. Engineered as a 130 160F AUTO limit switch, this SPST (Single Pole Single Throw) control features a 3 inch stilt insertion to provide accurate sensing within the heat exchanger airflow. This component is identical to part number 84L0001 and serves as a direct Lennox furnace high limit replacement,