this limit control switch is typically utilized in the 24V safety string but is rated for standard pilot duty applications found in York gas furnaces and package units

the 117U4126 start relay has likely failed to energize the start capacitor/winding

Constructed with a seamless aluminum housing

drop-in replacement for legacy part numbers 626469 and 626469R

If the sensor detects a signal below the common 0

Johnson Controls T-4000-3141 Plastic Cover this limit control switch isThe Johnson Controls T 4000 3141 is a commercial grade pneumatic thermostat cover designed for horizontal mounting configurations within HVAC control systems. Engineered for T 4000 series thermostats, this white plastic enclosure features a single setpoint window to allow for clear visibility of calibration without compromising the protection of the internal bimetal sensing elements. The unit is designed with a clean, low profile aesthetic featuring