White Rodgers 1E78-140 Thermostat If the 50418 limit switch

If the 50418 limit switch is tripping

A standard 4mm Allen wrench is needed to remove and secure the cartridge within the Sporlan Q valve body

This set typically includes the standard metallic finish (Silver/Gold) used by Intermatic to differentiate ON and OFF functions on the dial

This Marley thermostat is verified for use with QMark and Berko models DH1521D

The Lennox 25J30 is a heavy-duty

White Rodgers 1E78-140 Thermostat If the 50418 limit switchThe White Rodgers 1E78 140 Thermostat provides a rugged, field proven solution for single stage heat only systems. Operating on 24V low voltage or millivolt systems, this vertical non programmable unit is the preferred choice for technicians replacing older mechanical mercury thermostats in residential or light commercial applications. Its digital LCD backlit display offers high contrast visibility, ensuring accurate temperature readings within a 1