Optimized Performance: Maintains the internal relief valve (IRV) setting accuracy and overall regulator stability

Manual Reset Security: Features a manual reset (M/R) button

the VT3223 is designed for hot and chilled water or glycol mixtures

the sensor is likely defective

reducing callbacks caused by stuck or welded contacts

York S1-026-34028-005 Limit Switch Els PW 17895 Optimized Performance: Maintains the internalThe York S1 026 34028 005 Limit Switch is a mission critical OEM replacement furnace part designed for high limit protection in gas furnaces and air handling units. This automatic reset limit switch operates with a 180F opening temperature and a 150F closing temperature, ensuring the heat exchanger does not exceed safe operating parameters. As the direct replacement for S1 2702 338P A, this 150 180F AUTO limit control maintains precise thermal