York S1-3500-3121 Limit Switch 326010-701 Versatile Application: Standard 9-13 PSI

Versatile Application: Standard 9-13 PSI operating range integrates seamlessly with pneumatic thermostats and controllers

this valve facilitates reliable performance in medium-temperature applications

Smith Cyclone series risks CO leakage and inefficient fuel-to-air ratios

failure to hold setpoints

Versatile Spring Ranges: Configurable for various pneumatic control signals to match specific valve sequencing requirements

York S1-3500-3121 Limit Switch 326010-701 Versatile Application: Standard 9-13 PSIWhen you are troubleshooting a mid efficiency or high efficiency furnace that is short cycling or displaying a four flash diagnostic code, the York S1 3500 3121 Limit Switch is the OEM replacement part required to restore safe operation. This is a normally closed (NC) safety device calibrated for an opening temperature of 165F and a closing temperature of 105F. As a genuine Johnson Controls component, it is designed for drop in compatibility with