York S1-3500-3121 Limit Switch 340155-7026 the design allows for the

the design allows for the actuator to be swapped or upgraded without removing the valve body from the line

Durable Construction: Features a rugged blower housing and a thermally protected 120V inducer motor designed for continuous duty during peak heating cycles

compact footprint suitable for tight cabinet installations where accurate process control is non-negotiable

The coating acts as an insulator to prevent "false" conductive paths

this 24V AC time delay relay is engineered to prevent short-cycling and coordinate staged cooling demands

York S1-3500-3121 Limit Switch 340155-7026 the design allows for theWhen 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