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The York S1-3110-3301 is a heavy-duty 24V DPST 6 terminal fan relay engineered for precise blower motor sequencing in residential furnace and air handler applications
Common indicators include the furnace blower running continuously without heat
replacing part numbers 35F19 and 35F1901
or excessive load exceeding the 40VA rating
preventing hazardous operation in the event of flue blockages or inducer assembly failure
Lennox 98P78 Hot Surface Ignitor Els PW 17895 The York S1-3110-3301 is aThe Lennox 98P78 Hot Surface Ignitor is a critical OEM replacement component designed to ensure consistent glow ignition in residential gas furnaces. Also identified by the part number 98P7801, this 120V silicon carbide igniter is engineered for high temperature durability and rapid thermal response. As a ceramic block style Type B ignitor, it serves as a direct drop in for various Lennox HVAC systems, as well as specific compatible units from Rheem
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