SKU: 49608488124
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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
or 142 lb-in models
Proper installation of this genuine York replacement part is essential for maintaining airflow integrity and preventing premature ignition failure or heat exchanger damage
offering technicians a reliable point of isolation that resists vibration and thermal cycling
such as the 12A09 or 12A39
mixed gases
Trane SWT1271 Limit Switch or 142 lb-in modelsThe Trane SWT1271 is a critical furnace high limit switch designed for HVAC system diagnostics and thermal protection. As a standard OEM replacement part, this auto reset limit switch prevents the heat exchanger from reaching a hazardous open temperature of 180F, cutting off power to the gas valve until the unit cools to its 150F reset point. For technicians troubleshooting furnace short cycling or 4 flash error codes on a Trane or American Standard
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