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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
When the pre-heater or combustion air reaches the 155°F threshold
preventing hazardous operation in the event of a venting obstruction or mechanical failure
The internal normally closed (NC) contacts are calibrated for a precise pick-up voltage range of 323-352V and a drop-out voltage of 75-135V
which can crack the heat exchanger
Precision Fit: Reduces installation time and the risk of mechanical failure associated with non-standard gaskets
Trane SWT1271 Limit Switch When the pre-heater or combustionThe 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
US$ 208.25
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