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such as a clogged HVAC filter
As a precision-calibrated furnace safety limit
The S1-025-31813-000 ensures that if the system experiences restricted airflow—often due to a clogged filter or a failing secondary heat exchanger—the circuit breaks before the unit sustains damage
preventing fuel release in the event of pilot outage
and 210E series
Nordyne 626404R Limit Switch such as a clogged HVACThe Nordyne 626404R is a critical OEM replacement part engineered for high limit safety in Intertherm, Miller, and Revolv gas and electric furnaces. As a 145F double pole limit switch, this component is designed to monitor internal plenum temperatures and interrupt both sides of the electrical circuit should the system exceed the 145 degree Fahrenheit threshold. This rollout limit switch features an automatic reset with a 40 degree differential,
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