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The 150F rating is specified to protect your exact model's internal components
System Restoral: Effectively resolves "stuck in cooling" or "stuck in heating" symptoms when the mechanical valve is still functional but the solenoid coil has opened
utilizing OEM Armstrong parts like the A21959-1 ensures HVAC repair reliability and long-term system performance without the risks associated with generic sealing components
Can this be used for averaging signals
maintaining safe and efficient burner operation during the ignition sequence
Trane THT2435 Limit Switch The 150F rating is specifiedThe Trane THT2435 is a critical OEM replacement thermal safety component engineered for precision temperature monitoring in high performance furnaces and air handlers. Designed with a 7 inch insertion length, this automatic reset limit switch ensures superior coverage within the heat exchanger airflow. It is calibrated to professional standards, featuring a fixed setpoint that opens at 150F to interrupt the electrical circuit during over temperature