Description
The Trane SWT3968 is an OEM-quality manual reset (M/R) rollout switch engineered to protect furnaces and heating systems from the hazards of flame rollout. When burner flames escape the combustion chamber and roll out beyond safe boundaries — due to a cracked heat exchanger, blocked flue, or restricted airflow — this switch detects the abnormal heat rise and immediately interrupts the ignition or gas valve circuit, shutting down the system before damage or injury can occur.
With a trip point of 190°F (L190F), the SWT3968 is calibrated for precise, reliable response. As a manual reset device, it requires a technician to physically reset the switch after a trip event, ensuring the root cause is identified and corrected before the system is returned to service — a critical safety feature for residential and light commercial heating applications.
Key Features
- OEM Trane replacement rollout switch (SKU: SWT3968)
- 190°F (L190F) trip temperature for accurate flame rollout detection
- Manual reset (M/R) design requires technician intervention before restart
- Interrupts ignition or gas valve circuit upon activation
- Protects against heat exchanger failure, flue blockage, and restricted airflow conditions
- Direct OEM replacement for compatible Trane and American Standard furnace models
Application
The SWT3968 is a direct OEM replacement rollout switch for select Trane and American Standard furnaces. Always verify compatibility with your specific furnace model number before installation. Installation should be performed by a qualified HVAC technician in accordance with local codes and the equipment manufacturer’s service instructions.
Reviews
There are no reviews yet.