Description
Trane SWT3987 — 180°F Manual Reset Rollout Switch
The Trane SWT3987 is a 180°F manual reset (M/R) rollout switch engineered to protect Trane furnaces from dangerous flame rollout conditions. When burner flames roll out beyond the combustion chamber — due to a blocked heat exchanger, restricted flue, or insufficient combustion air — this switch detects the abnormal heat event and immediately interrupts the gas valve circuit, shutting down the burner to prevent equipment damage and potential fire hazards.
Unlike auto-reset limit switches, the manual reset design requires a technician to physically reset the switch after a trip event. This built-in safety feature ensures the root cause of the rollout is identified and corrected before the system is returned to service, making it an essential component for safe, code-compliant furnace operation.
Key Features
- Trip temperature: 180°F — provides precise, reliable flame rollout detection
- Manual reset (M/R) design — requires technician intervention after trip for added safety
- Direct OEM replacement for compatible Trane furnace models
- Interrupts burner operation upon detecting rollout, protecting the heat exchanger and surrounding components
- Durable construction built to Trane OEM specifications for long service life
Application
- Designed as a factory-specified replacement rollout switch for Trane gas furnaces
- Mounts in the burner compartment to monitor for flame rollout events
- Compatible with select Trane residential and light commercial furnace models — consult equipment documentation to confirm fitment
Why Choose OEM Trane Parts?
Using genuine Trane replacement components like the SWT3987 ensures proper fit, function, and compatibility with your equipment. OEM parts maintain the integrity of the original system design and support warranty compliance where applicable.
Reviews
There are no reviews yet.