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Ships within 48 hours · Estimated delivery Oct 7 - Oct 12
42-42139-11
ensuring seamless integration into existing commercial control systems where close-off pressures up to 200 psid are required
Proper installation of this OEM Lennox furnace part is essential for maintaining strict safety standards and preventing heat exchanger damage
High-Output Performance: Delivers a consistent 500mV to 750mV range to ensure the main burner ignites efficiently upon a call for heat
For optimal performance and to prevent premature wear
Trane SWT4230 Limit Switch 318172-701 42-42139-11The Trane SWT4230 Limit Switch is a genuine OEM replacement part engineered for high temperature circuit protection in residential and commercial heating systems. Classified as an L215F limit switch, this SPST (Single Pole Single Throw) thermal cut off is designed to open an electrical circuit when the sensor detects a temperature rise reaching 215F. This precise interruption prevents heat exchanger damage and ensures safe operation within the supply
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