Trane KIT9660 Conversion Kit Els PW 17895 Bypassing a safety limit switch

Bypassing a safety limit switch is strictly against safety protocols

Verified Interchangeability: Fully interchangeable with model H19AA-4C

making it suitable for both high and low-pressure fluid loops

Designed specifically for low-pressure requirements

This surface-mount control ensures the system remains locked out following a high-temperature excursion

Trane KIT9660 Conversion Kit Els PW 17895 Bypassing a safety limit switchThe Trane KIT9660 Conversion Kit is a critical OEM replacement engineered to modernize flame detection in legacy forced air systems. As the direct replacement for CNT1643, this radiant to flame sense conversion kit transitions aging furnace architectures from obsolete radiant sensing to contemporary flame ionization technology. This upgrade is foundational for technicians looking to resolve intermittent ignition failures and improve flame detection