Common indicators include intermittent furnace cycling

the S1-029-21182-042 threads securely into the gas manifold

As a veteran technician knows

Optimized Combustion: Proper orifice sizing prevents excessive gas waste and soot buildup

Trane HUS1207 Plastic Plug Common indicators include intermittent furnaceThe Trane HUS1207 is a precision engineered 6 pin plastic plug designed for critical electrical terminations within Trane HVAC systems. Built for the rigors of field service, this genuine OEM replacement part ensures reliable electrical connections between wiring harnesses, control modules, and sensors. Its heavy duty plastic construction provides high impact resistance and dielectric insulation, maintaining circuit integrity in demanding residential