Enhanced Ignition: Delivers a concentrated arc to the burner electrodes for reliable cold-starts and reduced soot buildup

Built for low-pressure gas applications

the 19 Series is also National Board capacity certified for air and non-hazardous gas service under Section VIII

you must match the 1HP rating and the specific Trane part number to ensure the internal programming matches your cabinet's CFM requirements

the internal bimetal disc has likely failed and requires replacement

Heil Quaker ICP 34335004 Limit Switch 321702-401 Enhanced Ignition: Delivers a concentratedUpgrade your system reliability with the Heil Quaker ICP 34335004 Limit Switch, a precise OEM replacement engineered for high performance thermal regulation. Designed specifically for Heil, Quaker, and International Comfort Products (ICP) furnace units, this automatic reset limit switch is a critical safety component that monitors heat exchanger temperatures to prevent thermal overload. When the internal plenum temperature reaches its 110? F set