Clogged or damaged orifices can cause uneven heating or burner failure

Technical Reliability: Features Class B insulation and a quiet

Rugged Build: Features a high-speed 3200 RPM motor with ball bearings designed for the high-heat environment of combustion venting

Broad Compatibility: Directly replaces various legacy and superseded Trane part numbers for easier stock management

Laars Heating Systems R2005700 Ignition Control 320788-703 Clogged or damaged orifices canThe Laars Heating Systems R2005700 Ignition Control is a critical OEM replacement part designed for non CSD 1 compliant hydronic boilers and volume water heaters. Built for professional grade reliability, this electronic ignition module manages the complete fireplace sequence, including pre purge timings, trial for ignition, and constant flame monitoring via microamp sensing. It is engineered to interface directly with 24VAC transformers, blower