Armstrong Furnace R43203-002 HSI Ignitor meeting factory specifications for current

meeting factory specifications for current transfer

Broad Compatibility: Functions as a drop-in universal thermocouple replacement for various BASO and OEM standing pilot applications

Disconnect the sensor from the control board and measure resistance with a multimeter

This A2L-compliant component utilizes Class B insulation and is UL/CSA listed

including the "Blue" series and Sensi models

Armstrong Furnace R43203-002 HSI Ignitor meeting factory specifications for currentThe Armstrong Furnace R43203 002 HSI Ignitor is a critical OEM replacement component engineered for precision ignition in Armstrong Air and Lennox family gas furnaces. As a high performance hot surface ignitor (HSI), this part is designed to reach the specific ohm range and temperature necessary to ensure consistent pilot free furnace ignition without tripping flame sensors or causing delayed ignition sequences. This genuine Armstrong replacement part