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Armstrong Furnace R42640 001 Ignitor Sensor 30067439 890 Low Cracking Pressure: Standard 0 Low Cracking Pressure: Standard 0 and Miller systems to resolve issues where the AC compressor won't start or the outdoor fan sustains low RPMs This is an ignitor sensor less pilot design The Armstrong Furnace R42640 001 Ignitor Sensor is a critical OEM replacement part designed for precise ignition and flame rectification in residential HVAC systems
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