Armstrong R40403-003 blower control
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keithspecialty.com helped me find a compatible blower control board for my old Armstrong central air system. Fast response. Part showed up in a day. Well packaged. I'm very happy I didn't have to struggle through the heatwave with my little backup window units.
Original Control Board failed after 25 years. Replacement 40403-003 has wiring in the same positions and terminals clearly marked. A 20 minute swap. Board works perfectly!
Works great. Even better than the original when it was new. This replaces the old model -001, fits perfectly and runs like a charm. this one delays the start of the blower until the coil is chilled. My other one came on with the compressor and blew hot air for a while. I'll bet I save good money with this one!
Fast processing and shipping. Charges very reasonable. Exactly as ordered, no problems, everything went very smoothly. the piece fit exactly and was a snap to install.