Whether you are troubleshooting a short-cycling furnace or a blower fan that refuses to shut off

Precise Hub Alignment: Features an intake-side hub for specific motor configurations where the 1/4" bore must seat securely against the shaft

preventing common issues like hunting or failure to reach full stroke under system pressure

If it reads open (OL) when cool

the FS-BO-178 is engineered to withstand the demanding environments of industrial air handling

Supco BC7070 Blower Control Els PW 17895 Whether you are troubleshooting aThe Supco BC7070 Blower Control is a versatile 24V time delay relay engineered for universal compatibility in residential and light commercial HVACR equipment. This non integrated furnace blower control board features an adjustable timing circuit that manages the fan on off delay between 0 and 4 minutes (0 240 seconds). By allowing the heat exchanger to reach optimal temperatures before the blower engages and purging residual heat after the cycle