Blue Bird bus front winshield heat/defrost switch on, not working, no blowing

Comfort System
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Blue Bird bus front heat switch on, not working, no blowing

  1. Check the fuse. Good

  2. Check the power to the switch. Good.

  3. Swap the switch. Switch is good. Suspect the resistor is not working.

  4. Remove the cover of drive side blower. On the left side the driver seat.

    IMG_3770
    IMG_37701512×2016 390 KB

  5. Test the continuity of the resistor. Break in side.

  6. Replace with new one. Part no. 10024862

    IMG_3780
    IMG_37801512×2016 332 KB

    IMG_3776
    IMG_37761512×2016 361 KB

  7. Test good.

  8. Reinstall the cover.

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