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Cooling fans not running

I have 16.2 volts output to the fans. Run the fans with a dc power supply and they work but won't run off the control board

Posted by Ron Blair on

  • Bart Falzarano
    Bart Falzarano Apr 15, 2014

    A couple things you can check: 1) make sure the wiring is not crossed. correct polarity to the fans. 2) check to make sure the 16.2 output voltage is DC and not AC. If one of the electrolytic capacitors failed you can AC voltage present and fans operate of DC voltage. 3) sometimes the connectors to the fan corrodes and not visible looking at the connector. This happens to the pins inside the plastic connector housing. Hope this info helps you. Best regards,



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