Install was easy, but it is not functioning correctly. With no buttons pushed, the fan runs at extreme low speed. I can turn it off only by pushing the boost button, Lights do not work. Pushing button/ speed 1 produces a higher speed, but button 2 slows down fan and button 3 slows the fan down even more. Broan tech support sent me a new control board, but that did not solve problem (same symptoms). I do not have a wiring diagram, so I do not know if the wire harness is misswired. Maybe a transformer is bad. Suggestions?
Hello,
The Problem is the wiring. Take the 2 screws retaining the metal plaque off underneath the filters. You will see the wires leaving the motor going into a "molex" plastic connector which connects two another set of wires going to the control board. Check to see if the wiring colors match from side to side of plastic connector. Ive only seen it happen once but it was exactly that. I do service calls for broan & Nutone
Jean-Marc
Posted on May 14, 2008
Hi there,
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Posted on Jan 02, 2017
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