Where can I get the new replacement N678-C Nautilus Bathroom Fan part?

Possible wired neg to pos and pos to negative.

check the circut breakers too.

Most exhaust fan covers use a spring steel wire in a V shaped configuration. The bottom of the V is attached to the cover. There is a slot in the fan housing and by pinching the tops of the V togetherand insert them in the slots the spring pressure pulls the cover up tight to the ceiling.Carefully pulling the cover down enough to reach over the cover and pinch thewires together should allow the cover to be removed. Hope this helps.

. Bob

Possibly try spraying some wd40 where the shaft goes into the motor if that don't fix it get a new one

Check at the switch location to see if the switch is working properly. This can be done by checking to see if the switch
has voltage and is working properly. Turn off the switch that operates the fan and then at the electric panel, turn off power to the bathroom. Remove the switch from the box, leaving the wires intact. Once the switch terminal are easily accessible and totally away from any ground source, turn on the power and with a voltage tester, check to see if you have power to it. Now carefully turn the switch on and check the other terminal to make sure there is voltage. If you have voltage on both terminals, then the problem may be at the fan location. There is a junction box in it that has the termination between the hardwire cable and the receptacle leads. this may have become loose due to vibrations. check at that location.

here is a link to the part you want and lowes sells this also

http://www.truevalue.com/product/Kitchen-Bath/Bath-Fans/Bathroom-Fans/Bathroom-Fan-Motor-Blower-Wheel/pc/9/c/125/sc/1269/23309.uts?refineByCategoryId=1269

this are mostaly internal electric problem buy new one
the fuse 3amp are good for the fan
i think the motor bearings are goin and the motor are in unbalance.

The fan motor is pre-oiled and sealed so it can not be oiled if fan motor is squeeling then motor replacement is the only option. You can get replacement motors which is usually cheaper than buying a whole new fan. Will need to know the model # of broan fan. I hope this information was helpful. Please rate the information given. Good Luck and have a great day. Jeff

get a weighted damper and install over the existing vent. the weight will open when the exhaust fan is running and stay shut via the weighted arm.

same problem but l thing l solved it by ordering a new replacement from globalindustrial.com if you need more help email me at [email protected]

The motor is sized up. call someone to replace it and they should know how to remove the cover.