The Fan in my Nutone bathroom light/fan is not working...

I just installed one of these; the directions were not really helpful, and I'm fairly handy doing these things. Anyway, the 'specs' say this is 2 sones, and mine is pretty quiet. I did have to tighten the acorn nut that is under the light bulb, that holds the light fixture to the rest of the unit pretty tight. My noise was coming from vibration, not the fan 'noise'.

Here is a link to the PDF instructions.
http://nutone.com/PDF/InstallGuides/741seriesins99042913.pdf

Leviton triple switch
Nutone P66V

Nutone looks like an ordinary three-switch combo being marketed as a bathroom 'fan switch.'
The screws on the device would tell the story.

Look at the Leviton screws:
The switch has dark-colored screw on one side >> the hot from breaker always connects to dark screws.
Other side of switch has 3 silver-colored screws, but these can be brass colored screws > the wires to fan light and heater connect to each of these screws.

Most likely the Nutone switch is identical to the Leviton
I say this because the descriptor on Amazon describes it as a 'fan' switch.
It's being marketed as a bathroom fan-light combo switch >>> so it looks like an ordinary three-combo switch

Hi,

Here is a tip that I wrote about cleaning bathrooms fans that also addresses that issue at the end...

http://www.fixya.com/support/r6871896-broan_bathroom_fan_care_cleaning

heatman101

Hello,
The fan/motor part of the Broan fan is replaceable. They are actually very simple to take out and install a new part.

The part can be easily purchase here...

http://parts.broan-nutone.com/broan/Shop

Heatman101

Hi,

Either the plug came out, the receptacle wiring came loose or the bulb is out,,,

http://www.fixya.com/support/r6871896-broan_bathroom_fan_care_cleaning

heatman101

fan blades touching sides of housing,also runs caused by back draught

If the hole is big enough, 3/4 inch you can use the same holes for the new wire cable.

There's probably a thermal switch in the fixture which turns the fan on when the lights are on for a period of time and heat accumulates in the fixture. It sound like the heat from the attic is setting off the thermal switch. When the attic heat drops, the fixture works correctly.

This is a catch 22 situation, because if the upper housing in the attic is insulated from the attic heat, the insulation will prevent heat dissipation from the heat generated by the fixture's light bulbs. So, for safety reasons, the upper housing should not be insulated.
I'll need to work on this to come up with a fix.

Chk circuit breaker then ck GFCI.