Question about Broan-NuTone N-8663RP Combination Light Fan Exhaust Fan
Broan combo Light/Vent Fan/Nite light fixture. Wired to Levitron combo three wall switch. Seems to work fine until the attic temperature exceeds 130 degrees (summer in Arizona!) Then both light and fan come on when either switch is opened. Night lite switch does not seem to be affected. When temperature drops below 115 in the attic, the switches operate correctly. We've doublechecked the wiring over and over. Can't find the problem. Could it be the fixture?
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.
Posted on Jul 20, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 01, 2013 | Broan-NuTone NuTone Ultra Silent...
Aug 05, 2011 | Broan-NuTone N-8663RP Combination Light...
Jan 08, 2011 | Solar Fasco Model 621 Wall Switch For...
Jan 03, 2011 | Broan-NuTone (668RP) Fan
Nov 18, 2010 | Broan-NuTone N-763RLN Combination Light...
Oct 28, 2010 | Broan-NuTone P66V Fan Control Switch
Apr 17, 2010 | Broan-NuTone Broan 110 CFM Premium Bath...
Jan 17, 2010 | Broan-NuTone N-8663RP Combination Light...
Oct 09, 2009 | Dryers
Nov 04, 2007 | GE Spacemaker JVM1640SJ Microwave Oven
540 people viewed this question
Usually answered in minutes!