installing variable speed switch
I installed a variable speed 'fan' switch on my 17 year old Hunter ceiling fan. Now there is a loud humming noise that varies with the speed. I've oiled the fan - no change.
I checked with my local hardware store where I bought the switch. They suggested checking the wiring - it's fine.
Re: installing variable speed switch
It's the electronic speed controller that's causing the hum in the fan motor.
Check out # 15 in this faq link ..... [URL]http://www.hunterfan.com/pages/faqs.php?faqID=1#15[/URL]