King of Fans (aka Hampton Bay) apparently have the policy of trying to avoid honoring warranties. One of the easier methods for doing so is to ask for a UPC number, something that you'll only find in your instruction manual (if you still have it), or buried so deeply in the fan motor that it is a serious impediment for finding it. In my case, I eventually found the instruction manual for my Windward III fan, which, like many others stopped working due to a receiver failure.
However, for those of you who have discarded your instruction manuals, I found out a way to address the issue (at least until King of Fans changes this): download the manual for your fan from their web site (
www.kingoffans.com). The UPC codes are printed right within the downloaded manual. For those of you who, like me have failed Windward III's, the UPC codes are 082392551568 for the white version and 082392551575 for the brushed steel version.
Be careful when ordering the replacement receiver -- they will try to charge you for it by saying that it is not warranted. In my case I needed to call them back and read the warranty information to them that clearly says it is, and then send them a copy of my order to prove the purchase date. The extra work is worth the $42+ that they charge for the replacement receiver.
Good luck!