Hampton bay Windward 52" fan.
LCD remote - no pull chains

Light does not respond to Remote -
9" circular FL bulb - I've replaced bulb - not the problem

Assuming remote is OK
Remote activates fan so xmit and recv are working. And codes are correct

LCD shows light brightness going up and down but bulb does not react (remains off)

Assuming problem is inside the fan - light diming control circuit- what else can I try, check, test,
Are replacemnt parts available and what do I Order

Hi there, it's sounding like you are having a receiver problem with the fan. Receiver issues sometimes have these kind of symptoms. Try checking this article for help with troubleshooting your fan receiver (http://www.ceiling-fan-brands.com/ceiling-fan-remote-and-receiver-problems.php).