Have a Hampton By fan/light unit that in only operated by a remote. Worked fine for years since we moved in until the other day - light control stopped working - in the on position. Fan control works fine and red LED lights when either fan or light buttons are pushed. Changed the battery but still the same problem. Would appreciate any help - thanks, Howard

PROBABLY the receiver, but first try changing the frequency of the remote and receiver. See:

Ceiling fan remote controls - help and FAQ- Ceiling Fans N More