We have a fan made by harbor breeze and it has been working perfectly, until recently, it has power to it but neither the lights nor the fan will turn on. It has a remote but no wall switch and the remote is giving out a signal.

Has someone new been in that room recently? Perhaps they used the pull-chains on the fan itself to turn it off.

A long-shot... but easy fix if that's it!
WallyH

How have you confirmed ", it has power to it " The only way is to open the canopy, is that what you did?