I have 3 fans control by 1 switch on wall
I want to control the 3 by one remote control hampton bay
But only 2 responde to the control the other one does
The opposite (if I turn on the light only 2 comes on and
The other comes off ) the 3 recivers has the same code
As well as the remote control.

When controlling more than 1 fan from 1 control, it is possible for 1 or 2 of the 3 not to receive a signal. If you can get far enough away from 2 of the fans too where the 1 fan will receive the signal, you can get them all back "In Sync".

It's a wall control, yes? My only suggestion is to disconnect the fans one at a time, set them all to the same setting one at a time, and start over.