Hampton Bay ceiling fans are a proprietary brand of the Home Depot. Each Hampton Bay ceiling fan equipped with a remote control comes with a control and receiver. The receiver and the control both have a set of four dip switches with two positions on each switch and by changing the dip switch positions; it changes the frequency on the fan. If you have two Hampton Bay remote fans you should change the dip switches, allowing them to operate independently. Hampton Bay ceiling fan remotes are preset on the same frequency at the factory.
Turn off the breaker that powers the ceiling fan inside the main electrical panel.
Remove the canopy at the top of the ceiling fan where it attaches to the ceiling by removing the four screws that hold it to the mounting bracket. This allows you access to the remote receiver and the electrical wiring.
Slide the battery cover off the back of the remote control for the fan. This exposes the dip switches for the remote control.
Change the four dip switches on the remote receiver inside the ceiling fan mounting area to match the four dip switches on the remote control.
Replace the canopy from the ceiling fan onto the mounting bracket with the screws you removed in Step 2. Slide the cover back onto the remote control to cover the battery and the dip switches.
Turn on the breaker that powers the ceiling fan inside the main electrical panel.