Ceiling fan lights & fan come on without using remote

There are two methods used by various manufacturers to set the code. The first (and easiest) is if there are slide switches in both the remote and the receiver that's in the fan housing. (The switches in the receiver might be hidden under a rubber boot.) Just make sure that they're set to the same pattern.

More likely you have the second style (like I do). If there is a small reset button on the back of the remote, follow these steps:

1. Open up the fan housing to get access to the receiver module. If the fan is mounted close to the ceiling, you'll have to remove the whole fan. If it has an extension tube, just remove the cover near the ceiling - the fan, blades and lights can stay in place.

2. If you look carefully, there is a very small slide switch on the side of the module, toward the end that the antenna sticks out.

3. Using a small screwdriver, paper clip, toothpick, etc. slide that switch. You'll hear a high-pitched sound that becomes a beeping sound after a second or two.

4. Go to your remote. Push the reset button with the paper clip or toothpick, hold for two seconds and let go. (You should feel a springy button; if you don't, it's probably because you missed the button and are pushing against the circuit board.)

5. Hopefully you'll see the display show "SE oF" (i.e. Set degrees Fahrenheit). If you like Celsius, press one of the Temp buttons to toggle between F and C.

6. While in the "SE oF" mode, press the Fan button. You should see "Cd xx", where xx is a two-digit number. Push the Temp buttons to select your choice of a code number. Press "Light" to lock in the code number.

7. If you have other remote-controlled fans, make sure the remote doesn't affect any of them. If it does, simply choose another code number.

8. Reassemble the fan and/or ceiling housing, turn on the fan and enjoy the breeze!

On some you set a code in the remote control ..then you teach that code to the control unit ..on others you have to set dip switches on the remote control and on the fan to match .. some of the units have dip switches on the top of the fan motor housing ..some have code setting switches on the control unit located inside the fan .. at any rate the fan and remote have to have matching codes ..
here is some information on some units
http://www.ceiling-fans-n-more.com/ceiling-fan-remote-controls.php

sometimes the switches are set correctly but the contacts get dirty .. so on the remote, behind the batteries is the code switches .. you can operate each one a few times to clean them ... remember where they are set ... set them back that way unless you are going to change the switches on the module in the fan ... you can check your neighbors remote to see if its on the same setting .. if so one of you has to change dip switch settings on both the fan and remote.. on some older units the code is fixed on the receiver in the fan .. the code is marked on its box .. that code has to be set into the remote unit and is not adjustable ..

this might be the mfg for the hampton bay fans ..it might be a little help
http://www.kingoffans.com/#/products/FAQ