1) About the essentials
Batteries: Check the quality of the batteries, whether they need instant replacing or not? You may observe that when any button is pressed, the light on the top of the Sky remote is no longer flickering. In this situation, replace the old batteries with a set of new one. Check whether the problem is resolved now or not?
Selection of accurate mode: While trying to manage the Sky+ box or your TV set, verify the remote is set to the accurate mode. With the purpose of managing the Sky+ box, always press sky before pressing any other buttons.
Test out the sensor: Make sure there’s nothing blocking the line of sight between the remote and the Sky+ box.
Verify the TV is correctly tuned to Sky: If you're trying to manage the Sky+ box with the aid of remote, ensure the TV is set to the correct output for Sky TV.

2) How can I Reset the Sky remote?
You can attempt resetting the Sky remote with the help of these steps:
Take away the batteries, press and hold down select for few or 30 seconds.
Now, re-insert the batteries, put back the battery cover and Press sky on the Sky remote.
The remote control will flicker two times.
Press TV guide to view the Sky Guide.
Verify whether the model of your TV has been exactly programmed with the Sky remote or not? You can look for the online tool; simply enter the TV’s model, choose “Get my code”. In this way, you will get a full list of standard codes for the TV manufacturer that will work in compatible with your TV.

3) What to do if the problem still persists?
If the problem is not solved with the Sky remote, you can order and purchase a new set from the “Sky remotes and accessories”.