There could be several reasons that a garage door is not working and providing the right information to a technician can greatly help the repair time and save a lot of time and money.
Does it seem like the remote control is communicating with the roller door system? When pressing the remote button does the unit reactor make any noise?
If there is nothing it could simply be the batteries in the remote control or the power to the roller door unit.
To reset the unit you will need to unplug or turn off power for around 10 seconds.
