BFT Gate won't open or close

[Steveturbocal]

Hi Newbie here with a problem. I've recently moved into a house with an electric sliding gate. Its got an BFT deimos A600 motor and had been working fine until we had a rather cold morning last week and now wont open or close. All the photocells are working and clicking when you cover them and you can hear a relay clicking when you press open or close on the remotes. I've had the plastic casing off the motor and tried to open and close on the buttons on the top again it clicks but nothing. the Display reads "bAr".

Is this some form of fault code? ive tried googling it but cant seem to find anything can anyone shed some light on it please??