Oven displaying three reversed C symbols

[cristianc]

Hi. I have a 4 year old Candy electric oven that stopped working. There's no error code on the display but three reversed C signs, each followed by a dot. 

Something like this: ↄ.ↄ.ↄ.

I tried to remove the power for 20 mins, didn't help.

Code on the display does not show in any manual.

Any idea?

[cristianc]

Or could also be three right squared brackets: ].].].