Good morning, this fault code is associated with a faulty PCB\control board, which is around £150 from here, if you would like me to recommend an engineer please let me know your postcode.
Good evening, I havent heard from you, I just wanted to follow up to see if you require any further assistance?
If the unit is only a couple of weeks old I would look to contact the retailer and get a swap out under warrenty.
I am afraid so, this isnt caused through poor installation.
Appreciate if you can rate the service received today so I may close your question.