Could you attach you xar file? I don't suspect this is a cause but we could negate it from a possibility. Problem is if you look at the many things that may cause this as in my link above, it's hard to chase down. The Error code: 1F is strange. I can't find anything on the net to follow up on this (apart from LG Fridges but I think we can rule this out ).

I'd get in touch with support re this matter, perhaps Error: 1F means something to them?