I have the same refrigerator and spoke to a very helpful guy (John Harvey) today at Dometic UK. He asked me to send him the details of my refrigerator and he will order the required parts from the US and find an engineer who is qualified to fit it for me.
Contact details for Dometic Technical Support in the UK
Tel: 0844 626 0130
E-mail:
john.harvey@dometic.co.uk
Hope this helps