When I went to clean my caravan last Sunday I found out that only one of the mover motors was working. I proved that it was the control unit that was faulty so I need to find out how to get it repaired. A quick google search and I found A&R Electronic Developments. I rang them on Monday morning to ask if they could help and sent the circuit board by next day delivery that morning. I received an email at 11.45am on Tuesday to tell me that my repaired board had been posted and that I would receive it by midday on Wednesday. The parcel arrived on time, I refitted it that evening and everything works ok.
In my case only one of the two motors worked so I swapped the connections over and then just the opposite motor worked. This proved that it was the main circuit board at fault.
If you look at A&R's website there is a flow chart that helps diagnose the fault.
Success! Had a look at the mover this morning, and noticed a rubber cover had come off. We found the cover on the driveway! Gave it all a spray, fitted cover back on and its all working fine! So relieved!
------------- Enjoy life while you can, none of us know what's round the corner!