Sounds like a main module fault. 
We stock it at £53.88 (exchange). Module is all programmed and 
ready to fit. If it does not sort the problem, 
you can return it for a refund, less our 
handling charge of £9+vat. Go to our site at 
www.emwelec.co.uk and put WM12X in the search box or call us on 0115 9652118
Tony www.emwelec.co.uk
                
 EMW Electronics
                
 May 2012