Dave, sounds like your main module. We stock them at £53.88 + £6 postage (exchange). This is ready programmed for your model number. To order, go to our website at www.emwelec.co.uk and put IWD7145 in the search box or call us on 01159652118. Make sure you include the info at http://www.emwelec.co.uk/info.jpg You will still have the option of returning the module within 14 days for a refund (less our handling of £12) if it does not sort out the problem. Tony EMW Electronics
Tony
August 2016