Diane, you need to change the main module in the back of the machine (this is the most common fault). We stock it 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 WF740 in the search box or call us on 01159652118 and speak to Andy. 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, January 2015
