Tracey, it probably means your main module has failed. Sometimes they give F01, F05 or F10 faults. They are not too difficult to change - if you search F01 along with WMF760 on youtube we show you how to change it. We stock this module at 56.28 + £6 postage (exchange). This is ready programmed for your model number. To order, go to our website at www.emwelec.co.uk and put WMF760 in the search box or call us on 01159652118. 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
March 2015