If it does not reset by holding in the start button, then you need to have the main module repaired. We repair them at ÂŁ62.28 inc return post. Send it to us for same day repair. Include your name/nature of fault and a daytime tel no. EMW Electronics, Millfield, Oxton, Notts, NG25 0TD Tel 01159652118
Tony
April 2017