Matthew, if it locks the door and then does nothing, it could just be worn out carbon brushes on the motor (these stop water going in & also stop pump working). If the machine is dead (not even locking door) it could well be the main module. We supply a module for this (main one in back of machine) on a sale or return basis (so you can send it back if it does not sort the problem, less our handling charge of £12). Cost is £59.88 + £6 post (exchange). You can order it by going to our site at www.emwelec.co.uk and putting WF740 in the search box or by calling us on 0115 9652118. Tony EMW Electronics
www.emwelec.co.uk, November 2012