Suggest you read your owners manual or if you don't have one either get one from the Simpson agent or Google it online. It will tell you what the error codes are when it beeps. I can't tell you what your error is because you have to count the number of beeps and put that together with which lights are on to determine the error code. Probably either drain pump not working or lid switch faulty. Check the drain pump for blockages.
Lincoln Appliance NZ
October 2011