Domestic Appliance Forum

My Belling dishwasher has come up with error code E4 - says either a leak or overfill. Alarm sounded the last time I used it and I thought it was beeping to say wash had finished - first time I had used the timer so when I saw E4 code thought it was something to do with using timer.
I have now gone to use it and it beeped and I saw E4, left it for a while and I could hear some whiring noises but then everything stopped and code is still there.
Any suggestions or do I need to call an engineer?
Thanks