Beko 8227 washing machine wont drain water,any ideas?

Hi all. Recieved my beko wme 8227 washing machine this morning. I removed the 5 bolts from the rear, connected the cold water pipe, connected the drainage hose to the sink drainage which i had my previous machine connected to. Switched water on and then powered the machine up and set it to the quick wash setting. Once it filled with water, i cancelled the wash as per instructions and holding the button for 3 seconds, the machine paused and now fails to respond to any commands, even the ' 10 second holding start button' to cancel and drain.

Argos are going to arrange a replacement whilst this washer sits in my kitchen full of water. Am i missing something in order to drain the water? This washer had a load of good reviews and i had some vouchers to get a discount to..but not sure what to do now.

Thanks in advance

Regards

Asif