Its a WTL84141W S/N-23107474-09 , if you remember Dave last year the problems i had with this model not unlocking the door at the end and you advised changing the heaters on them which worked fine. This ones got same problem again and even with heater replaced still the same. It does the wash no bother but at end when it should unlock all the happens on of the led lights just keeps blinking and going round the display and even leaving it for awhile dont make any difference, only way to unlock door is to switch it on and it opens straight away