Hello, I bought a V15 detect absolute yesterday and after 2 mins of cleaning it said the filter needed cleaning, I looked at the filter and it was like new and the vacume hasn't even sucked any dirt or dust yet. I got the warning to go off but to only come back on after couple of mins of running. Again without any hard cleaning. I took the vacume cleaner back and got a refund, is this a common fault or was i unlucky and should buy another?
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