Fisher Paykel Washer

Hello,
My washer is giving me a clogged inlet code every couple of days. I have cleaned the inlets and still get the code,not every time I wash. But if I take the discharge hose, and blow back into the machine until I hear water bubbling,it will work without a problem. This machine has had a recent pump and control board replaced, two months ago. I also checked the diverter valve a while back and that seemed okay. Truly puzzled on this one. Any help is greatly appreciated.
Thanks,Peter