Hi I have a hotpoint aqualtis washer model number AQGD 169S wish started flashing fault code F10 I cleared blockage and have replaced pipe between drum and motor, works for couple washes then F11 code came up turned it of for a couple of minutes checked for blockage drained water disconnected replaced pipe and reconnected worked for couple of washes and now F10 code checked for blockage and drained water no blockage what could be the problem?