error f-5?

Hi,

I have a washin mashine and It gives error F-5.

mashin take in water and turne in some minute then it sees that it is unable to send out dirty wate.

I have chekd that tubes are clean.

Mashin is an Ariston AVD129 and I don't find any information on the internett about this error . I thought maybe it is similar to other waskin mashine.

How can I fix this problem?

I appreciate if you answer my question.
Could you please send a an answer to martes62@gmail.com

Thanks

Regards

Landari