Not what I expected (Karcher WV60)

My 1st Karcher window cleaner failed after around 4 years use, it kept turning itself on when not in use and I got no help from Karcher customer services. As a result I purchased a new Karcher Window Cleaner (WV60) which has failed after 11 months of use.

I have a walk in shower and use it to clean the glass and Aqua panels on a daily basis. About month ago it started making a very loud noise when operating, sounded like a jet engine. Later on it would cut out then restart by itself for a 5 second burst then shut down again, then repeat and repeat. As all the internals are in an enclosed unit and I did not want to take it all apart, I have had to but the item in the garage so that I can't hear the sporadic tuning itself on and off.

My impression was that Karcher were the leaders in this type of equipment but twice bitten I fear they are not and am searching for an alternative manufacturer.

If you look at other review sites you will find other disappointed customers having experienced various faults.