I have a Saeco Primea Touch Plus machine that doesn't froth the milk properly and makes a high pitched squeal.

Try a reset on it.

https://www.google.com/search?q=Saeco+Primea+Touch+Plus+reset

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My Saeco Primea Touch Plus is stuck in milk rinsing cycle. HELP

Hi. Have you removed the white wheel and tried to clean it? Check the O-rings on the frothing part for damages.
Sometimes cleaning it hasnt helped at all, The solution for it that might sound crazy =) that fixed it for me at that time was to block the 2 holes with you fingers(be carefull its hot) where the milk comes out from when you make coffee, you get a little backpressure in the milk circuit when doing it. Try 2 or more times. It helpt me.

I have the same problem, my wife complain me everyday, now we use our coiffe machine 90$ from sears it`s still better then this 3200$....

If you don't perform the milk cleaning process for 21 days, the machine will blocked you from dispensing milk product.

It all depends in the Cappuccinotore(milk frotting part) Change a new one or
Think of a way to reduce the suction tube diameter smaller... to get milk and steam mixture correct.

If you use the milk feature, please make sure that you rinse after making a milk drink or the machine will automatically request a milk cleaning cycle which is different than a rinse. For example if you make a milk drink and you skip the rinse cycle and leave the machine without rinsing for more than 20 minutes it will schedule a mandatory milk cleaning cycle.

It is okay to skip milk rinsing if you are making drink after drink as long as you rinse after the last cup.

Hope this helps you out.

Saeco's First Authorized Service Center of New York
Cerini Coffee Services
www.CeriniCoffee.com

Is this thread still active?

When you say change Oring do you mean the Oring in the capp. or in the machine?