Audi A4 B7 1.9 TDI: AC Stops Cooling at Standstill After Compressor & System Repairs

Hello.
My car is audi a4 b7 1.9 tdi. Last year I bought this car and at the beginning I added a factor to the service and unfortunately I found it unlucky to have it so bad that it has seized a compressor that worked earlier. I chose another better service and replaced the compressor, air conditioning coolers plus cleaning the entire system from filings (yet another service replaced the compressor without cleaning it and the other one has faded). I replaced the compressor twice, the overall costs increased to a large sum but now everything is fine. The air conditioning is cooling for the second year but the problem appeared in the heat which now passes through our country, so the air conditioning turns off at a standstill, while driving it cools as it should.
The air conditioning fan is spinning but it turns out to be too inefficient. The service that fixed my air conditioning firmly stated that the fan controller was to blame. My question is whether it is for sure because I do not want to put extra costs in air conditioning which has cost me a lot anyway. I borrowed a cable with a laptop from a friend who possesses vcds. I did read the errors:

I received such a mistake, deleted it and after two weeks it has not returned yet but the air conditioning at the stand still works badly.
Yesterday I did read the data that the computer requires a fan speed of 86% and the actual read speed is 78% and did not rise above this value. I am asking my colleagues to show me what readings to make to see if there is a damaged fan, fan controller or maybe something else because I do not want to invest money in the dark where I can not see what is damaged.
The repair is private (own car) not for commercial purposes.
Regards

The reason may be too low power of the alternator at low revolutions in relation to the demand of the air conditioner which in such heat works at high parameters. Stop at a standstill and hold the car for 1500-2000 turns and see if it turns off. The reason can also be insufficient cooling of the air-conditioning radiator at a standstill as it is when driving.

I forgot to add in the previous post that engine speed does not affect the operation of air conditioning. I suppose this is something with cooling but exchange the blind driver I see on average.
Regards

Pour the condenser over with water and see if the efficiency increases.

I checked at low speed how the car rolled and cooled. My question is as to the speed declared and the actual fan. As well as this error which I attached earlier.

What do the system pressures look like?

Gentlemen from the repairing company rated the pressure too high when stationary as it is very hot outside.
If you need any data from the vcds program, please write with great pleasure to solve my problem

henryxxl wrote:

Gentlemen from the repairing company rated the pressure too high when stationary as it is very hot outside.

And there is already a lead.
Now what do the coolers look like, especially the space between them?
Aren't they covered with crap, dust, straw, leaves?
As there is ok, unfortunately the fan to be repaired and replaced.

The radiator was replaced with a new one for repair because from what I know it cannot be 100% cleaned and the compressor would seize again. The problem is that these mechanics have found that the fault is the controller and not the fan and I would like to know what exactly. The fan controller is located next to the fans.

PS.
Are these fans repairing?

henryxxl wrote:

The problem is that these mechanics have found that the fault is the controller and not the fan and I would like to know what exactly

And for what, you don't fix it.

It's about the space between the coolers.
The fan can be checked from the tester level.

Tomorrow I will check this space between me, it seems original. As far as the test is concerned, I did it and spins like in normal work, unless there is another test.
As for the matter that I should not care because I do not fix it, I will say that they do it for my money and if they are to exchange in turn, I thank you for such repair. Air conditioning made by them was a year ago and then there was this problem but I forgot about it because the days were colder and this year the sun is starting to warm up again and I want to fix it myself.
I am interested in the short circuit error of the fan, I have to get to it maybe something is rubbing against the winding.