It worked for a total of about 10 minutes, after installation they checked all modes, everything was ok, but after turning it off it hummed (the impeller worked and did not turn off) after it calmed down, the next time it was turned on, the impeller did not start, it gave an error F4, the money was thrown away for the installation, what what to do with it now?
To offer a more complete review, I have added some photos for your consideration.
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