I have just purchased a new blomberg freezer and it has come with the handle already fixed which is at the wrong side how do you change it over

Minus 20' Celsius is too cold. Change it to -18'C. Also check that the door gasket is in good condition and sealing well.

Here is the manual if you need it. Troubleshooting is at the end is not particularly good. Page 9 suggests that the Warning icon is the triangle with exclamation mark (!), is that the one that is flashing? Other icons flashing is indicating Fast Freeze Mode.

Make sure the condenser coils at the back are clear.

FNT 9671P - Blomberg

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Symbols and their descriptions. This instruction manual contains the following symbols: C Important information or useful usage tips. A Warning against ...
20 pages

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I doubt you have the specialized equipment needs to do this successfully. I wrote this for vehicle AC, but just change the word 'AC' to 'Fridge'. The procedure is the same. You can't eyeball this stuff. Also, with the new compressor, did you add oil and a new dryer?

https://www.fixya.com/cars/r29878326-recharging_vehicle_air_conditioner OR Fridge.

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what did tech say was problem --closed loop doesnt mean anything ---get a second appenion

This is far too vague to diagnose. Get out your multimeter and start testing continuity on elements and switches. Turn off power first.

Page 27 and 28.

built-in oven - Blomberg

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Please read this user manual first! Dear Customer,. Thank you for purchasing this Blomberg product. We hope that you get the best results from your product.
32 pages

Hello, I made this repair Oct 20, 2021. I have the exact same Blomberg DV17542 dryer. It was making a horrible vibration sound while empty and full. Not exactly the sound you had but a loud vibration noise. I just posted the video on youtube, search "Blomberg Dryer Vibration Blower). The top panel was vibrating loud but I knew there was something internally wrong with it.
I purchased a rear bearing($20 Canadian and 4 new frictional glides$7 each(where the drum rests on at the front of the dryer). I took the dryer apart, it was fairly straightforward, removed the drum, changed the rear bearing and replaced all 4 glides. I figured this would fix it....but no! Was disappointed hearing the noise again.
I figured it had to be the motor or the blower fan. I inspected the blower fan from the back without having to remove it and bingo! I could see lint or something else inside the blower wheel.
I used needle-nose pliers to reach in and pull out what was inside. I pulled out a fabric sheet covered in lint, and when I pulled that one out I could see another behind it. I pulled the second one out, vacuumed the fan, and made sure it spun freely and wasn't damaged.
Turned the dryer on and could hear a pin drop it was soo quiet. Problem solved. Any questions let me know, it could be the bearing, frictional glides, motor or blower wheel.

Defrost sensor needs to be changed in freezer

maybe a good kick to the door or is it still under warranty? Give the dealer a call and tell em to come round and fix it..

What is the fridge doing, is it not cooling what?

If handle is broken get a new one and by removing inner door panel install the new one. Parts available at attached link Search Over 2 1 Million Appliance Parts

You may have changed the wrong part.
The defrost heater and defrost thermostat are bad.
They are located inside the freezer coils behind the freezer panel.