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Bosch Fridge Freezer, freezer not getting below -1 deg C

Have a Bosch KGN 33V60GB/01. The fridge is fine, but the freezer only getting to -1 deg c. Have checked the coils inside near defroster, and they aren't frozen (but pipe from I assume condenser to coils is frozen up, just on the pipe for a few cm, then nothing. The rest isn't frozen where the autodefrost would be.

I can hear the fan when the door is closed. Compressor is hot to touch (almost too hot to touch). If I feel the condenser coils on the back of the fridge they aren't hot at all at top or on the rhs or anything. So it feels like the condenser is working hard, but not a lot else happening maybe ?

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Hi @ian8881

If the ice build up is on the pipe coming from the condenser unit into the evaporator unit, it could be due to a lack of refrigerant i.e. a leak. Perhaps check for any oily residues around the compressor, on the condenser unit and any exposed piping. There's a special oil mixed in with the refrigerant that is used to lubricate the compressor and if there's a leak, the gas will escape undetected but the oil may leave a trace, but not always.

If the ice build up is on the pipe leading from the evaporator unit to the compressor then it could be due to a clogged filter dryer in the line

If either case, the sealed system would have to be accessed and the high and suction pressures tested to know what the problem is.

Depending on your location, you may need to get a licensed repairer to check this out, due to the environmental regulations regarding the handling of refrigerant gases, that may be in force. (where I am you can't buy refrigerant gas without a license) They also have the necessary equipment to test the pressures and also to check for a leak.

Here's the parts list for your model, that may be useful if it is a faulty filter dryer, that needs replacing (part ID 0103 - part # 00093110). Search online for the part number only to find suppliers that suit you best.

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