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The hole looks like it is a place that will not be near any refrigerant pipework, so should not be an issue.
Cant access your photo to see the ice, could be worth deicing it, use a hairdryer and once clear, retest the unit.
Does he mean the compressor ? did he do a gas pressure test to confirm the pumping efficiency of the compressor by tapping into the gas system ? or just guess that was the issue, and was he talking about the ice on the back wall of the FRIDGE, as these units will put all their energy to the freezer if it is not at temperature sacrificing the fridge, I would if I was you, unscrew the back panel in the freezer and just check there is no excess ice on the freezer coil, just for peace of mind before you scrap it.
Fan only works if the freezer coil is at temperature ( -25c ) at the evaporator sensor and the door is closed.
Remove the freezer drawers and check if you have an ice build up on the rear wall, it could be why you are getting the high temperature alarm, as excess ice and frosting on the coil behind the rear cover will stop the fan circulating the air.
The fault codes are nearly all the same for that control board, but with the units index number and service number from the rating plate, I can advise you further, as there are multi variations on that model number, bit like asking for a part for a Ford Fiesta.
The right hand green block, flashing with the red alarm, is high temperature in the freezer, as stated if a sensor fails the superfrost flahes in sequence with a set amount of green blocks on the left hand side, the differing green blocks point to the individual sensor at fault.
Faults with sensors on this unit involve the superfrost light flashing in sequence with the green temperature indicator blocks, There are four sensors on this unit, You have not mentioned the superfrost flashing, so I suspect you did not or have a sensor failure.
I would suspect the thermostat, providing the fridge is not in too cold an environment for the thermostat to switch the compressor back on after the auto defrosting it needs to be in a warm room. Switch on the CoolPlus function* At low room temperatures of 18 °C or lower: Press the Cool-Plus switch
The fridge has its own cooling plate evaporator behind the insulated panel in the fridge, there is a fan mounted in the top of the panel, depending on activation of the sensors the compressor will switch on / off and the valve will open / close to allow refrigerant to cool the evaporator down or defrost the evaporator, the fan is controlled by a sensor and door closure.
Fridge section has 3 sensors, Air, Evaporator and Bio Fresh, each controls various functions in the fridge, go to Liebherrs website and find an approved Engineer in your location or call them.
Hi, I would suspect you are missing the magnet in ice maker drawer, check it with the drawer alongside or swop them around. for further help we will need your model index and service number, not the one quoted from the manual as posted.
I would still check the connections, I know the silicone crimps that come with the sensor and the plastic box, its possible a wire has not been pushed in far enough before it was squeezed to make the connection
