Ice build up under bottom drawer of Liebherr frost free upright F/F

SOURCE: the refrigerators accumulate ice

the fridge distrubutes cold by air movement. A overstuffed fridge can have trouble. There is a fan that blows a controlled amount of freezer air over to the food side, altho when this goes you usually have frozen freezer and food too warm. Make sure the air is allowed to move.

SOURCE: liebherr frost free fridge/freezer

Try these solutions in these order:
1. Switch off the fridge and leave the door open overnight. Switch it back on in the morning.
Explanation: The sensor inside the fridge gets frozen and cannot control the temperature properly.
2. Switch off the fridge. Unplug it. At the back of the fridge (behind the unit, not inside) there is a large grid. Clean it with a hoover thoroughly. Open the fridge. Dry the back of the fridge if wet (inside the fridge). If frosted wait for it to defrost and then dry it. Plug in the fridge. Switch the fridge back on. This one worked for me.
Explanation: The dust in the grid deprives the fridge from cooling down and the unit can't control the temperature in the fridge section.
3. Switch off the fridge. -Unplug it. Empty it. Turn it upside down. Plug it in. Switch it on for 24 hours. Switch it off. Unplug, return to normal and switch on.
Explanation: This has to do with the pressure of the gas inside the compressor. I have not tried it but this advice as given to me by a qualified electrician when I commented the (in)famous F2 problem in Liebherr fridge/freezers.
Hope it helps. Regards. Albert

SOURCE: there is frost build-up behind the drawers in the

You have a defrost problem. If you do not plan to fix your self. You can take the back panel out from inside the freezer. Use a hair dryer and defrost then replace the panel. This will allow you unit to work normally for around 3 to 4 days. Anough time to get someone out to fix. If you plan to repair it your self. when you get it defrosted, ohm your heater that is found installed within your coils inside the freezer. If no continuity they are bad. Replace them. Also check you termination thermostat. They sometimes go bad. Most of the time it's the heaters. There is a slight chance that it could be the timer but with the new models that have the PC Board timers it's not likely.
Please rate solution if helpful.

SOURCE: Ice build up inside refrigerator Liebherr K3150

may be you have a bad temperature sensor or bad control board.

SOURCE: I have a liebherr refregirator

NOTE: This
is a multi-solution answer since I don't have all the tech from your question to pinpoint your problem
But the solution is in here generically, if you read and study the solutions very,very carefully.
Check Temp inside freezer. It has to be down to about 10 or 15 degrees
This can cause slow ice making if its too high even tho its freezing everything else at 25 degrees
See if water is in icemaker.
Pour water in Ice Maker and wait to see if it ejects.
If it ejects thenyou need to replace water valve in rear bottom of fridge(Its the part that
attaches to water line out of wall)
If it doesn't eject then it is a faulty Ice Maker.
If its leaking or no water at icemaker or door either one, then the valve at the rear bottom of ref needs replacing
First I would check the fan in the freezer. Listen to see if it is running
It moves air to the ref from the freezer
Then check to see if freezer control is turned WARMER, which makes the Ref. colder
Also if it is getting drinking water to the door but not to the icemaker (or vice versa) Then you need to replace
the water valve at the bottom rear of the fridge. It is a double valve and one side is not working
Also this might be a common Defrost problem, Ice
is not being melted by the defrost system.The fan can't blow through the coils into the fridge.
Take out back panel of freezer to check for ice buildup. The coils should be clean.
There are three components to a defrost system- a heater,heater thermostat, and a timer unless you have a defrost electronic card.
Its best handled by a Technician but you could possibly do it by taking your model number to the nearest appliance parts store and asking for the parts. They are mostly located in freezer ,behind back panel on freezer coils.except the card which is usually located in ref The parts store will have info
Also check fan undernearh Ref in the rear
Clean condenser coils underneath
.I'm including my article on Refrigerator Repair for your help and convenience.;
Please click or copy and paste into browser for Article
http://www.fixya.com/support/r5816737-fix_refrigerator_psychologically
Thanks for using fixya
Leo Ponder
imufo2
PLEASE GIVE A TESTIMONIAL AND VOTE FOUR THUMBS UP IF THIS WAS HELPFUL