Frost free freezer icing up

I would agree with the the last poster just one final thing to check make sure the bottom of your fridge in the back of your fridge is dust free dust builds up on the condensers and they get blocks and they don't work as efficiently and also make sure there's the correct space between the back side top and bottom of the fridge according to the specifications I don't have them with me but you should have them in your user manual if you have one.

We had the same problem with our refrigerator just yesterday. Defrosting (even tho frost-free) cleared up the airflow problem-- If it's frost-free, when it defrosts enough to allow air flow, the automatic defrost can take over. Cause was stored food blocking the vent between the freezer and lower part of fridge.

this fan needs to run when the compressor runs,check fan blade for being jammed by ice if you have this much ice on back wall as ice will stall motor,if no fan there will be no cool air to refrige compartment also the defrost drain tray will fill with water then freeze over which in turn floods the freezer floor and refrige compartments cause it cannot drain to the pan in the bottom

Frost can build up for multiple reasons. Most common is the start os an iceblock. Other reasons can include condensation from door being left open or opening too much. It can also happen from backsplash from the inlet tube for the ice maker. If the fridge is running non stop. It sounds like the ice block is forming and the temps are not getting to the program temps. If at factory setting the freezer should be at or around 0 degrees and fridge should be between 42 and 48 degrees. Has the fridge shutdown at all to go into defrost? The defrost timer may have went out and is causing an iceblock. If there is an ice block always change bimetal/ defrost thermostat.

If you need any further assistacne please feel free to comment me.

look along the door seals to ensure they lay flat agaist the body, as an air leak encorages fros/ice build up even in a frost free unit.use a hot cloth to adjust.

We have the same and I think it is because the freezer door bounces open when we shut the fridge door. Then the freezer compartment ices up, the fan clogs up with ice and cannot blow cold air into the fridge, and the fridge gets warm and the milk goes off.
Solution? We have bought one of those child safety clips (search for fridge safety clip or lock) to hold the freezer door closed.
Simple design error. Expected better from Bosch :-(

If freezer is icing up, you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow.
You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model

servis frostfree fridge freezer not working after 2weeks holiday returned it had completely defrosted fridge & freezer power supply still connected. warning light on. done all the trouble shooting in the srvice manual still want go cold or freeze. light on in the fridge, no water in the rear tray & cleaned the overflow pipe??. Model No M0330-ALU 5yrs old. think it has 2 seperate thermostats, surely they wont both have gone at the same time???????

It's stopped completely 
It's not cool
Cooling is poor
It's noisy 
It leaks
The freezer compartment is icing up
The food in the refrigerator freezes
There's water dripping inside the refrigerator
The refrigerator never cycles off
The ice maker has a problem
There's an ice- or water-dispensing problem

1. Checking/changing a common light switch
   
2. Common frost free fridge parts learn "what" is called "what" before starting your repair
   
3. Compressor won't run or it is "clicking' on and off
   
4. Cleaning the condenser coils
   
5. Can my fridge be moved on it's side?
   
6. Defrost drain freezes and then overflows
   
7. Freezer door pops open when I shut the fresh food door
   
8. GE Arctica repair tips...frost free trouble, freezing food, ect 
9. How refrigerators work
   
10. How a common defrost cycle works
    
11. How to change a common condenser fan motor
    
12. How to reverse the refrigerator doors on your refrigerator
    
13. Help for storing an appliance
    
14. How to change a common Whirlpool evaporator fan motor
    
15. How to install or remove common shelf supports
    
16. How long can I store food in my frost free refrigerator freezer and how?
    
17. I heard a sizzling noise inside my freezer section and it looked like something on fire when I opened the freezer door. What should I do?
    
18. I feel heat or warmth around my refrigerator doors...help!
    
19. Important Disclaimer
    
20. My fridge is running but not cold enough  - with Frost free repair information as well
    
21. My refrigerator is leaking water inside the fridge
    
22. My fridge is leaking onto the floor
    
23. My fridge is freezing things
    
24. My fridge makes a bang noise when it shuts off
    
25. My Frost free fridge will not run at all
    
26. My fridge is making   screeching/squeak noises
    
27. My GE SxS fridge door has dropped and/or won't open or close properly
    
28. My water dispenser has white flecks in the water...what's up?
    
29. Mending a crack in the refrigerator liner
    
30. New adaptive defrost information
    
31. Ohm meter testing a start capacitor
    
32. Odor complaints with your fridge
    
33. Replace a door gasket on a refrigerator
    
34. Sample wiring diagrams
    
35. Stainless Steel Cleaning
    
36. 
    

If the frozen side is colder than normal and some extra frost is forming where the fan blows,and there is ice in the bottom of freezer compartment, and the cool side is not cool enough, their is a good possability the defrosting unit is not removing all the frost and ice . the defrosting unit has a timer (usually near thermostat) that turns off the cooling fan and compressor and turns on a small heater around the evaporator ( about 20 minutes every 2 days) (evaporaror is cold heat exchanger coil inside the back wall behind a cover near the recirculating fan0, the fan circulates air to both compartments through two small openings, if these openeing are closed by ice buildup cool air can not circulate to the cool side. cure 1. remove all food and leave fridge off for 24 hours with doors open (take precautions to ensure children can't get locked in side and suffocate, if you get a qt of water in bottom of unit (may leak on floor) ice buildup that the defrost heater can not remove melted and was your problem . turn frig on replace food on unit. cure 2. turn frig off, remove food from both sides, remove shelves that block access to evaporator, remove cover over evaporator if you see the evaporator coils free of ice look at openings (2) to other side, one may be blocked with ice the other with frost, carefully melt ice with hair dryer.
If the evaporator coil is solid ice heater or timer or fan has failed. good luck