Candy frost free fridge freezer .freezer working ok

Sounds like the defrost system of your freezer is not working. It could be either the defrost timer, defrost thermostat or the heater has a problem. The defrost timer turns off the compressor periodically to sent power to the defrost heater via the thermostat. The defrost heater then powers up and heats the evaporator coil to melt the accumulated ice buildup on the cold coils. Most likely issues are that the timer motor is not advancing the timer or the heater itself has burned out.

move the box to a warmer place,the outer shell is too cold....hence freezing drain/clogging

Is your circulating fan working?
Sometimes they stick and need a shot of WD 40 and then work
it back and forth a little until it wants to take off again. Keep me informed
and PLEASE give a Thumbs Up for the effort. The Raz Shack

Check the vents in the fridge side and close a little if you can. On the freezer side just for good measure>>>>
Is your circulating fan working?
Sometimes they stick and need a shot of WD 40 and then work
it back and forth a little until it wants to take off again. Keep me informed
and PLEASE give a Thumbs Up for the effort. The Raz Shack

have you checked the door seals, if it has split it won`t freeze 100% as warm air will get in and keep the temperature up, bit like leaving the door slowly open hth

check door seal fit tightly.if its frost free make sure drain is clear at the bottom of evaporater if all ok check defrost heater and sensors..

Check rear wall of freezer by feel for frost. Heavy, even frost indicates likely problem in the defrost system. Unplug unit. Defrost heater (in freezer behind rear wall panel), defrost thermostat (same area-must be checked at freezer temperature) or Defrost timer-located lower back outside of unit. Near compressor. Do continuity test on heater and defrost thermostat and if they show continuity (good), replace defrost timer. If not, replace the one that tests bad.

Defrost coils fully. Reassemble.

Please let me know if I have helped with comments and rating.

Refrigerator will work about 7-10 days after being defrosted until thick frost builds up again cutting off air flow to both compartments

If its freezing at the back that indicates refrigeration is good. it sounds like you have a thermostat control problem. Replace the thermostat.

Defrost timers usually cause this type of frost build up. However it can also be caused by the defrost heater and/or heater thermostat, and these items are behind the panels therefore not easy to get to. Also before you attempt to take the panels apart make sure the refrigerator is unplugged.

check that the correct thermostat is installed and that the element wire is connected.check door rubber and door hinges.check if it has independant defrost timmers and if it is working.oh and see if the element is drawing current if fitted with one.