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Your defrost heaters are not working. The unit takes a week to freeze up and presto - poor cooling. Melt the ice and it works fine again till it freezes up again. Did you check out the defrost timer? Make sure that the defrost elements are not open.
Defrost cycles in normal conditions can last from five (5) to 25 (25) minutes, depending on variables like humidity, runs times and how often the door is opened. Defrosting the unit manually as you've done is merely a short term solution as it recurs again over time. You should find out why it is not working automatically, as intended. This could be a problem with poor air flow (fan, blower or restricted air), a bad control, or even loose connections. Forcing defrost without correcting the underlying issue will not eliminate the problem.
Unplug the refrigerator to manually defrost. You need to test the defrost parts to see if one or more are faulty.
There is a simple more accurate way to dx than forcing a defrost by advancing the timer/ADC.>>>Refrigerator Defrost Parts
You almost certainly have a defrost issue with this unit. Your best bet with a Samsung is to call a qualified service tech to complete your repair. If you want to try it yourself here is what you would need to do to test this unit. If your unit is not defrosting it can not circulate the air and will cause the unit to warm up.
Unplug the unit and remove the back cover on the unit where the compressor is and you will see a white box on the right hand side. Remove the screws holding that box in and pull it out and open it up, that is your main pcb for this unit and all tests will be done from here.
Using a multimeter set to Ohms for measurements unplug the connector on CN70 (pnk, skyblu, org, wht, brn) and on the plug check for continuity from the white wire to the orange wire (Refrigerator Defrost Heater) and from the Brown wire to the orange wire (Freezer Defrost Heater) if either of those show open then that is your problem, replace the heater.
Plug CN70 back in and the plug the fridge back in. Using needle leads on your multimeter set to DC volts check for power on CN30 from Orange wire to the Brown wire (do not unplug the CN30 connector) your voltage should be from 2.3v - 4.2vdc (freezer defrost sensor). Also check the purple to the brown wire 2v - 4.2vdp (Refrigerator defrost sensor). If you are outside of that then you would need to replace that sensor.
If the above steps check good then you will need to put the unit into defrost and check for power at the heater. To put the unit into defrost, from the user interface panel on the front of the unit press the power freeze and power cool buttons simultaneously for 8-12 seconds until the display quits blinking. Press the the freezer button 3 times (wait 5 seconds between button pushes) to force the unit into defrost.
Go back to the main pcb and using your multimeter set to VAC check for power at White and Orange (refrigerator defrost heater) should be 110-120vac. Also check from brown and orange (freezer defrost heater) should be 110-120vac. If you do not have power then you have a bad main pcb.
defrost issue , not sure on how to jump the board to force defrost but more than likely the defrost thermostat is bad . this is on the evap in freezer . the noise come from frost building up around the evap fan
Hi from retired Englishman in SW France, Friday afternoon 14:54
You have posted your 'how to defrost (steps) chicken in samsung c103fl' on the washing machine forum- I doubt you would have got an answer and your chicken has probably defrosted by now anyway ;-0)
You would have needed to re-post onto the appropriate forum but in any case why not try and obtain a user guide from the web for the future?
Type into your search engine/web browser ' samsung microwave user guide' and, with a bit of luck, you should be presented with sources from which you can download for free!
Good luck and sorry, I'm no cook- ask my wife!
You should be able to move it gently to the lower position. If it doesn't want to move don't force it. Try shutting the ice maker off in case the arm is frozen in the up position. After the ice maker defrosts a bit try again to move the arm gently.
the issue is not with the motor to be honest you have probably wasted money buy a new fan motor ,
the fan only stops working when ice builds up and forces it to jam , the ice builds up as the defrost heater is more than likely faulty - very common issue on all uk samsung rs21 models ,
to rectify the fault totally its recommended to replace 4-5 components that operate the fridge cooling /defrosting system - sounds complicated but its really just 1-2 hour job for a skilled competent person
have a look at this video , also check the youtube chanel for same guy , there are lots of info on samsung uk american fridge freezers