Hi I have a Samsung RSH1DTMH. The rear of the back panel ices up roughly monthly (I manually defrost) which makes the fan noisy. Your web-site suggests that this is either a stat or heater problem. It would appear to be an easy job to replace these parts or should I try one at a time ?
Test the parts with a meter first and then you will know which you need and save buying a heater or sensor you don’t need. Loads of YouTube vids to show you how and what readings you should get.