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My freezer is not freezing and gets frost buildup on the back wall where the coils are located. It also get a block of buildup on the coils where the thermostat is located. I replaced the thermostat and run capacitor two days ago and it is getting the frost build up again as well as still not freezing properly. I know the fan blades on the condenser coils turn easily because I checked when I cleaned the coils (located on outside under the freezer section). Sometimes the temperature display for freezer will flash 1 then H back and forth. I turn the temperature gauge off then back on when that happens. We get a lot of power surges and short power outages here. What else it the problem be?
Hi @dawndrr , Check if the defrost heater - part #14 system is OK. Scroll down the diagrams on the left side of the page to find the System parts diagram. Click on it to get a view of the system parts and their location Disconnect the power from the fridge and then remove the rear panel inside the freezer compartment to reveal the evaporator unit and fan. The defrost heater is located under the evaporator unit. Disconnect the wires from the heater and then use an Ohmmeter to measure the heater’s resistance. it should measure ~20-30 Ohms. The heater helps to melt the ice build up on the evaporator unit during the defrost cycle. If the heater is faulty then some of the ice doesn’t melt and it continues to build up every time after a defrost cycle instead of being melted away, until the evaporator fan is iced up and can cause it to stop running and cooling things down. If the heater is OK, check whether the refrigerator compressor stops running about once every 6-12 hours for at least 15-20 minutes. It does this because the refrigerator is in the defrost cycle which is when the ice is defrosted off the evaporator unit (inside the freezer compartment) and allowed to flow to the evaporator pan under the refrigerator to evaporate away. Unfortunately I don’t know how to force the fridge into the defrost mode so that it can be tested more quickly. If it doesn’t go into the defrost cycle it may be the control board
