During typically the defrost cycle within a LG refrigerator model LFX21976ST, the particular defrost sensor explains to the main handle board the temp inside freezer. If the sensor is definitely defective, the defrost cycle may quit functioning, which eventually causes the evaporator in the fridge to ice upward and the temp within the fresh foods compartment to enhance. In the event that your appliance is showing symptoms regarding a faulty defrost sensor, don` capital t worry, the step-by-step guide provided under will help a person replace the malfunctioning part. HOW TO REPLACE TYPICALLY THE DEFROST SENSOR IN A LG FREEZER Before starting any kind of type of maintenance, unplug your product. If you may` t move your appliance to succeed in the outlet, turn the electricity running to it off with the circuit breaker. Always wear job gloves and basic safety goggles to shield the hands and sight from injury. Start the repair by opening the refrigerator door and removing the lower iced food bin. Lift the rear of the bin up to relieve the locking tab. With the rear angled up, take the front end in the bin away of the fridge. Now remove the door assembly through the freezer track. Locate the 2 screws on the aspect with the rails which hold the assembly and even rails together. Get the screws outside with a Phillips screwdriver. Once each screws are eliminated, lift up in the door assembly in order to disengage the four locking tabs, in addition to then pull the particular door and framework off the bed rails make it throughout a safe place. Push the side rails back into typically the freezer, and pull the upper basket out. Depress the two tabs on the particular front of the basket to produce it from the bed rails. Angle the entrance of the bag up before working out with the entire assemblage out of the freezer. Drive the rails again into the inner compartment. With the shelves out of typically the way, it will be time to remove the rails. Using a new Phillips screwdriver, acquire out the screws from the top rail, first. Following your screws are taken off, pull the railroad off the deep freeze wall. Repeat the particular same process in the other section. Now will leave your site and go to typically the bottom rails. Begin by pulling the track out of the compartment to gain access to the connecting rod inside of the back of which links the left and right rail. To detach the rod, relieve the locking case situated between the particular gear wheel plus the mounting dish. Once you have the first side away from, simply pull typically the other side out of the opposite gear tyre. Push the rails back in, and use a Phillips screwdriver to remove the bed rails from your freezer walls. Using the rails out of the way, you can earn out the particular freezer? s back panel. First, along with a putty blade, open up the small rectangular entry cover positioned in the upper right hands corner. Insert the putty knife to the small gap in the middle the cover and rear panel to disengage the securing tabs keeping all of them connected. Take outside the small access cover and set it apart. To remove the back panel, reach directly into the opening a person created and locate the locking tabs connecting the rear panel to the fridge compartment. Once that will tab is unveiled you can start off embodying the the panel. When all typically the tabs are disengaged, lower the screen down to the freezer floor, plus disconnect the a couple of wire harnesses backlinking the rear panel to the back wall. Now you can pull the rear section out of typically the freezer. You have got finally gained entry to the defrost sensor, which is definitely located near typically the top right side of the evaporator. It is essential to be added careful while taking the sensor out. Destroying the evaporator shelves or fins can lead to a Freon leak, which can just be fixed by simply a professional. To begin the elimination process, cut off the three zip connections holding the defrost sensor in place. Once all the particular zip ties are gone, you will take the defrost sensor out by first extracting typically the thermistor at the particular bottom then drawing out the merge from the top rated. When those two sections are free of cost, you can disconnect the wire use from the rear wall of typically the freezer. Then thoroughly take the defrost sensor out involving the freezer compartment. Before installing typically the new defrost sensor, guide the higher zip tie via the hole in the evaporator, so you can secure the fühler once you include it connected. At this point run the defrost sensor wire control behind the copper mineral line and plug it into the freezer` s back walls. https://fixthingz-appliance-repair.com along the side of the evaporator. As soon as the sensor will be in place, secure it with zero ties towards the top, centre and bottom. Make sure to lean the zip ties once you have tightened these people. It`s period to begin reassembling your freezer inner compartment. Plug the two line harnesses attached with the particular rear panel in to the freezer`s back again wall, and reinsert the panel by snapping it into place. Now buy the small rectangular access cover. Reattach the bottom two bed rails on each of your side involving the compartment. Right after you have guaranteed associated with the screws you took out earlier, you could move on to the very best two rails. When you are finished along with all four rails, slide the underside rail out of the freezer plus reattach the connector rod. Finally, you may put the freezer door back upon. To do, line way up the tabs within the door track to the gaps within the freezer side rails, and lower typically the door assembly down until it photos into place. After the door is within place, perform a quick test simply by pushing the doorway inside and out to ensure it opens and closes appropriately. If it will, you can set the screws inside of that holds the doorway to the track. To finish your repair, pull out the top rated rails and place the freezer container and then push the basket back into the compartment before reinstalling the underside bin. Now that the refrigerator is reassembled, plug it back in and enjoy your properly functioning appliance. If your newly installed defrost sensor did not really correct your fridge` s problem, make sure you contact us nowadays to schedule a good appoint with single of our highly qualified appliance restoration technicians.