MRS20HNGW1 Frigidaire Refrigerator - Instructions

I order defrost timer then replaced it but it seemed doesn't work. I order defrost thermostat again then it worked fine until now. Thanks. Part selects.

Unplug the refrigerator. Removed the right hand top shelf. Used a 1/4" nutdriver to remove rear center mounting screw for Control Housing. Used Phillips screwdriver to remove two mounting screws for timer. Unplug cable from timer and plug it into the new timer. Install the new timer and re-install the Control Housing. Plug in the refrigerator and adjust the timer to start the unit. This was a snap with the diagnostic provided by Part Select. At first I thought it was the fan rubbing but when I removed the cover (two screws) it was obvious that wasn't the problem. The diagnostic hinted that it was either the timer or the motor capacitor making the noise. Because the noise continued after turning OFF the control, I thought it was the timer...I was right.

1. Disconnected electrical. 2. Removed upper console in refrigerator by removing 2 nuts. 3. Disconnected wiring from console. 4. Removed 2 screws from defroster timer part and pulled off from connector. 5. Replaced with new defroster timer and put everything back together. Thank you Steve for the U-Tube step by step video.

I watched the video online where it described the troubleshooting tips for this type of symptom. So I knew exactly what the problem was which is the defrost timer. After the part came in I just unscrewed (4 screws) the box which houses the thermostat and the defrost timer from top ceiling of the refrigerator section. Then I just unscrewed and unhooked the old defrost timer and replaced it with the new one. After finishing the installation I turned the fridge on. At first nothing happened. So I turned the dial on the defrost timer with a flathead screw until it clicked and the fridge came alive. I waited for an hour or so. The cooling cycle completed and the fridge stopped as expected. When I opened the door I noticed the interior is much colder than before and right after closing the door the fridge hummed back into life again. So I know my fridge is working again. Thanks to PartSelect for providing the right part for my refrigerator. I will definitely buy from them again if anything goes wrong.

Simply replaced the defrost timer located inside the frig just behind the temp dial. Very easy job. Removed the 3 screws holding the temp sw and light assembly. Removed the defrost timer w/ 2 screws and put i all back together. 15 mins at most. Suggest you watch the install video for pointers.

Unplug the refrigerator unit from wall. I removed freezer rack, plastic light cover, the ice rack shelf on the right side, then removed the plastic back cover panel, (4) retaining screws, gently tilting the panel toward me, unplug the wiring harness by depressing the clips on the side of the plug, removed panel from unit, set aside. If the unit was froze up, so I defrosted the cooling coils carefully with a common hair dryer until it was thawed. Be careful not to touch or bend the coils , since they are very fragile and SHARP! I located the old thermostat unit attached to a straight length of coolant line. The new unit looked like the old one, so it was easy to locate. I cut the two wires of the old unit close to the round base to make sure I would have enough wire to reconnect. Since my new unit did not indicate a polarity(Neg or Pos), I just wired each wire I cut to one of the new unit. I used the shrink tubing provided and heated the shrink till it was fully melted. I double ck'd to see if the wires were basically waterproof and a good connect. Also, before I replaced the rear panel, I made sure that both wires I had spliced had a drip loop to it so water would not drip down into the newly spliced union. Also made sure the wires will not interfere with the colling fan on the back of the rear panel. Reverse the procedure in reassembling. Plug in unit, and wait and listen for the unit coming back on..I kept a regular thermometer in the upper and lower compartments. Allow 24 hrs. for the unit to return to normal operation. It may defrost several times till the whole operation is back in sync.

Turned off Refrigerator by thermostat switch in Freezer Compartment,(allowing for light to work in freezer). Then removed all food from freezer side,then all shelves & basket drawer. Next, unplugged refrigerator from electrical source. Removed back of inside of the freezer. Located the Thermostat for defrosting cooling coil. Removed and replaced with new part.(Tip-unplugged the wires for the original thermostat, remove from freezer and cut off and splice with connectors provided with new part, it's easier because you're not trying to do this in the narrow space of the freezer). Then attach the thermostat with new bracket and plug thermostat wires back in, replace back panel, shelves, plug in power supply, turn thermostat switch in Freezer to normal setting. Wait for Freezer to cool and replace food. It's currently working like new. BTW I thought I need a defrost time as well...however after I ordered that part and received it, I turned the existing defroster timer manually with a straight ended screwdriver very slowly and it cycled and the defrost rods glowed/functioned just fine. Therefore I didn't replace defrost timer. I'll save the new timer for future repair if needed. All in all it was fairly easy, and I didn't have to buy another fridge. I was really pleased with the service of this website...and the parts arrived very quickly via Fedex. Thanks www.partselect.com ! KJ

1. Unplug the refrigerator.2. Remove the storage rack and back panel in the freezer. 3. Locate the thermostat. 4. Defrost the freezer coils , i used a hair dryer. 5. Remove the thermostat from the cooling coil and then clip the connecting wires close to the unit. 6. Strip the ends of these wires and connect these wires to the wires of the replacement unit using the supplied wire connectors. 6. Heat seal with a lighter the connections using the water shield sleeves provided and further wrap connections with electrical tape. 7. Reconnect the thermostat to the cooling coil at the location it was removed from. 8. Replace the freezer back panel removed earlierand the storage rack if you have one. 9. Plug the freezer back in. My refrigerator has been working ever since the repair. There are several YouTube videos available that walk you through the diagnoses and repair process. They are very good.

According to the information from the parts select website the thermostat and the defrost timer where ranked number 1&2 as likely to fail and cause the condition experienced. To replace the Defrost thermostat just remove the freezer bins and the lower panel covering the evaporator. Remove the old thermostat, measure the wire lengths and install the provided crimp splices. Note: the heat shrink tubing is WAY over-sized and will not shrink to the size needed. You will need another means of sealing the wire connection. Install the thermostat and replace the panel and shelves. The timer is real easy. On my model it is located under the freezer door under the kick panel on the front. Simply remove 2 Phillips head screws, unplug the old unit and install the new one. Be sure to cycle the thermostat past the defrost cycle on the timer (rotate until an audible click is heard once for the beginning of the cycle and one at the end) so that the unit will start up when power is reconnected. This resolved my problem and the unit is working great!

bottom left cornerof fridge defrost timer replaced two bolts and a wire

we removed the food from the freezer, disconnected the fridge , removed the cover, the evaporater fan was running, condeser fan was running, then we checked heater with multimeter and it was ok. next step we replaced the frostimer, and defrost thermostat . and then the refrigarater was working ok, problm was the frost thermastat damaged.

I watched the video you had on-line and it was simple. Thank you so much

After reading other posts, I decided to change the defrost thermostat, so I watched the videos, and did that. It got better, but the problem persisted, and the ice was still building up in the freezer section. So I decided that the problem was with the defrost heater. I ordered a new one, that was here under 24hs (using the Fedex ground). I replaced it, measured the old one and saw that it was not passing any current at all (so it was really burnt). Now the fridge is good as new, maintaining the proper temperatures both at Freezer and Fridge sections. Thank you Parts Select ! With $ 70 in parts I was able to get back my appliance working !!!

Purchased switch and socket, not sure which had failed. Moved all frozen food to refrigerator, turned off breaker. Used nutdriver to remove two screws holding box containing switch and socket. Removed old switch and socket. Removal was slightly difficult since cabling came off both sides of the box. Installed new switch and socket and bulb. Turned breaker back on, checked light as workiing. Replaced scrrews to re-intstall switch box ( or whatever you call it ) Closed door and waited for freezer to cool. Returned all frozen food to freezer. Job Done

Part Select suggested probable causes and supplied videos of how to make the repair of a 25 yr.old refrigerator along with the specific parts to order. I was about to trash the old refrigerator but after replacing the parts for a total of about $40 and 1 hour of time it works fine now.