MRT21PNAD0 Frigidaire Refrigerator - Instructions

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.

The old drain pan had a 1 ½” tall bushing attached to the center of the pan. The new pan did not have this bushing which was great. I had to cut about 1 inch off the bushing to remove the old pan. Also after cutting the bushing I had to screw the bushing off after cutting the old pan from the bushing. I installed new pan onto the ½” of threads that was left on the top of the compressor. Checked repair two days later all was great.

Unplug the refrigerator. You will ultimately need to remove the back panel of the freezer. But first, you will need to unscrew 2 screws on a small vertical fan vent and unscrew two screws on the fan. Maneuver the fan out of the round hole in the back panel and unplug the 3 prong wire connection. Then remove the fan. Unscrew the 4 remaining visible screwson the back pannel and remove the panel. This will expose the freon coils. On this model, the heater has two connections at the top of the coils. Unplug those wire connections. The heater extends down each side of the coils and along the bottom of the coils. Unhook two aluminum ties that connect the heater element to the coils. These ties stabilize the heater element and also prevents any current from flowing along the element because of the touching of two different metalic parts. Maneuver the heater element out of the coils. To install the new heater, reverse the above process beginning with installing the new heater element. If it hasn't already been done, it is good idea to test the old heater element with an ohm meter to make sure that the element is actually bad. The circuit should be open. This is the second heater element that I had to replace on this refrigerator, and it was actually burned in half both times, so I knew for sure the element was bad. Then test the new element to make sure it is good, and start the installation..

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!

One of the three top comments from other replys had similar problems, so I took their advice, since the prices were resonable, I went and replaced two parts instead of just the defrost timer. If I had to do it a second time I could probably do it all in about 20 mins.

dismantled the top rear panel of the freezer and found I had the wrong part. Hand started the fan motor and it has been working fine since.

1 went with maj 69% said defrost timer. NO. 2 went with second choice run cap NO. 3 went with my thought, ( PTC Starter ) why not, most exp part. Fixed the problem.

Emptied freezer, removed fan motor cover (2 screws), removed fan and motor (2 screws), removed old motor from bracket and reassembled with new motor, transferred fan blade from old motor to new), re-installed new fan/motor (2 screws) and reinstalled cover...

there were three possible problems the timer, the thermostat, or the heating element.i replaced the timer first as that is the problem 65% of the time and that did not fix the problem, i replaced the thermostat and that did fix the problem. after watching the video on line from parts select i took the back off of the freezer from the inside, defrosted the coils with a hair blower and then swapped out the thermostat which pops right off and i spliced the old connectors to the new thermostat. the heat shrink tubing that came with the part was a little to big so i put a smaller peice on each side for water proofing. that is what the cigarette lighter is for to supply heat to the heat shrink tubing.now that i have fixed that problem i may tackle the ice maker next

Removed the lower trim panel from front of fridg. and loosened two screws enough to turn it about 1/4 inch so the screw heads were in the larger holes. Pulled it out disconnected the wire connector and transfered the heat shield and screws to the new clock, connected the wire connector and aligned the screws. tightened them and job done. Has worked like new sense. Thanks Roger

first I replaced the timer control hoping thats the problem,unfortunately situation the same ice build up on the freezer.so I replaced the defrost thermostat.right now I'll still observing the condition if still the same.may be in couple days.so far its good.and to replace the parts is not difficult and easy.

Removed screws that fastened bracket to fridge. Next, I replaced the motor and carefully lined the brackets up so the motor would rotate smoothly. Put the fan blade on the motor and screwed the brackets back on the fridge. Motor kept popping out of alignment while I was screwing the brackets back in but I kept snapping it back in till it stayed.

Followed instruction vedeo from partselect. THANKS!!!!!

pulled out freezer, went to floor,reached in next to compressor pulled off clip just like on the video.Pulled off old capacitator took off wire leads.Installed new one. Freezer runs great.Loaded it up with beef pork and venison. No problems.

Took off the old crisper drawer cover supports with the screw driver and put the new ones with the screw driver and small hammer (really easy)thank you to your installation instructions video.