MRT21NSHD3 Uni Refrigerator - Instructions

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.

After some troubleshooting to ensure the thermostat and heating element were working, determined that the defrost timer was the problem. With the defective part, I was able to manually advance the timer to activate the defrost cycle, but it wouldn't do so on its own. Unplugged the refrigerator from the wall. Timer is located in the refrigerator compartment at the very top. The compartment houses the cooling thermostat, the light bulb and the defrost timer. Using 1/4" nut driver, remove 4 screws holding compartment cover to top of fridge. Lower a bit to access electrical wiring. Wiring harness can be unplugged to work on the timer away from the fridge which makes it a bit easier. Timer is mounted with 2 phillips head screws. Remove screws and unplug timer from wiring. Install new timer, plug in wiring, secure with the phillips head screws and remount entire compartment.

I am a 65 year old woman with no mechanical aptitude: I just unplugged the frig. And used a screw driver to pry of the plastic socket from its outside edge. . Then you just unplug two tiny contact plugs that appear when you pull out the socket and replug in those two the same way on the new part. Pop the socket back into the hole . . . . And screw in the new bulb. I knew I needed the socket part cause when the bulb burned out , a new bulb still did not work. . . If I can do it, anyone can!

Removed bottom grill, removed two screws on left side and removed timer, unplugged it and plugged in new timer and reinstalled. Less than 10 mins. The Thermostat is in the freezer section behind the back panel. Removed all contents, removed shelving, removed 5 nut screws, and removed panel. Thermostat was clamped to top of coil assembly and was very easy to unplug and remove. New thermostat had a clamp built into it and was very easy to plug in and reinstall to the freezer coil. About 15 mins. This is an easy job for anyone who has any mechanical ability at all.

I remove the covering over the coil and defrost the solid frozen coil with luke warm water which took about 7 min. and replace the thermostat which I knew was bad.Wasn't sure about the timer,so I replace it too @ that price which took about 3 min.Put back and replace everything with clean-up,about another 10 min.

followed the video very esay

inspected visible refrigeration lines for evidence of leaking, found nothing substantial that would cause concern, ordered capacitor and defrost thermostat simply because both are inexpensive parts and theoretically either could be causing the problem. Both parts were very simple to install especially since I am a semi-retired refrigeration man.

Followed the sites instructions. Empty the bottom part of the freezer. Remove the screws. Move the panel out of the way. Easily remove the old part and replace with the new. Put the panel and screws back in place. The freezer works.

Watched video on Part Select which shows you how to replace the thermostat with several good pointers. Very easily done and now the freezer works great.

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

Replaced freezer defrost thermostat. Unit worked perfectly.

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

The instructions given to me by part Select were very good.I replaced the Timer- checked the heater with oham meter it was good- checked the door weather striping it was good and replaced the thermostat with new .So at this point I may need to call a professional unless some one has another solution.

Thermostat-Thawed freezer, took out drawers and loosened drawer track(back screw)to help remove back panel. Removed five screws from back panel with nut driver and slide panel up and out. Removed thermostat from coils. Two wire connectors pulled apart. Spring loaded connection on coil pulled off. Placed new part from partselect.(reversing sequence) Timer-Took two screws out from behind kickplate at bottom left of freezer. Pulled connector thermostat out of connector. Replaced with new timer. Turned plastic dial on timer until it clicked. Frig turned on, one week ago. Everything appears to be fine.If it doesn't freeze up in the next two weeks, I will start feeling real good.

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.