MRT21NSHD3 Uni Refrigerator - Instructions

I removed the housing at the top of the refrigerator compartment that contained the reefer light and temperature adjustment knob. This required a small nut-driver. Inside, I found the old defrost control, unplugged it, unscrewed it with a Phillips screwdriver, and replaced it with the replacement part. Then I replaced the housing to its original position.

Removed the housing with the light, 4 hexhead screws. This exposed the defrost timer, removed 2 hexhead screws, electrical connector and reassembled the unit.

Great resource and service, thank you.

Removed shelves ,removed panel on interior back wall with Philips screwdriver ,unplugged wire terminals slid thermostat off coil ,then reversed process to complete installation.

Checked for continuity in heater, defrost thermostat and defrost timer. Heater good; not sure about thermostat or timer. Replaced thermostat - no change. Replaced timer - rotating and heater working.

a handyman made the repair. It went fine.

Our old gasket was shot to hell, so we figured we'd replace it to see if that would solve the problem. We followed the instructions of another customer. We realized it was better if we removed the entire door in order to attach the gasket. That took a little doing, but it was totally the way to go. Miracle of Miracles, the leaking has stopped, the food is super cold, and I couldn't be happier.

I removed the plastic shroud on the ceiling of the refigerator, unscrewed and unplugged the old defrost timer, and replaced it with the new one. I reinstalled the shroud with the new timer installed.

Followed someone before me instructions. very simple and easy

I damaged the timer while moving the fridge and did not realize it and it took 10 minutes to change out. "note" don't panic when it don't come immediately there is a dial in the front of the timer you can turn with a flat head screwdriver that will activate the timer

The defrost timer is faily easy to replace, first unplug the unit, then remove the toe gaurd, then lay on the floor with your light and phillips screwdriver, locate the 2 screws at the lower left side, remove them and the timer and it's shield will drop down. unplug the old timer, plug the new one in and re-install everything. The temp sensor is located in the back of the freezer compartment. Again make sure the unit is unplugged, remove freezer shelves and lower basket, then with a 1/4" nut driver, remove the screws holding the rear panel on, remove the panel and locate the sensor on the upper evaporator tube, unclip it and disconnect the 2 wires, reverse procedure and plug it back in. Not to get on a soap box, but this is the 3rd time i have had the same problem with this unit, plus several other problems.

Removed the back panel of the freezer. Unplugged the defrost cycle thermostat and replace with a new one.
Removed the bottom cover in front of the refrer. removed the defrost timer, plugged new timer in. manually tripped the defrost timer. checked the defrost heater for operation. Checked OK, replaced covers, works like a champ

Ordered the Capacitor and the Thermostat Control. Parts were received in a matter of a few days, easy to install, but did not fix the problem. Had to call a repairman to fix the problem (compressor relay - this part not available to order for this model number with Parts Select). Will continue to use Parts Select in the future for other parts, but not happy that the actual part I needed was not available - had to use other methods.

Remove front cover below door, remove 2 screws attaching the defrost timer to the refrigerator frame.
Unplug wiring harness plug from timer an install new one.
Remove metal cover in back of the freezer compartment. unpug the two wires going to the thermostat, remove the thermostat { thermostat is held onto the cooling coil with a clip} , remove thermostat and replace with new one

Took old defrost pan off, put new one on. Had to bend new defrost pan a little for it to fit..

removed the screws/nuts; pulled the back panel off, removed the old thermostat (wires just popped apart) replaced the new thermostat (wires just popped back on) replaced the back panel and the nuts and TaDa!!