Universal/Multiflex (Frigidaire)
Upright Freezer

Model #MFU21M3BW4 Official Universal/Multiflex (Frigidaire) upright freezer - 5995282877

Here are the diagrams and repair parts for Universal/Multiflex (Frigidaire) MFU21M3BW4 upright freezer - 5995282877, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Error Codes
?
This is the number corresponding to the part on the diagram / schematic

Showing 10 of 82 parts

Freezer Door Key (replaces 216702900, 7297147700)#5

Door Diagram

Key

Part #216388700
Replaced by #297147700
?
Manufacturer substitution
This part replaces 216388700. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$6.16 | 
14% OFF 
Phone Price: $7.16
Refrigerator Run Capacitor (replaces 216985003, 218909913, 75304464438)#55

System Diagram

Capacitor

Part #216236200
Replaced by #5304464438
?
Manufacturer substitution
This part replaces 216236200. Substitute parts can look different from the original.
BEST SELLER
In Stock
$47.60 | 
10% OFF 
Phone Price: $52.60
Freezer Door Gasket (replaces 3206262, 3206264, 3206265, 5300129798, F000125008, F0112642-4, F0122543-5, F112642-4, F122543-5, F125008, F126005, F129798, R000901073)#1

Door Diagram

Freezer door gasket (replaces 3206262, 3206264, 3206265, 5300129798, f000125008, f0112642-4, f0122543-5, f112642-4, f122543-5, f125008, f126005, f129798, r000901073)

Part #3206261
BEST SELLER
In Stock
$172.84 | 
5% OFF 
Phone Price: $182.84
Refrigerator Filter Dryer#4

System Diagram

Filter drier

Part #216099900
Replaced by #5303305677
?
Manufacturer substitution
This part replaces 216099900. Substitute parts can look different from the original.
BEST SELLER
In Stock
$11.44 | 
30% OFF 
MSRP: $16.34
Freezer Shelf Support (replaces 3091418)#6

System Diagram

Support

Part #3091418
Replaced by #297001600
?
Manufacturer substitution
This part replaces 3091418. Substitute parts can look different from the original.
This item is not returnable
In Stock
$18.32 | 
10% OFF 
Phone Price: $20.32
Appliance Touch-Up Paint, 0.6-oz (White)

#NI

All parts Diagram

Touch paint

Part #5303305324
Replaced by #5303321319
?
Manufacturer substitution
This part replaces 5303305324. Substitute parts can look different from the original.
This item is not returnable
In Stock
$15.09 | 
12% OFF 
Phone Price: $17.09
Freezer Shelf Support (replaces 08037928)#7

System Diagram

Support

Part #08037928
Replaced by #297001500
?
Manufacturer substitution
This part replaces 08037928. Substitute parts can look different from the original.
This item is not returnable
In Stock
$18.32 | 
10% OFF 
Phone Price: $20.32
Freezer Inner Door Panel Rivet#27

Door Diagram

Freezer inner door panel rivet

Part #5303212828
In Stock
$19.49 | 
9% OFF 
Phone Price: $21.49
Freezer Screw#93

Door Diagram

Screw

Part #5303161215
Replaced by #216858001
?
Manufacturer substitution
This part replaces 5303161215. Substitute parts can look different from the original.
In Stock
$11.09 | 
15% OFF 
Phone Price: $13.09
Freezer Temperature Control Thermostat Tube Bracket (replaces 05878562, 08037931)#22

Cabinet/control/shelves Diagram

Clamp

Part #08037931
Replaced by #216823500
?
Manufacturer substitution
This part replaces 08037931. Substitute parts can look different from the original.
In Stock
$17.97 | 
10% OFF 
Phone Price: $19.97

Symptoms common to all freestanding freezers

Choose a symptom to see related freezer repairs.

April 20, 2023

Why is my refrigerator so noisy?

By Lyle Weischwill
Main causes: leaky door or lid gasket, broken defrost heater, bad defrost bi-metal thermostat, defrost control failure, faulty compressor
Read more
April 20, 2023

What should I do when my freezer's high-temperature alarm sounds?

By Lyle Weischwill
Main causes: lack of power, bad compressor, refrigerant leak, bad thermistor, defrost system failure, dirty condenser coils, control failure
Read more
April 20, 2023

Why don't the lights in my freezer work?

By Lyle Weischwill
Main causes: burned out light bulb, bad door or lid switch, faulty LED light board, wiring failure, control system failure
Read more
April 19, 2023

Why is my freezer too warm?

By Lyle Weischwill
Main causes: excessive frost, bad defrost heater, bad defrost bi-metal, control system failure, low refrigerant charge, compressor problems
Read more
April 19, 2023

Why does my freezer have a lot of frost inside?

By Lyle Weischwill
Main causes: damaged door or lid gasket, cracked cabinet liner, bad defrost bi-metal thermostat, broken defrost heater, bad defrost timer
Read more
April 19, 2023

Why isn't my freezer cooling?

By Lyle Weischwill
Main causes: compressor failure, no refrigerant, faulty sensor, control failure, broken defrost heater, bad defrost bi-metal thermostat
Read more
April 19, 2023

Why isn't my freezer running?

By Lyle Weischwill
Main causes: lack of power, control system failure, broken compressor start relay, locked up compressor, compressor motor failure
Read more
April 19, 2023

Why is my freezer hot on the outside?

By Lyle Weischwill
Main causes: dirty condenser coils, condenser fan failure, dirty bottom front grill, leaky door or lid gasket
Read more

Repair guides for upright freezers

February 20, 2015

How to replace a freezer control panel

By Lyle Weischwill
How to replace a freezer control panel

A freezer control panel that doesn’t show the temperature or respond when you press the buttons could be broken. This DIY repair guide and video show how to replace a freezer control panel in less than 15 minutes.

Repair difficulty
Time required
 15 minutes or less
February 20, 2015

How to replace a freezer door switch

By Lyle Weischwill
How to replace a freezer door switch

When the door switch fails, the freezer can’t detect that the door is closed. Follow the steps in this repair guide to replace a defective freezer door switch.

Repair difficulty
Time required
 15 minutes or less
February 20, 2015

How to replace a freezer thermistor

By Lyle Weischwill
How to replace a freezer thermistor

When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follow these step-by-step instructions to replace a defective freezer thermistor.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all freestanding freezers

Use the advice and tips in these articles and videos to get the most out of your freezer.

August 19, 2022

Are DIY appliance repairs safe?

By Lyle Weischwill
Are DIY appliance repairs safe?

Find out how to stay safe when repairing your appliances.

Read more
August 17, 2021

How to read a wiring schematic video

By Lyle Weischwill
How to read a wiring schematic video

Learn how to decipher symbols so you can buy the right part for your problem.

Read more
December 15, 2014

5 tips for finding food in the freezer faster

By Kim Hillegass
5 tips for finding food in the freezer faster

Don't get chapped hands digging through the icy depths. Get organized! Here's how.

Read more

Parts & More