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Universal/Multiflex (Frigidaire)
Upright Freezer

Model # MFU20F3BW3 Official Universal/Multiflex (Frigidaire) upright freezer

Here are the diagrams and repair parts for Official Universal/Multiflex (Frigidaire) MFU20F3BW3 upright freezer, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 81 parts  |
Freezer Door Shelf Rail End Cap, Left 216334100
#30

Door diagram

Freezer door shelf rail end cap, left

Part #216334100

This item is not returnable
$24.19 | 
20% OFF Phone Price : $30.19
In Stock
Refrigerator Evaporator Cover Screw 08037851
Refrigerator evaporator cover screw

Part #08037851

This item is not returnable
$3.51
In Stock
Strap 06594651
#36

Cabinet/control/shelves diagram

Strap

Part #06594651

This item is not returnable
$2.29
In Stock
Freezer Door Shelf Rail End Cap, Right 216334000
#29

Door diagram

Freezer door shelf rail end cap, right

Part #216334000

$38.11 | 
14% OFF Phone Price : $44.11
In Stock
Refrigerator Thermostat Sensor Barrier 5303916855
#22

Cabinet/control/shelves diagram

Refrigerator thermostat sensor barrier

Part #5303916855

$47.89 | 
11% OFF Phone Price : $53.89
In Stock
Freezer Breather Valve 5309950074
#32

Door diagram

Freezer breather valve

Part #5309950074

This item is not returnable
$12.29 | 
14% OFF Phone Price : $14.29
In Stock
Lock Catch 216013600
#1

Cabinet/control/shelves diagram

Lock catch

Part #216013600

The manufacturer no longer makes this part, and there's no substitute part

Bearing 5303210403
#22

Door diagram

Bearing

Part #5303210403

The manufacturer no longer makes this part, and there's no substitute part

Sleeve 5303207297

#NI

All parts diagram

Sleeve

Part #5303207297

The manufacturer no longer makes this part, and there's no substitute part

Freezer Breaker Trim Clip 06594680

#NI

All parts diagram

Freezer breaker trim clip

Part #06594680

The manufacturer no longer makes this part, and there's no substitute part

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

Main causes: lack of power, bad compressor, refrigerant leak, bad thermistor, defrost system failure, dirty condenser co…

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Why don't the lights in my freezer work?

Main causes: burned out light bulb, bad door or lid switch, faulty LED light board, wiring failure, control system failu…

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Why isn't my freezer cooling?

Main causes: compressor failure, no refrigerant, faulty sensor, control failure, broken defrost heater, bad defrost bi-m…

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Why does my freezer have a lot of frost inside?

Main causes: damaged door or lid gasket, cracked cabinet liner, bad defrost bi-metal thermostat, broken defrost heater, …

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Why is my freezer hot on the outside?

Main causes: dirty condenser coils, condenser fan failure, dirty bottom front grill, leaky door or lid gasket…

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Why is my freezer too warm?

Main causes: excessive frost, bad defrost heater, bad defrost bi-metal, control system failure, low refrigerant charge, …

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Why isn't my freezer running?

Main causes: lack of power, control system failure, broken compressor start relay, locked up compressor, compressor moto…

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Why is my freezer so noisy?

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Repair guides for upright freezers

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How to replace a freezer door switch

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 r…

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Repair difficulty
Time required
 15 minutes or less
How to replace a freezer thermistor

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. Follo…

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Repair difficulty
Time required
 45 minutes or less
How to replace a freezer evaporator fan

How to replace a freezer evaporator fan

Air won’t circulate to cool the freezer properly when the evaporator fan fails. Follow these step-by-step instructions t…

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Repair difficulty
Time required
 45 minutes or less

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