Air Conditioner

Model # FFMS121CQ10 Official Frigidaire room air conditioner

Here are the diagrams and repair parts for Official Frigidaire FFMS121CQ10 room air conditioner, as well as links to manuals and error code tables, if available.

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Browse Parts for
FFMS121CQ10 Room Air Conditioner
Frigidaire Control Box 5304505959
#9

Recommended spare parts diagram

Frigidaire control box

Part #5304505959

In Stock
Sensor 5304505948
#37

Recommended spare parts diagram

Sensor

Part #5304505948

In Stock
Frigidaire Valve Assembly 5304505971
#26

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Frigidaire valve assembly

Part #5304505971

In Stock
Sensor 5304505947
#35

Recommended spare parts diagram

Sensor

Part #5304505947

In Stock
Frigidaire Bracket 5304505954
#2

Recommended spare parts diagram

Frigidaire bracket

Part #5304505954

In Stock
Frigidaire Base 5304505958
#8

Recommended spare parts diagram

Frigidaire base

Part #5304505958

In Stock
Frigidaire Motor 5304505965
#19

Recommended spare parts diagram

Frigidaire motor

Part #5304505965

In Stock
Frigidaire Bulkhead 5304505957
#6

Recommended spare parts diagram

Frigidaire bulkhead

Part #5304505957

In Stock
Reactor 5304505939
#23

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Reactor

Part #5304505939

In Stock
Panel 5304505975
#32

Recommended spare parts diagram

Panel

Part #5304505975

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

Most common symptoms to help you fix your heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

Thermostat problem, clogged air filter, burner failure…

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

Most common repair guides to help fix your heating & cooling combined units

These step-by-step repair guides will help you safely fix what’s broken on your HVAC system.

How to unclog the air conditioner drain line

How to unclog the air conditioner drain line

The condensate drain line for your central air conditioner can clog with mold and mildew. Water will back up and start d…

Repair difficulty
Time required
 15 minutes or less
How to replace the furnace flame sensor

How to replace the furnace flame sensor

The flame sensor detects when furnace burner flames are lit. You may need to replace the flame sensor if flames only sta…

Repair difficulty
Time required
 15 minutes or less
How to replace a heating and air conditioning system thermostat

How to replace a heating and air conditioning system thermostat

The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it.…

Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your heating & cooling combined units

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

Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…