April 19, 2023

Frigidaire window air conditioner with heater error codes

Frigidaire

These error code explanations can help you diagnose a problem with your Frigidaire window air conditioner/heater. For repair how-to help, visit the PartsDirect repair help section, which includes repair help for window air conditioners, major appliances, lawn and garden equipment, garage door openers, vacuum cleaners and more. Search for your model number to find a complete list of replacement parts for your window air conditioner.

Error Code
Condition
DIY advice
ES

Evaporator temperature sensor failure

Check/Repair

Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the evaporator temperature sensor wire harness. Replace the evaporator temperature sensor if it's defective.

How-to help
Possible parts
Evaporator temperature sensor, Wire harness, Electronic control board
AS

Ambient temperature sensor failure

Check/Repair

Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the ambient temperature sensor wire harness. Replace the ambient temperature sensor if it's defective.

How-to help
Possible parts
Ambient temperature sensor, Wire harness, Electronic control board
HS

Air outlet temperature sensor failure

Check/Repair

Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the air outlet temperature sensor wire harness. Replace the air outlet temperature sensor if it's defective.

How-to help
Possible parts
Air outlet temperature sensor, Wire harness, Electronic control board
OS

Outdoor temperature sensor failure

Check/Repair

Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the outdoor temperature sensor wire harness. Replace the outdoor temperature sensor if it's defective.

How-to help
Possible parts
Outdoor temperature sensor, Wire harness, Electronic control board
CS

Condenser temperature sensor failure

Check/Repair

Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the condenser temperature sensor wire harness. Replace the condenser temperature sensor if it's defective.

How-to help
Possible parts
Condenser temperature sensor, Wire harness, Electronic control board

Symptoms for window air conditioners

Choose a symptom to see related window air conditioner repairs.

Main causes: bad compressor, lack of refrigerant, bad compressor start relay, electronic control board failure…

Main causes: clogged drain hole, air conditioner not leveled properly…

Main causes: clogged condensate drain, air conditioner not leveled properly, leaky window air seals …

Main causes: dirty air filter, air conditioner is too small for the room, temperature set too cold, control failure…

Main causes: turning the air conditioner off and the back on too quickly, dirty or restricted condenser coil, compressor…

Main causes: lack of electrical power, bad electronic control board, wiring failure, bad temperature sensor…

Repair guides for window air conditioners

These step-by-step repair guides will help you safely fix what’s broken on your window air conditioner.

How to replace a window air conditioner ambient thermistor

How to replace a window air conditioner ambient thermistor

If your window air conditioner isn’t cooling properly, it might need a new ambient thermistor. You can replace it yourse…

Repair difficulty
Time required
 45 minutes or less
How to replace a window air conditioner condenser fan

How to replace a window air conditioner condenser fan

If the condenser fan blade is broken or the condenser fan motor won’t run, you can replace the broken parts yourself by…

Repair difficulty
Time required
 90 minutes or less
How to replace a window air conditioner electronic control board

How to replace a window air conditioner electronic control board

The electronic control board is the brain of your window air conditioner. Here’s how to replace it.…

Repair difficulty
Time required
 45 minutes or less

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