Check out the displayed error codes on the indoor unit air conditioner

Last Update Date : Oct 30. 2020

When your indoor unit indicator blinks, check the code type first. In most cases, it is not a product defect. However, some cases may require an authorized repair person for further service. Check the cases and instructions below. If the error codes keep appear, contact the nearest Samsung service center for professional repairs.

Frequently displayed error codes on the indoor unit

indoor-unit-error-codes

Note: The actual design of the display panel may differ based on the model you have.

Error codes on the indoor unit

Displayed error codes

Cause

Solution

CF

Filter cleaning reminder

Filter reset indicator

Clean or replace the inner filters of the indoor unit

Cl

Auto clean indicator

(Indoor unit produces odors)

Operate the Auto clean function to remove the odors

dF

Automatic Defrost function

(During the Defrost function or

steam is produced on the outdoor unit)

This is not a manufacturing defect

(When the Heat mode is off, this function will be turned off.)

Guide for indicatorsClick to Expand

CF function

When the inside air filter has too much dust, your air conditioner is unable to draw in a sufficient amount of air. This may be the cause of the issue with the temperature and noise. We recommend cleaning the filter every 2 weeks or when the CF display code appears on the indoor unit display. (The CF display code means filter-cleaning reminder.)

Please check your air conditioner model below and follow the how-to guide to clean the air filter. This will give you cool and fresh air. 

dF (Defrost function)

When the Defrost function is on, the df indicator appears on the indoor unit display and steam is produced on the outdoor unit. Then the air conditioner stops running to prevent cold air from coming out of the indoor unit.

Automatic Defrost

When the outdoor temperature is low and the humidity is high, frost may develop on the outdoor heat exchanger, which may decrease heating efficiency. When these conditions are met while Heat mode is on, the air conditioner runs the Defrost function for 5 to 12 minutes to remove frost from the outdoor heat exchanger. 

Error codes requiring authorized service

When the air conditioner displays the E1 code on the display panel and won't turn on, it means the room thermistor (a device connected to the thermostat that detects the room temperature) is shorted or defective. Most of these cases need to be handled by an authorized repair person. Therefore, please contact the nearest Samsung service center.

Error codes on the indoor unit

Displayed error codes

Cause

Solution

E 1 or 21

Defective of the room temperature sensor

Contact authorized Samsung service center

E 1 or 22

Defective of the heat exchanger temperature sensor

Contact authorized Samsung service center

E1 or 54

Defective of fan motor or capacitor

Contact authorized Samsung service center

E1 or 63

Defective of the EEPROM

Contact authorized Samsung service center

E5

-Short of indoor heat exchanger sensor
-Indoor heat exchanger sensor open

Check the exchanger sensor departure of the indoor unit

(Sensor replacement may needed)

E6

-Short of the outdoor heat exchanger sensor
-Outdoor heat exchanger sensor open

Check exchanger sensor departure of the outdoor unit

(Sensor replacement may needed)

E7

-Short of the heater temperature sensor
-Heater temperature sensor open

Check of the heater temperature sensor departure

(Sensor replacement may needed)

Note: If the indoor unit indicator blinks, write down the error code and contact your service provider. It is good to provide them with the error code.

Additional tips about error codesClick to Expand

Error code starting with the numbers

  • The product model with the numbers will display error codes starting with the numbers.
  • However, in this case, the major cause of the error situation and solution will be the same as the alphabet error codes.
  • Error codes with the numbers will blink the 2 digit codes on the display panel.

Note: 

  • The first letter of the error code will differ depending on the model.
  • If the indoor unit indicator blinks, write down the error code and contact your service provider. It is good to provide them with the error code.

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