Carrier AC Error Codes | Troubleshoot | Reset | Solution

The complete list of Carrier AC Error Codes(Example:-CL,F2,E1,EC,carrier ac error code e5) is listed on this website. When an error is displaying on your air conditioning display, the air conditioning stops working. Your air conditioning will not work until its error is gone. That is why all the list code of carrier air conditioning error has been put on this website so that you can easily solve the career air conditioning error if you do not get the solution, then you can comment our team update the solution of that error soon on this site. Will be done.

Note: There is also a flowchart troubleshooting below to help fix your carrier AC.
Carrier Partition System Air Conditioner Error Code and Troubleshooting
Note: Carrier air conditioner heater model numbers and sizes that apply to the error codes and troubleshooting on this page:

– Carrier AC multi split ductless unit: 38GVM size 18k, 24k, 30k, 36k and 42k.
– Carrier AC multi split ductless unit: 40GVM size 9k, 12k and 18k.
Carrier AC 38 and 40 GVM indoor unit error code

carrier ductable ac error code list

Carrier AC Error Code – Indoor Unit (38GVM & 40GVM)
Note: Different unit sizes may have different error code exploration, carefully check the list below to find the size of your carrier AC and then your error code.

Carrier Split Air Conditioner AC Error Codes | Troubleshooting

Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Defrost Mode 1

Carrier ac Error Codes IDU Side: 0A
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Defrost Mode 2

Carrier ac Error Codes IDU Side: F0
Error Code Explication: (Unit Size 18K – 24K – 30K) = Low charge or refrigeration system blockage
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Codes IDU Side: F3
Error Code Explication: (Unit Size 18K – 24K – 30K) = Outdoor ambient temperature sensor malfunction
Error Code Explication: (Unit Size 36K – 42K) = Outdoor ambient temperature sensor malfunction

Carrier ac Error Codes IDU Side: F4
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Outdoor mid-coil temperature sensor malfunction

Carrier ac Error Codes IDU Side: F5
Error Code Explication: (Unit Size 18K – 24K – 30K) = Outdoor discharge air temperature sensor
Error Code Explication: (Unit Size 36K – 42K) = Outdoor discharge air temperature sensor

Carrier ac Error Codes IDU Side: F7
Error Code Explication: (Unit Size 18K – 24K – 30K) = Cooling oil return cycle
Error Code Explication: (Unit Size 36K – 42K) = Cooling oil return cycle

Carrier ac Error Code IDU Side: E1
Error Code Explication: (Unit Size 18K – 24K – 30K) = System high pressure protection
Error Code Explication: (Unit Size 36K – 42K) = System high pressure protection

Carrier ac Error Code IDU Side: E2
Error Code Explication: (Unit Size 18K – 24K – 30K) = Indoor freeze protection
Error Code Explication: (Unit Size 36K – 42K) = Indoor freeze protection

Carrier ac Error Code IDU Side: E3
Error Code Explication: (Unit Size 18K – 24K – 30K) = System low pressure protection
Error Code Explication: (Unit Size 36K – 42K) = System low pressure protection

Carrier ac Error Code IDU Side: E4
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor discharge high temperature protection
Error Code Explication: (Unit Size 36K – 42K) = Compressor discharge high temperature protection

Carrier ac Error Code IDU Side: E6
Error Code Explication: (Unit Size 18K – 24K – 30K) = Communication error between indoor and outdoor
Error Code Explication: (Unit Size 36K – 42K) = Communication error between indoor and outdoor

Carrier ac Error Code IDU Side: E7
Error Code Explication: (Unit Size 18K – 24K – 30K) = Mode conflict
Error Code Explication: (Unit Size 36K – 42K) = Mode conflict

Carrier ac Error Code IDU Side: E8
Error Code Explication: (Unit Size 18K – 24K – 30K) = System overload protection
Error Code Explication: (Unit Size 36K – 42K) = System overload protection

Carrier ac Error Code IDU Side: E9
Error Code Explication: (Unit Size 18K – 24K – 30K) = Cold Blow Protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Code IDU Side: dd
Error Code Explication: (Unit Size 18K – 24K – 30K) = Test mode
Error Code Explication: (Unit Size 36K – 42K) = Test mode

Carrier ac Error Code IDU Side: Fo
Error Code Explication: (Unit Size 18K – 24K – 30K) = Pump down mode
Error Code Explication: (Unit Size 36K – 42K) = Pump down mode

Carrier ac Error Code IDU Side: P0
Error Code Explication: (Unit Size 18K – 24K – 30K) = IPM Rest
Error Code Explication: (Unit Size 36K – 42K) = IPM Rest

Carrier ac Error Code IDU Side: P5
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor current protection
Error Code Explication: (Unit Size 36K – 42K) = Compressor current protection

Carrier ac Error Code IDU Side: P6
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Communication error between the inverter drive and main board

Carrier ac Error Code IDU Side: P7
Error Code Explication: (Unit Size 18K – 24K – 30K) = Heat sink temperature sensor malfunction
Error Code Explication: (Unit Size 36K – 42K) = Heat sink temperature sensor malfunction

Carrier ac Error Code IDU Side: P8
Error Code Explication: (Unit Size 18K – 24K – 30K) = IPM over temperature protection
Error Code Explication: (Unit Size 36K – 42K) = IPM over temperature protection

Carrier ac Error Code IDU Side: P9
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Open Contactor

Carrier ac Error Code IDU Side: Pc
Error Code Explication: (Unit Size 18K – 24K – 30K) = Current sensor malfunction
Error Code Explication: (Unit Size 36K – 42K) = Current sensor malfunction

Carrier ac Error Code IDU Side: Pd
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Current sensor mis-wiring protection

Carrier ac Error Code IDU Side: PA
Error Code Explication: (Unit Size 18K – 24K – 30K) = Input current protection
Error Code Explication: (Unit Size 36K – 42K) = Input current protection

Carrier ac Error Code IDU Side: PF
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Inverter board ambient temperature sensor malfunction

Carrier ac Error Code IDU Side: PL
Error Code Explication: (Unit Size 18K – 24K – 30K) = Low voltage protection
Error Code Explication: (Unit Size 36K – 42K) = Low voltage protection

Carrier ac Error Code IDU Side: PH
Error Code Explication: (Unit Size 18K – 24K – 30K) = High voltage protection
Error Code Explication: (Unit Size 36K – 42K) = High voltage protection

Carrier ac Error Code IDU Side: PP
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Abnormal input AC voltage

Carrier ac Error Code IDU Side: PU
Error Code Explication: (Unit Size 18K – 24K – 30K) = Capacitor charging malfunction
Error Code Explication: (Unit Size 36K – 42K) = Capacitor charging malfunction

Carrier ac Error Code IDU Side: H1
Error Code Explication: (Unit Size 18K – 24K – 30K) = Defrost or heating oil return cycle
Error Code Explication: (Unit Size 36K – 42K) = Heating oil return cycle

Carrier ac Error Code IDU Side: H2
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Forced defrost

Carrier ac Error Code IDU Side: H3
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor overheat protection
Error Code Explication: (Unit Size 36K – 42K) = Compressor overheat protection

Carrier ac Error Code IDU Side: H5
Error Code Explication: (Unit Size 18K – 24K – 30K) = IPM Protection
Error Code Explication: (Unit Size 36K – 42K) = IPM Protection

Carrier ac Error Code IDU Side: H7
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor speed reduction
Error Code Explication: (Unit Size 36K – 42K) = Compressor speed reduction

Carrier ac Error Code IDU Side: Hc
Error Code Explication: (Unit Size 18K – 24K – 30K) = PFC board protection
Error Code Explication: (Unit Size 36K – 42K) = PFC board protection

Carrier ac Error Code IDU Side: L9
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor high voltage protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Code IDU Side: Lc
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor start-up failure
Error Code Explication: (Unit Size 36K – 42K) = Compressor start-up failure

Carrier ac Error Code IDU Side: Ld
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor phase loss protection
Error Code Explication: (Unit Size 36K – 42K) = Compressor phase loss protection

Carrier ac Error Code IDU Side: LE
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Compressor stalling

Carrier ac Error Code IDU Side: LF
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Compressor over-speed protection

Carrier ac Error Code IDU Side: A5
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Condenser coil inlet temp sensor malfunction

Carrier ac Error Code IDU Side: A7
Error Code Explication: (Unit Size 18K – 24K – 30K) = NA
Error Code Explication: (Unit Size 36K – 42K) = Condenser outlet temperature sensor malfunction

Carrier ac Error Code IDU Side: EE
Error Code Explication: (Unit Size 18K – 24K – 30K) = Memory card error
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Code IDU Side: En
Error Code Explication: (Unit Size 18K – 24K – 30K) = Frequency limitation for module circuit protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Code IDU Side: EU
Error Code Explication: (Unit Size 18K – 24K – 30K) = Frequency limitation for module temperature protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Code IDU Side: F6
Error Code Explication: (Unit Size 18K – 24K – 30K) = Frequency limitation for overload protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Error Code IDU Side: F8
Error Code Explication: (Unit Size 18K – 24K – 30K) = Frequency limitation for system circuit protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: F9
Error Code Explication: (Unit Size 18K – 24K – 30K) = Frequency limitation for module circuit protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: FH
Error Code Explication: (Unit Size 18K – 24K – 30K) = Frequency limitation for freeze protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: HE
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor demagnetizing protection
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: LP
Error Code Explication: (Unit Size 18K – 24K – 30K) = Indoor and outdoor units mismatch
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: U1
Error Code Explication: (Unit Size 18K – 24K – 30K) = Compressor phase detection malfunction
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: U3
Error Code Explication: (Unit Size 18K – 24K – 30K) = Low DC bus voltage
Error Code Explication: (Unit Size 36K – 42K) = NA

Carrier ac Fault Code IDU Side: dn
Error Code Explication: (Unit Size 18K – 24K – 30K) = Communication error between main board and EXV
Error Code Explication: (Unit Size 36K – 42K) = Communication error between main board and EXV

Carrier Split System Air Conditioner Error Code Table:

Carrier Error Code 13
Carrier Error Code Explication: Unit A indoor pipe outlet temperature sensor malfunction

Carrier Error Code 14
Carrier Error Code Explication: Unit A indoor pipe inlet temperature sensor malfunction

Carrier Error Code 15
Carrier Error Code Explication: Unit A Indoor return air sensor malfunction

Carrier Error Code 16
Carrier Error Code Explication: Unit A mode conflict

Carrier Error Code 17
Carrier Error Code Explication: Unit A freeze protection

Carrier Error Code 23
Carrier Error Code Explication: Unit B indoor pipe outlet temperature sensor malfunction

Carrier Error Code 24
Carrier Error Code Explication: Unit B indoor pipe inlet temperature sensor malfunction

Carrier Error Code 25
Carrier Error Code Explication: Unit B Indoor return air sensor malfunction

Carrier Error Code 26
Carrier Error Code Explication: Unit B mode conflict

Carrier Error Code 27
Carrier Error Code Explication: Unit B freeze protection

Carrier Error Code 33
Carrier Error Code Explication: Unit C indoor unit pipe outlet temperature sensor malfunction

Carrier Error Code 34
Carrier Error Code Explication: Unit C indoor unit pipe inlet temperature sensor malfunction

Carrier Error Code 35
Carrier Error Code Explication: Unit C Indoor unit return air sensor malfunction

Carrier Error Code 36
Carrier Error Code Explication: Unit C mode conflict

Carrier Error Code 37
Carrier Error Code Explication: Unit C freeze protection

Carrier Error Code 41
Carrier Error Code Explication: Unit D communication error

Carrier Error Code 42
Carrier Error Code Explication: Indoor return air temperature sensor malfunction

Carrier Error Code 43
Carrier Error Code Explication: Unit D indoor pipe outlet temperature sensor malfunction

Carrier Error Code 44
Carrier Error Code Explication: Unit D indoor pipe inlet temperature sensor malfunction

Carrier Error Code 45
Carrier Error Code Explication: Unit D Indoor return air temperature sensor malfunction

Carrier Error Code 46
Carrier Error Code Explication: Unit D mode conflict

Carrier Error Code 47
Carrier Error Code Explication: Unit D freeze protection

Carrier Error Code 51
Carrier Error Code Explication: Unit E communication error

Carrier Error Code 52
Carrier Error Code Explication: Unit E indoor pipe midway temperature sensor malfunction

Carrier Error Code 53
Carrier Error Code Explication: Unit E indoor pipe outlet temperature sensor malfunction

Carrier Error Code 54
Carrier Error Code Explication: Unit E indoor pipe inlet temperature sensor malfunction

Carrier Error Code 55
Carrier Error Code Explication: Unit E Indoor return air temperature sensor malfunction

Carrier Error Code 56
Carrier Error Code Explication: Unit E mode conflict

Carrier Error Code 57
Carrier Error Code Explication: Unit E freeze protection

Carrier Error Code C5
Carrier Error Code Explication: Jumper missing on replacement indoor board

General troubleshooting for below carrier split air conditioners:

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Carrier AC problem: Indoor unit emits bad odor at start-up
Career AC Possible Reasons:
-Air filter dirty
– Commercial air has an odor even after cleaning the filter
Carrier AC Solutions:
Clean the air filter

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Carrier AC Problem: When the unit is running, you hear the noise of running water
Career AC Possible Reasons:
-It is normal and the refrigerant flowing through the system

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Carrier AC problem: Indoor unit creates haze when the air conditioner is running
Career AC Possible Reasons:
-It is normal cooling and is caused by high humidity and temperature in the room
Carrier AC Solutions:
-No maintenance required
-Mist should be closed as the room is cooled and humidity removed

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Carrier AC Problem: Wireless remote control does not work
Career AC Possible Reasons:
-The batteries are dead
-Unit needs reset
Carrier AC Solutions:
-Replace battery
– Power off the power unit
Remove the plug from the wall and then plug the plug and restart unit

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Carrier AC problem: room leakage from indoor unit
Career AC Possible Reasons:
-Without flowing water
Carrier AC Solutions:
Test indoor drain drain

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Carrier AC Problem: Unit / system does not work
Career AC Possible Reasons:
-Protect the unit at instant restart after a stop, the system controller will delay the unit for 3 minutes before allowing the unit to start.
-The circuit breaker is stuck or the fuse has blown
-power failure
-Error codes displayed
-Voltage is too low
Carrier AC Solutions:
-After turning off the unit, wait at least 3 minutes before attempting to restart
– Replace fuse with circuit breaker or with specified replacement fuse
Start operation when power is restored

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Carrier AC problem: cooling is not working properly
Career AC Possible Reasons:
-The filter is blocked by dust
-Train is not set properly
-A window or door is open
-The external unit is interrupted
– Its fan speed is very low
-Operation mode is in fan instead of cool
Carrier AC Solutions:
Clean the air filter
Check temperature and reset if necessary
Close the window or door
-Removing the disease barrier
Change fan speed selection
Change the operating mode to cool or reset the unit

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Carrier AC problem: heating is not working properly
Career AC Possible Reasons:
-The filter is blocked by dust
-Train is set too low
-A window or door is open
-The external unit is interrupted
Carrier AC Solutions:
Clean the air filter
Check temperature and reset if necessary
Close the window or door
-Removing the disease barrier

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Carrier AC Problem: Unit stops during operation
Career AC Possible Reasons:
-Off timer is not working correctly
-Error codes displayed
Carrier AC Solutions:
Restart operating mode

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carrier ac error codes e3

E-3. INDOOR FAN Motor Heat up Or  LOCKED/ No power Supply to IDU Fan Motor. Check motor rotating by Hand manually ,If hard rotating .  replace motor. Or PCB defective.

Carrier ac error codes f2

F2 Error Check out Indoor unit coil temperature sensor or connector of sensor is defective Then Replace new Temp. Sensor Properly.

carrier fault codes 5 flashes

Carrier inverter ac error code e1

(Carrier ac error code e1)E1: Loss of communication between the CCC 2 thermostat and an individual system power module board. The LED error code will display the EI and the communication lost area number. Any additional area that would blink other than the loose communication current area.

How do I reset my carrier AC remote?

How to reset a carrier air conditioner unit
Locate the “Reset” button on the control panel of the air conditioner.
Hold the “Reset” button for 3 seconds and then release. 
Press and hold the “Reset” button for another 3 seconds – this time there should be a light flash on the display.
Wait a few moments when the unit is reset.

Carrier ac Error Code cl ?

Air filter cleaning reminder. After 240 hours of use, the display window “CL” will flash on the indoor unit. This is a reminder to clear your filter. After 15 seconds, the unit will return to its previous performance.

Why is my career AC not working?

Your air conditioner runs on electricity, so if it won’t deliver electricity, locate the electrical panel (breaker box) in your home. Look for a blown fuse or a trip circuit circuit breaker that is not in the ON position. … The air conditioner is also connected to the fuse in the circuit breaker or electrical panel (breaker box).

What is EC error in carrier AC?

carrier ac Fault code ec An EC Fault code on a mini partition indicates a refrigerant leak detection Fault. This means that the system has detected a leak. While the unit may leak, keep in mind sensors and boards may also malfunction. Due to EC error code. Refrigerant leaks.

Carrier Window Type Air Conditioner DIY Air Filter Cleaning

Step 1: Press the metal cover.
Step 2: Gently remove the front grill. 
Step 3: For the remote-control model, press the connector to disconnect the wiring.
Step 4: Pull out the air filter.
Step 5: Remove the special air filter, shake off the dust then set aside.

What is the dry mode in carrier AC?

This is the function that is used on rainy days as the humidity level is very high during the rainy days and this mode keeps the atmosphere of the room cool and dry. ● Air-conditioner in dry mode acts as a dehumidifier by removing moisture from indoor air

What is Follow Me in career AC?

When the Follow Me feature is activated, the remote will act as a thermostat instead of a unit, further increasing the cooling limit of the units. … The remote control will send this signal to the air conditioner every 3 minutes until the follow me button is pressed again.

Which mode is best for AC?

aircon dry mode
AC professionals recommend using aircon dry mode for 1-2 hours only. While “dry mode” does a good job in reducing air humidity, keep in mind that it should not be used to completely remove room moisture. It should only be used to maintain moisture levels which is ideal for human comfort.

What is the health mode in AC?

Answer: You can press the Health button in Health mode, there is a word “Health” or leaf icon on the Health button. In health mode, the anion generator will ionize the hydron in the air, and produce negative oxygen ions, it can make the air fresh and kill bacteria.

Is AC harmful to health?

AC is notorious for exacerbating symptoms of low blood pressure, arthritis, and neuritis, which makes pain management more difficult for those adolescents when using their central air. People who spent a lot of time in an air-conditioned environment become more intolerant of hot summer temperatures.

AC bad sleep?

Summary: Using an air conditioner helps people sleep better at night swallowing. However, researchers found that even when the airflow is directed at the human body, even when at an insensitive velocity, it impacts the state of sleep, causing sleep conditions and affecting the depth of sleep.

Which AC mode is energy efficient?

Fan system. When the fan mode is activated, the internal fan within the AC transmits air within a room. This is done without any cooling, like a normal fan. The major advantage of using fan mode in AC is the apparent energy savings due to the absence of compressor function.

Carrier Air Conditioning Error Code Solution|How to Reset a Carrier Air Conditioner

Carrier Split Air Conditioner Error Codes

carrier ac error code e5