39 Kolin aircon error codes + troubleshooting - Arlington Air Conditioning Services

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Kolin has made a positive reputation and huge name among the big names of air conditioner manufacturers. Their products are of high quality but issues can occur in any unit. For users’ convenience, there is a feature that troubleshoots the issues in the system and displays a specific error code.

All you need is to know the cause of the error and implement the solution. We have done that for you as well. Continue reading this article for causes and solutions but always seek professional help when needed.

Kolin air conditioner error code E1

Causes:

This error is triggered on the AC system when/if:

The system compressor is subjected to high pressure.
High-pressure protection mode has been activated.

Solutions:

Check any clogging or blockage in the stop valve. Replace the valve if it is broken or not operating well.
Check the resistance coefficient of the sensor. Replace it if it’s weak.
Check the wiring and connections of the low-pressure sensor and coil sensor of the outdoor unit. Repair any damages and replace them if the connection of either of the sensors is faulty.
Check the voltage of the sensor by the meter. Make sure to have a constant and stable supply of voltage.
If the error remains, the refrigerant level is low. Increase its level by filing the freon.

Kolin air conditioner error code E2

Causes:

This error is reported by the AC system when/if:

The system has initiated the process of anti-freeze protection in the indoor unit.

Solutions:

Switch off the air conditioner. Let it rest for 1-3 minutes. Turn it ON again and see if the error is still here.
Run the air conditioner fan at high speed.
If the error doesn’t go away, take the help of a local engineer to ask for guidance and to resolve the issue.

Kolin air conditioner error code E3

Causes:

This error is displayed on the AC system when/if:

The compressor low-pressure protection is activated.
It indicates the low level of refrigerant in the system.
The system has entered the refrigerant collection mode.

Solutions:

Using a meter, check the supply voltage to the compressor and ensure a consistent supply.
Clean the stop valve to remove any dirt, debris, or foreign objects causing a clog.
Inspect the low-pressure sensor of the compressor and if it is not compatible, replace it.
Look through the wire harness and connection for any damages. Repair the damaged wire or the loose connectors.
Check the refrigerant level and fill the freon gas if it is less than required.

Kolin air conditioner error code E4

Causes:

This error is displayed on the AC system when/if:

The PCB detects that the high discharge temperature protection has been started in the compressor.

Solutions:

Turn OFF the air conditioner until it cools down completely. Turn it ON again to see if the error goes away.
Check the voltage by using the voltmeter. Make sure to have a consistent and proper supply of voltage to the compressor
Remove any debris or dust particles clogged or build up in the condenser, cooling coils, bowlers, evaporator, air filters, and other parts of the air conditioner

Kolin air conditioner error code E6

Causes:

This error is triggered on the AC system when/if:

The outdoor and indoor unit of the air conditioner does not have stable communication with each other.
Some damage in the wiring or loose connections between the units.

Solutions:

Check the communication and wiring. Replace and repair any damaged, pinched or broken wire. Make sure the connectors remain at their particular place.
Check the control board or main PCB for any issues with the help of a technician. Repair or replace it if it’s faulty.
If the error remains, call the authorized service center to help with what to do further.

Kolin air conditioner error code E8

Causes:

This error is displayed on the AC system when/if:

The fan motor of the indoor unit is not operating well.
Something is stuck in the fan of the indoor unit.
The voltage supply to the fan motor is either unstable or not sufficient.

Solutions:

Check and rotate the fan of the indoor unit manually to remove any blockages.
Check the voltage supply to the indoor fan motor. Make sure a consistent and stable supply of voltage is given to the indoor fan unit.
Check the capacity of the AC motor and fan motor. If it’s low or there is conductivity, replace the capacitor. Replace or repair the fan motor if it’s faulty.
If the error remains, check the control board and main PCB for any issues. Replace the board if it is not working well.

Kolin air conditioner error code E9

Causes:

This error is reported by the AC system when/if:

Full water protection has been activated in the system.
The water pump is not operating or has some issues.
An increase in the level of water in the drain tray.

Solutions:

Check for any issues in wiring and connections between the main power element and the water pump. If it’s loose or broken, repair the connections and wiring as needed.
Inspect the water pump motor and if it is faulty, replace or repair it.
Ensure proper drainage of water. Clean any debris and dust particles in the drain tray.

Kolin air conditioner error code F0

Causes:

This error is displayed on the AC system when/if:

The indoor unit ambient temperature sensor is malfunctioning.
There is an open or short circuit in the indoor unit ambient temperature sensor.

Solutions:

Check the resistance coefficient of the sensor by using the voltmeter. If it is not operating well, replace the sensor with a better and more efficient one.
Check for any loose or broken wiring or connection between the sensor and the main PCB. Repair the damages as required.
Check for any open or short circuit in the circuit with the help of a professional. If the sensor is damaged or burned, replace it.
If the error remains, check the main PCB for any malfunctions. Replace it if it’s not working properly.

Kolin air conditioner error code F1

Causes:

This error is displayed on the AC system when/if:

This error indicates some problems with the functioning of the evaporator temperature sensor.
There is an open or short circuit in the evaporator temperature sensor of the system.

Solutions:

Try the same solutions as suggested for the Kolin air conditioner “Error Code F0”.

Kolin air conditioner error code F2

Causes:

This error is triggered on the AC system when/if:

There is some malfunctioning in the condenser temperature sensor.
The condenser temperature sensor is subjected to open or short circuits.

Solutions:

Try the same solutions as suggested for the Kolin air conditioner “Error Code F0”.

Kolin air conditioner error code F3

Causes:

This error is reported by the AC system when/if:

The outdoor ambient temperature sensor is not working well.
Open or short circuits occur in the ambient temperature sensor of the outdoor unit.

Solutions:

Try the same solutions as suggested for the Kolin air conditioner “Error Code F0”.

Kolin air conditioner error code F4

Causes:

This error is displayed on the AC system when/if:

The discharge temperature sensor is not working or has some issues with its functioning.
There is an open or short circuit in the discharge temperature sensor.

Solutions:

Try the same solutions as suggested for the Kolin air conditioner “Error Code F0”.

Kolin air conditioner error code EE

Causes:

This error is displayed on the AC system when/if:

The EEPROM (Non- Volatile Memory) of the control board has some problems.
The instructions on the EEPROM have been erased or removed.
The system has some issues in reading the instructions on the memory chip.
The EEPROM chip is broken or damaged.

Solutions:

Turn OFF the air conditioner for 5-15 minutes. Restart the air conditioner after rest.
Check for any breakage or damage in the EEPROM chip. If it’s burnt or broken, replace the whole control board.
Seek help from the company’s customer support or any professional to check the EEPROM chip. Make sure there are instructions on the EEPROM chip, and upload the instructions if it’s not there.

Always take help from the company’s official engineer for reprogramming the chip as they have better access to compatible programs for your particular model, version, and type of Kolin air conditioner.

Kolin air conditioner error code ee

Causes:

This error is triggered on the AC system when/if:

This error is the same as that of the Kolin air conditioner “Error Code EE” but it usually occurs as the result of some issues in the outdoor unit “Drive Memory Chip”.

Solutions:

Shut down the air conditioner for a few minutes and then turn it ON again.
Energize it multiple times to see if the error resolves.
Check the memory chip of the outdoor unit. Replace the drive board of the outdoor unit if the memory chip is broken or malfunctioning.

The same procedure will be used for any issues in the drive memory chip of the indoor unit as well.

Kolin air conditioner error code PF

Causes:

This error is displayed on the AC system when/if:

The electric box sensor is not operating well.
There is an open or short circuit in the electric box sensor of the air conditioner.

Solutions:

Check the electric box for any short circuits. Repair the circuit if there is any short circuit or issues.
Check the wiring and connections in the electrical box. Repair the uninsulated wire or loose connections in it.
Repair or replace the main power transistor of the electrical box if there is any malfunctioning or issues in it.
Check the outdoor unit fan. Make sure it is working properly. Repair or replace the fan motor if faulty.
If the error remains, check the main PCB of the outdoor unit. Replace the main PCB if it is faulty.

Always seek help from the HVAC engineer or a local technician. This will prevent any damage to you and your system as working with wires or electrical parts of the system without any proper knowledge or safety can lead to dangerous effects.

Kolin air conditioner error code H3

Causes:

This error is reported by the AC system when/if:

The compressor overload protection is activated or the compressor is overloading.
Debris, mold, mildew, or dust is covering the condenser coils.
There is leakage or clogging in the coils, evaporator, blowers, or any other component.
The air conditioner has been operating at extreme temperatures continuously for a long time.

Solutions:

If it’s running for too long, turn it OFF for about 5-15 minutes and then turn it ON again to see if the error is removed.
Clean all the components mentioned above to get rid of all the debris or any dust clogged up.
Check the air conditioner for any leakages or blockages. Take any technician’s help to repair the defective areas as needed.
If the error remains, contact the technician for finding any issues or malfunctions in the evaporators or condenser. Repair the parts or replace them as required.

Kolin air conditioner error code H4

Causes:

This error is displayed on the AC system when/if:

The overload protection is activated or the system is overloading.
The coils are covered up with dust.
Leakage or clogging in the coils, evaporator, and blowers.

Solutions:

Try the same solutions as suggested for the Kolin air conditioner “Error Code H3”.

Kolin air conditioner error code H5

Causes:

This error is displayed on the AC system when/if:

The IPM (Intelligent Power Module) protection is activated.
The connection or wiring is loose or broken in the IPM sensor.
The power to the main unit is not stable.
The PCB or control board is not functioning well.

Solutions:

Turn OFF the system and keep it shut down for a few minutes. Turn it ON again after rest.
Check the IPM protection sensor for any loose connections and wiring. Repair all the broken wiring and ensure the IPM protection sensor is perfectly tightened.
Check the power or voltage with the meter. Ensure a constant and stable supply of voltage.
Check the main PCB or control board for any issues. Repair or replace the components as needed.
If the error is still there, seek the help of a local technician to check the unit for any malfunction and resolve the issue.

Kolin air conditioner error code H6

Causes:

This error is triggered on the AC system when/if:

TheDC fan motor is not working well or is completely defective.

Solutions:

Switch OFF the system and restart it again to see if the error is removed.
Check the wiring and connections between the fan motor, power supply, and main PCB. Repair the pinched or loose connections as required.
Contact the technician for any issues with the DC fan motor. Repair or replace it if it’s faulty.
If the error remains, get help from an authorized service center or a local technician to check the main PCB and other electrical parts for any issues. Repair or replace the components as needed.

Kolin air conditioner error code H7

Causes:

This error is displayed on the AC system when/if:

The system has initiated the drive desynchronization protection mode.
The compressor motor is malfunctioning.

Solutions:

Check the terminals of the compressor and main board. Ensure that they are perfectly tightened.
Adjust the compressor phase sequence properly.
Check if the mainboard or compressor is faulty. Replace the component.
Inspect all the wiring, connections, and hardware of the unit for any issues and solve the error as needed. Seek professional help where needed.

Kolin air conditioner error code HC

Causes:

This error is displayed on the AC system when/if:

The PFC (Power Factor Correction/Controller) protection mode is activated.
The connection or wiring is loose or broken in the PFC sensor/module.
The power to the main unit is not stable.
The PCB is malfunctioning.

Solutions:

Turn OFF the system and turn it ON to see if the error goes away.
Check the PFC protection sensor for any loose connections and wiring. Repair all the broken wiring and ensure the PFC protection sensor is perfectly tightened.
Check the power or voltage and ensure a stable supply.
Check the main PCB and replace the component if needed.
If the error is there, seek the help of a local technician to check the unit for any malfunction and resolve the issue.

Kolin air conditioner error code Ld

Causes:

This error is triggered on the AC system when/if:

The reverse phase and open phase combination are wrong.
The wiring and connections of reverse phase open phase power are damaged or loose.

Solutions:

Check the wiring and connections of the open and reverse phases. Repair the pinched, damaged, poorly insulated, or uninsulated power wiring as needed.
Check the main PCB of the outdoor unit for any issues. Repair or replace it as required.

Kolin air conditioner error code LE

Causes:

This error is displayed on the AC system when/if:

This error is indicated when the compressor stalling protection is activated in the air conditioner.
The compressor of the air conditioner is stalling or malfunctioning.

Solutions:

Check the refrigerant level in the system and if it’s low or not enough, call the HVAC engineer to refill the refrigerant.
Check the system for any leakages. Repair them immediately if required.
Check the voltages supplied to the compressor and ensure consistency and enough voltage is being supplied.
If the error remains, call the HVAC engineer for further guidance and help.

Kolin air conditioner error code LF

Causes:

This error is reported by the AC system when/if:

Tower protection mode is activated in the air conditioner.
There is a sudden increase in the power supply due to a high voltage due to mishaps such as the unit being struck by lightning.

Solutions:

Check the voltage with the meter and ensure that consistent and stable voltage is being supplied.
Switch OFF the AC for 2-5 minutes and turn it ON again to see if the error goes away.
Repair the connections and electrical components of the unit for malfunctioning.
If there was a large sudden surge of voltage or the power struck lightning. Contact the technician to check your air conditioner and all of its components thoroughly for any issues.

In case of major mishaps like the AC unit being struck by lightning, it is always recommended not to start or run the AC system without proper inspection.

Kolin air conditioner error code Lp

Causes:

This error is reported by the AC system when/if:

The indoor and outdoor units of the air conditioner are mismatched.

Solutions:

Check the label of both the outdoor unit and indoor unit of the air conditioner. If the model number, version number, or type of the unit is different, ask the company sales department to deliver the right model of the unit.

Kolin air conditioner error code U7

Causes:

This error is displayed on the AC system when/if:

The 4-way valve of the outdoor unit is not operating.
The 4-way valve direction changing protection has been activated.
The main PCB of the outdoor unit is faulty.

Solutions:

Check the 4-way valve by seeking the help of the HVAC professional for any issues. Repair or replace the broken or damaged parts as needed.
Check the refrigerant level of the air conditioner and fill the freon gas if it is low.
Check the thermistor for any issues. Replace or repair the component if it is faulty.
Check the main PCB of the outdoor unit. Replace the faulty component if needed.

Kolin air conditioner error code P0

Causes:

This error is triggered on the AC system when/if:

The drive reset protection has been activated on the system.

Solutions:

The first step is resetting the whole system and it usually resolves the error.
Power OFF the unit and then turn it ON after some rest.
At the breaker, turn the power OFF for 2-5 minutes. Turn ON the power again to see if the error goes away.

As this error can occur due to many other reasons as well depending upon the condition and type of system, it is always recommended to seek professional help to take the error down. Avoid tweaking the system by yourself if you don’t have the proper knowledge or skills.

Kolin air conditioner error code P5

Causes:

This error is reported by the AC system when/if:

High voltage is supplied to the inverter compressor of the air conditioner.
The over-current protection mode is activated in the system.
The increase in pressure is because of the clogged-up refrigerant circuits.

Solutions:

Check the power cord and terminals to make sure that it is connected to the wall receptacle properly.
Check the refrigerant circuits of the air conditioner. Ensure that they are fully opened.
Clean the condenser coils and other parts to get rid of the dust or debris.
Check the power supply for any faults. Replace or repair it as needed.
Check the inverter compressor and its components. Repair or replace the defective areas as needed.

Kolin air conditioner error code P6

Causes:

This error is displayed on the AC system when/if:

The communication scenario between the main board and the drive of the unit is broken.
The communication wire is damaged.

Solutions:

Try the exact solution as suggested for the Kolin air conditioner “Error Code E6”.

Kolin air conditioner error code P7

Causes:

This error is triggered on the AC system when/if:

The functioning of the drive module sensor.
There is an open or short circuit in the drive module sensor of the system.

Solutions:

Try the same solutions as suggested for the Kolin air conditioner “Error Code F0”.

Kolin air conditioner error code P8

Causes:

This error is reported by the AC system when/if:

The system has initiated the drive module over temperature protection mode.
The temperature has increased in the drive module to a high level.

Solutions:

Check the IPM and PFC temperature protection sensor. Make sure that they are fine, accurately placed, and tightened perfectly.
Contact the professional engineer/technician for help.
Check the main board of the unit. If there are some issues, replace the main board

Kolin air conditioner error code PA

Causes:

This error is triggered on the AC system when/if:

The current protection mode is activated.
The current protection sensor is not functioning properly.

Solutions:

Turn OFF the air conditioner for some time and restart it again as this can be a one-time error and it can be resolved.
Ensure consistent power supply.
Repair damaged wires or connectors.
Replace the power supply or main PCB if defective.
Contact the technician to check the unit. Repair or replace the defective areas as required.

Kolin air conditioner error code Pc

Causes:

This error is reported by the AC system when/if:

There are some issues with the drive current.
The drive current sense circuit is defective.
The drive current circuit has a short circuit, burned or broken.

Solutions:

Contact the technician to check the circuit for any issues. Replace or repair the defective parts as needed.

Kolin air conditioner error code PE

Causes:

This error is triggered on the AC system when/if:

Temperature drift protection has been initiated on the system.

Solutions:

Turn OFF the AC system and give it a rest before starting it again.
Check wiring and connection for burning or short circuits. Do the repairing work where needed.
Do a thorough cleaning of the system.
Check refinement level and compressor for issues. Fill the gas or repair the compressor as needed.
Contact an HVAC beginner to inspect the system as this could be a major issue and need a proper inspection.

Kolin air conditioner error code PL

Causes:

This error is reported by the AC system when/if:

The system detects the bus voltage is lower than the minimum required limit.

Solutions:

Check the voltage with the help of a voltmeter.
Do not turn ON the air conditioner until the voltages come under their normal range. Once they are stable, turn ON the AC to see if the error goes away.
If the voltage is fine, then check the main board as it can be faulty. Replace the board if defective.
If the error persists, contact the technician to check the compressor. Replace or repair it as required.

Kolin air conditioner error code PH

Causes:

This error is displayed on the AC system when/if:

This error occurs when the system detects the input voltage is higher than the maximum required limit.

Solutions:

Try the exact solutions as suggested for the Kolin air conditioner “Error Code PH”.

Kolin air conditioner error code PU

Causes:

This is a change loop error and is triggered on the AC system when/if:

There is a malfunction in the charging circuit elements.
The capacitor charge is not stable or working well.

Solutions:

Check the wiring and connections of the PFC wire connection with the help of a technician for any issues. Repair the defective parts as required.
Check the mainboard or capacitor for any issues. Replace it if it’s faulty. Always seek the help of a professional and experienced technician before doing any replacements.

Kolin air conditioner error code PP

Causes:

This error is reported by the AC system when/if:

The input voltage is higher or lower than the required limit.
The input voltage is not normal.

Solutions:

Try the exact solutions as suggested for the Kolin air conditioner “Error Code PL”.

Kolin air conditioner error code C4

Causes:

This error is displayed on the AC system when/if:

The capacity code of the outdoor unit is wrong or malfunctioning.
The outdoor unit capacitor is malfunctioning.

Solutions:

Check the outdoor unit capacity and if the capacitor is weak or broken, replace it with a new one.
Seek professional help if the error is still there even after changing the capacitor as this may need a look into the wiring connection and some other components of the OTD unit.