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Troubleshoot daikin air conditioner

Daikin Air Conditioning Troubleshooting Guide

Daikin is one of the leading air conditioning brands in Australia, providing a range of high-quality ducted and split systems across the country. But as with any complicated piece of equipment, things can go wrong, which can leave you scratching your head for answers.

Thankfully, many issues can quickly be identified and fixed. In this Daikin air conditioning troubleshooting guide, you can diagnose the most common problems for your AC unit, and figure out what to do next.

Table of contents

  1. Daikin aircon not cold
  2. Daikin air conditioning error codes
  3. Daikin air conditioner leaking water
  4. Daikin AC bad smell
  5. Greenlight flashing on Daikin air conditioner
  6. Operation stops
  7. Daikin AC remote not working and how to reset Daikin AC remote
  8. Remote control display is faded
  9. Daikin air conditioner not responding to remote control
  10. How to reset Daikin air conditioner
  11. Why does my Daikin keep turning off?
  12. Daikin heat pump troubleshooting
  13. Daikin zone controller not working
  14. Daikin air conditioner opens and closes
  15. Strange Daikin AC noise
  16. Why is my air conditioner blowing hot air?
  17. How to turn on Daikin air conditioner

Daikin troubleshooting guide

Daikin aircon not cold

If your Daikin air conditioner doesn’t seem to be cooling the room down, there are a few things that you should check:

  1. Check that your doors and windows are closed: If your doors and windows are open, the cool air will escape and the AC unit won’t be able to regulate the temperature.
  2. Check the settings on your remote: Do you currently have cooling mode running? This is shown as an icicle icon on the remote control. If this is fine, check that the temperature is 24 degrees or lower. If you’ve changed the temperature, wait for at least 10 minutes before re-assessing the problem.
  3. Check your air filters: Air filters get clogged quickly, so you should check them once every four weeks at least (especially during summer).

Daikin air conditioning error codes

If your unit is showing an error code, you can identify the issue using Daikin’s error code search.

Daikin air conditioner leaking water

It’s normal for air conditioners to drip water from time to time, but if large amounts of water is leaking from the unit, it can be caused by a couple of things:

  1. A blocked air filter
  2. A hole or crack in the drain pan

First, try cleaning your air filter. If that doesn’t fix the issue, you’ll need to contact a technician to troubleshoot the problem.

Daikin AC bad smell

If you notice the occasional bad smell coming from the unit after turning it on, it’s likely to be the ozone that is generated by the Streamer air purifying operation. This is perfectly normal, and nothing to worry about.

If your unit is consistently producing a bad smell or smells like it’s burning, turn it off immediately and call an air conditioning technician.

Greenlight flashing on Daikin air conditioner

A green flashing light indicates that the “dust box” needs cleaning, which is the filter. Clean your filter based on the instructions for your unit (they usually just slide out) and the issue should be resolved.

Operation stops

If the unit stops unexpectedly, this may be caused by a voltage overload. Usually, the air conditioner will restart automatically after a few minutes, but if this doesn’t happen, you can try resetting the unit by following the instructions in the “How to reset Daikin air conditioner” section.

Daikin AC remote not working and how to reset daikin AC remote

Your first port of call is to change the batteries. If this doesn’t work, you can try resetting the remote by doing the following:

  1. Hold down the on/off button on the remote for two seconds
  2. Press the on/off button to turn it on

If this fails, you may need to replace the remote.

Remote control display is faded

This is caused by low batteries. Replace the batteries in your remote to fix this issue.

Daikin air conditioner not responding to remote control

There’s a few things to check here:

  1. Change the remote control’s batteries and try again.
  2. Reset the remote using the instructions in the “Daikin AC remote not working” section.
  3. Reset the system by following the instructions in the “How to reset Daikin air conditioner” section.
  4. Check that the air conditioner’s sensor isn’t blocked by anything

How to reset Daikin air conditioner

You can reset your Daikin air conditioner by turning off the switch breaker in your electrical box. Turn this off for a couple of minutes, turn it back on again, and then turn on your air conditioner.

If the unit fails to turn on, you’ll need to contact a professional.

Why does my Daikin keep turning off?

If your Daikin air conditioner keeps turning off and off, it’s called “short cycling.” This can be caused by a number of issues:

  • Dirty air filters—you can try cleaning these to see if it fixes the issue.
  • Dirty condenser coils—these need to be cleaned by a professional.
  • A refrigerant leak—refrigerant can be dangerous when inhaled, so you should call a professional ASAP.

If cleaning the air filters doesn’t do the trick, we recommend calling a technician as soon as possible to reduce the health risk.

Daikin heat pump troubleshooting

Heat pump issues can vary depending on the season. If you’re having issues in summer, you can try to clean the air filter to see if it fixes the problem. The other bigger issues are dirty condenser coils and a potential refrigerant leak, both of which require a technician to fix (especially the refrigerant leak, which can be dangerous).

If you’re having issues in winter, this might be caused by faulty relays, sensors, valves, a damaged outdoor fan, or leaking refrigerant. Again, all of these problems must be addressed by a trained professional as soon as possible.

Daikin zone controller not working

There isn’t much you can do here, unfortunately, aside from contacting a professional to take a look.

Daikin air conditioner opens and closes

If the unit’s louvres open and then close again, there’s a couple of likely culprits:

  • You have multiple split systems in different modes—if you have one unit in cooling mode and another in heating mode, the air conditioner may open and close again repeatedly. A multi-split system uses a single refrigeration system, so if you’re running multiple units, they must be in the same mode.
  • The filters need to be cleaned—if a green light is flashing at the same time, your filters need to be cleaned.

Strange Daikin AC noise

If the unit is producing an odd noise, turn off the unit and the system’s circuit breaker, then contact a technician.

Why is my air conditioner blowing hot air?

Check out this article on how to fix this issue.

How to turn on Daikin air conditioner

To turn on your Daikin air conditioner, press the on/off button on your remote. If this isn’t working, you can reset the remote by holding the on/off button for two seconds, and then pressing it again afterwards.

If your remote is busted, you can turn the air conditioner on manually by pressing the on/off button on the main unit. If this doesn’t work, you may have a power issue. Check that the circuit breaker is on in your electrical box.

Cover image from Daikin

Why Won't My Daikin Ac Turn On?

There are a few reasons your Daikin AC may not be turning on. The most common reason is that the AC is not receiving power. Check to make sure that the AC unit is plugged into an outlet and that the outlet has power.

If the outlet is not receiving power, check the circuit breaker to see if it has tripped. If the circuit breaker has tripped, reset it and try again. The AC may not be on if it doesn’t turn on.

If your Daikin AC doesn’t turn on, there are a few possible explanations.

First, check to make sure that the unit is plugged in and that the circuit breaker has not been tripped. If the unit is plugged in and the breaker is fine, the issue may be with the thermostat.

Make sure the thermostat is set to “cool” and that the temperature is below the room temperature. If the thermostat is determining wrong, the problem may be with the air conditioner. Check for any loose wires and make sure that the AC is receiving power from the breaker.

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Daikin ac not working light blinking

If you have a Daikin air conditioner that is not working and the light is blinking, there are a few things you can try to fix the issue. First, check to make sure that the air conditioner is properly plugged into an outlet. If it is, then check to see if the circuit breaker has been tripped.

If it has, simply reset it and see if that fixes the issue. If the air conditioner still isn’t working, then you may need to call a professional to take a look at it.

Daikin ac reset button

If your Daikin air conditioner isn’t working properly, you may need to reset it. To do this, you’ll need to press the reset button. This button is usually located on the back of the unit, near the bottom.

Once you’ve located the reset button, press and hold it for about five seconds. If the unit doesn’t reset, try again. If it still doesn’t work, contact a Daikin dealer or service center for assistance.

Daikin ac not responding to remote

If your Daikin air conditioner isn’t responding to your remote, there are a few possible explanations. First, check to make sure that the batteries in your remote are fresh. If they are, and your AC still isn’t responding, try resetting your AC by turning it off at the thermostat, then turning it back on.

If that doesn’t work, try unplugging your AC unit for a few minutes, then plugging it back in. There may be an issue with the AC unit itself if it’s still not responding to your remote after trying these tips.

Daikin aircon blinking green light

If you have a Daikin air conditioner, you may have noticed that the green light is blinking. This is normal and indicates that the air conditioner is in standby mode. The green light will blink when the air conditioner is turned off and will stay lit when the air conditioner is turned on.

If the green light is blinking and the air conditioner is not working, there may be a problem with the air conditioner.

Daikin orange light on

If you see the orange light on your Daikin AC, it means that your AC is in standby mode. In this mode, the AC will not cool or heat your home, but it will still use a small amount of electricity to power the fan and other components. You can put your AC in standby mode by pressing the power button on the remote control.

Daikin troubleshooting guide

There are a few things you can do if your Daikin air conditioner is malfunctioning.

First, check to make sure that the air filter is clean and that all the air vents are clear. If the problem persists, consult the Daikin troubleshooting guide below.

If your air conditioner is not cooling properly, the first thing to check is the thermostat setting. Make sure that it is set to “cool” and that the temperature is set lower than the current room temperature.

Clean or replace the air filter if necessary is the problem persists. The thermostat is the first thing to check if your air conditioner is not heating up. Make sure that it is set to “heat” and that the temperature is set higher than the current room temperature. If the problem persists, check the air filter and clean or replace it if necessary.

The fan belt is the first thing to check if your air conditioner is making strange noises. Make sure that it is tight and not slipping. If the problem persists, consult the Daikin troubleshooting guide for further instructions.

If your air conditioner is leaking water, the first thing to check is the condensate drain. Make sure that it is clear and not clogged. If the problem persists, consult the Daikin troubleshooting guide for further instructions.

Daikin air conditioner

If you’re looking for a top-of-the-line air conditioner, you may want to consider a Daikin. Daikin is a Japanese company that’s been in business for over 90 years, and they’ve become a world leader in air conditioning. There are many reasons to choose a Daikin air conditioner.

They’re known for their quality, durability, and energy efficiency. Daikin air conditioners are also very quiet, so you won’t have to worry about them disturbing your peace and quiet. One of the best things about Daikin air conditioners is that they come with a wide range of features to choose from.

You can get air conditioners with different capacities, so you can find one that’s perfect for your needs. You can also choose from a variety of different cooling and heating functions.

If you’re looking for an air conditioner that will keep you cool and comfortable all summer long, a Daikin is a great choice.

Daikin inverter ac outdoor unit fan not working

If your Daikin inverter AC outdoor unit’s fan isn’t working, there are a few possible causes. First, check to see if the fan blades are obstructed. If they are, simply clear the obstruction and the fan should start working again.

Another possible cause is that the fan motor itself may be faulty. If this is the case, you’ll need to contact a qualified technician to replace the motor. Finally, it’s also possible that there is an issue with the AC unit’s inverter board.

If this is the case, you’ll need to contact Daikin directly for assistance. If you’re having trouble with your Daikin inverter AC unit, don’t hesitate to contact customer support for assistance.

Credit: www.fixya.com

What to do when Daikin AC stops working?

When your Daikin AC stops working, there are a few things you can do to troubleshoot the issue. First, check to see if the AC is receiving power. If the AC is plugged into an outlet, check to see if the outlet is working by plugging in another appliance.

If the outlet is working, check the circuit breaker or fuse box to see if the AC circuit has been tripped. You can either reset the breaker or replace the fuse if the circuit has tripped. If the AC is receiving power and the circuit is not tripped, check the thermostat to see if it is set to the correct temperature.

The AC unit should be running if the thermostat is set correctly. If the compressor is not running, check to see if the AC unit is frozen.

Once the unit is thawed, turn the AC back on. If the compressor is running but the AC unit is not cooling, check the air filters. If the air filters are dirty, replace them.

You can check the air filters if they are clean. To clean the coils if they are dirty, use a solution of water and vinegar. Check the refrigerant level if the coils are clean.

Where is the Daikin reset button?

If your Daikin air conditioner isn’t working properly, you may need to reset it. The reset button is usually located on the control panel, but it can also be located on the back or side of the unit. To reset your air conditioner, simply press and hold the reset button for 3-5 seconds.

What to check if AC is not turning on

If your AC is not turning on, the first thing you should check is whether or not the unit is receiving power.

Make sure that the power cord is plugged in securely and that the circuit breaker is not tripped. If the unit is still not receiving power, you may need to call an electrician to check the wiring.

Once you have confirmed that the AC unit is receiving power, the next thing to check is the thermostat. Make sure that the thermostat is set to the correct temperature and that the mode is set to “cool.” If the thermostat is set correctly and the air conditioning unit still isn’t turning on, you may need to replace the thermostat.

If the AC unit is receiving power and the thermostat is set correctly, the next thing to check is the condenser. The condenser is external to the unit and may cover in leaves. Clean the condenser coils and make sure that there is nothing blocking the airflow.

How do I turn on my Daikin air conditioner?

Assuming you would like a blog post discussing how to operate a Daikin air conditioner: “How do I turn on my Daikin air conditioner?” If you have a Daikin air conditioner, you may be wondering how to turn it on. Fortunately, it’s a pretty simple process.

Here’s a step-by-step guide on how to do it:

1. First, make sure that your air conditioner is properly plugged into an outlet.

2. Once it’s plugged in, take a look at the control panel. There should be a power button that you can press to turn on the unit.

3. Once the unit is turned on, you can adjust the settings to your desired level of comfort.

That’s all there is to it! Turning on your Daikin air conditioner is a breeze. Just make sure that it’s properly plugged in and then press the power button.

Once it’s on, you can adjust the settings to suit your needs.

How to fault find a Daikin Air Conditioner, troubleshoot split system, green flashing light


Your Daikin air conditioner won’t turn on because the power is off, the circuit breaker is tripped, or there’s a problem with the remote control. Check the power first, then the circuit breaker, and finally the remote control. If the power is off, turn it on at the switch or circuit breaker.

Try again if the circuit breaker is tripped. If the remote control isn’t working, replace the batteries and try again.

troubleshooting and troubleshooting

Air conditioning is a complex unit, consisting of a large number of elements. Even the most advanced equipment, which includes the Daikin air conditioner, is not immune from the failure of any of them. In order to quickly identify the causes of malfunctions, manufacturers equip their models with self-diagnostic systems.

Through a combination of letters with numbers and light signals, "smart equipment" informs about all violations in its own work. The display system displays error codes for the Daikin air conditioner on the display of the control panel. In case of any malfunction, the corresponding signal starts flashing.

This article introduces the alphanumeric designations of breakdowns, their interpretation, causes and solutions.

Content of the article:

  • Self -diagnosis system
  • Classification of faults codes
  • common problems with air conditioning Daikin
    • Internal bloc errors
    • 9002 9002 9002 027

      All models of Daikin air conditioners are equipped with a self-diagnostic system. With its help, they themselves diagnose their condition, and then inform about the problems found. You can run this function in a special mode, but it also works automatically.

      Almost all failures can be found out by observing the indicators, and the mechanism of this process is very simple. In the normal state, the LEDs emit a uniform light. But as soon as a violation occurs, they begin to pulsate, followed by a repetition of flashes. An alphanumeric or letter combination appears on the remote control display.

      Daikin's latest air conditioners are designed with the latest technology in mind. They have a stylish design, low noise level, undoubted quality. Models are economical and productive

      Having practiced in deciphering the coded information about breakdowns, you can understand that a home craftsman is quite capable of fixing some malfunctions on his own. If the failures are complex, then by telling the master the code, the user will speed up the repair process.

      Fault code classification

      The letter at the beginning of the code indicates the structural part in which the malfunction occurred:

      • failure in the indoor unit - "A", "C";
      • failure in the power unit - "E";
      • malfunctions of temperature sensors - "F";
      • eating problems - "N";
      • outdoor unit failure - "L";
      • Fan motors blocked, drain pumps or indoor unit electronic board defective - “P”;
      • system failures - "U", "M".

      Errors that are not critical and appear rarely are encrypted with a combination of numbers.

      Common Daikin Air Conditioner Problems

      Most problems with a Daikin air conditioner, especially its indoor unit, are not difficult. The errors shown on the display consist of a classification code (letter) and an error number (number), a number and a letter, in two letters.

      The remote control is designed to simplify and facilitate the operation of the air conditioner. There are such types of remote control as wireless infrared, wall wired

      Not only for different brands, but also for different lines, the codes are somewhat different. For this reason, you need to read the instructions. It presents the decoding of coded violations and methods for their elimination.

      Indoor unit errors

      When the general protection device is activated, code AO flashes. There are many reasons for this:

      • overheating;
      • failure of fans;
      • insufficient amount of refrigerant in the system;
      • debris in capillary tube, other.

      Among all the causes, the most difficult is the failure of the electronic part. To eliminate it, you need not only a professional tool, but also experience.

      A faulty printed circuit board indicates fault code A1 . As practice shows, the control board is often misdiagnosed. Therefore, before changing it, you need to check the components that most often fail - relays, capacitors.

      There are only five common causes of control board failure:

      • network voltage instability;
      • incorrect installation of interconnect cables;
      • natural wear and tear of individual elements of the board;
      • ingress of moisture, destructive mechanical effects;
      • non-compliance with the rules of operation.

      Often the air conditioner breaks down due to improper preparation for winter. When the device is de-energized, only the phase is turned off and zero is forgotten. In this case, the electronic board, provided that it is grounded to a common line, can disable welding work carried out in the neighborhood.

      If the air conditioner does not turn on, and all the LEDs on the indoor unit are blinking, then most likely this is a sign of a failure in the software settings of the board. There is only one way out - reprogramming by codes, which can only be performed at a service center

      Code A2 signals a blocking of the fan motor. When the self-diagnostic system displays a Daikin air conditioner trouble code indicating a fan motor failure, you should try turning the blades by hand. If there is no free rotation, the motor bearings are worn and the motor will need to be replaced.

      The fan motor activates the rotary switch. The contacts inside it corrode over time and stop passing electric current. To make sure that the rotary switch is not conducting electricity, you need to use a multimeter. If the continuity of the switch is confirmed, it must be replaced.

      An abnormal level in the drainage system is signaled by code A3 . Excess moisture due to improperly arranged can cause damage due to short circuit. In this case, disassembly of the indoor unit and a thorough cleaning of the drainage system will be required.

      If the fan blades turn freely when spinning, check the power input to the motor. After making sure that everything is in order with this, and the engine remains inoperative, they come to the conclusion that it is necessary to change the engine. This is caused by an error in the temperature sensor.

      You can check if this is true as follows:

      1. The temperature sensor is disconnected from the board.
      2. Check the resistance at the sensor using special equipment.
      3. The measurement result is compared with the specified values. At a temperature of +25⁰ on a working sensor, the resistance should be 10 kOhm. If the condition is violated, the sensor is definitely defective and must be replaced.
      4. If the measurements showed that the resistance of the sensor complies with the standards, it is installed in its place, connected to the board, and the unit itself to the network.
      5. Next, check the connector with a multimeter. If the voltage exceeds 4.9 V or is less than 0.5 V, the board must be changed.
      6. If the voltage on the connector is correct, the microprocessor is faulty and must be replaced.

      When the fan motor is overloaded, the self-diagnosis system issues error code A6 . The cause may be a disconnected or broken wire, a contact defect, or damage to the printed circuit board.

      If a motor replacement is required, first de-energize the system and remove the protective grille. After this, the fan mounts are unscrewed, the electric motor is disconnected and replaced with a new one

      Display error A7 indicates a malfunction of the shutter drive. It is possible that the motor valve is defective, you need to check the connections to make sure that nothing is preventing the movement of the shutters.

      The most common cause is a defective motor. In this case, simply replace it. There is also the possibility of microswitch failure, PCB failure, or connector connection defects.

      An error such as general overcurrent has code A8 . Since the starting current of the compressor motor is much higher than the operating current, the system issues a signal three seconds after the motor starts.

      Overloading can lead to a fire hazard, so the cause must be investigated immediately. This situation can be caused by a short circuit in the compressor itself.

      In this case, the system decides that there is a short circuit because the current rises to a significant amount. A short circuit can also occur outside the compressor - in the control board, at the terminals, in the supply wires.

      The cause of error A8 may be an excessive increase in pressure in the discharge system. An increase in this indicator can be provoked by errors made during refrigerant charging.

      Untimely cleaning of the heat exchanger gives the same result. Proper heat transfer can be hindered even by a thin film of grease on the surface of a visually clean heat exchanger.

      If a compressor current error occurs, it must be accessed. Next, the air conditioner is started in cooling mode. If the compressor could not be started, the compressor and the connecting wires “ring out”. Defective elements or the compressor itself are replaced

      Code A9 indicates a malfunction of the electronic expansion valve. Failure may occur due to mechanical contamination. To check its operation, turn the power off and then on again. Immediately after power is applied, the expansion valve must start to work within 30 seconds.

      In this interval, it is determined whether there is a voltage pulse of 12 V in the middle of the contacts of the expansion valve diode. The absence of a pulse indicates a breakdown of the control board.

      If there is no cold air, check the sensor for damage. You also need to ring the thermostat contacts with a multimeter at both the lowest and highest temperature limits

      If, when the indoor fan is running, the condenser fan stops, the compressor, expansion valve is turned off, take the following actions:

      • on the control board, disconnect the contacts of the electronic valve ;
      • check if there is a nominal voltage on the board.

      If the nominal voltage is present, this indicates a malfunction of the electronic expansion valve. Lack of voltage indicates a malfunction of the control board.

      The error codes of the indoor unit, marked with the symbol "C", are summarized in the table:0003

      Explanation of the error code consisting of ghost characters:

      There are times when an error spans several technical areas. Then the letter designation of the breakdown does not matter. The master should deal with it

      One of the most unpleasant malfunctions is the breakdown of the valves responsible for draining the liquid. It entails the complete replacement of unusable parts.

      Double character error code table allows the user to match the designations and quickly identify the source of the problem without much difficulty

      Before contacting the service center, you should turn off the household air conditioner for a while, then turn it on again. After restarting, the error may not appear. If the code flashes again, you cannot do without a wizard.

      Outdoor Unit Errors

      The instructions supplied with the air conditioner describe how to fix some of the problems. They can be implemented with individual malfunctions of the indoor unit. Outer side errors and system problems are more difficult, so it's best to contact the wizard.

      Winking of the EO code indicates that the general protection device has tripped. This means that the self-diagnosis device has detected some kind of anomaly.

      The operation may be disturbed for several reasons:

      • the input connection of the safety device is damaged;
      • seat belts are loose or broken;
      • shut-off valve installed in the closed position;
      • the refrigerant piping circuit is clogged;
      • external control board is defective;
      • an air short circuit has occurred.

      Error code E1 indicates that the printed circuit board of the split system control is faulty. When the power supply E2PROM is on, it does not work correctly.

      When the high pressure sensor (HPS) is triggered, error E3 appears. It occurs when the compressor is running when the high pressure switch is turned on.

      The processor of the control board contains the algorithm of the system. From here, the operation of all its elements is controlled, the information coming from the remote control and sensors is processed, signals are sent, the fan is started

      The failure may be caused by an excessively high level of pressure caused by a large amount of refrigerant or non-condensable gas.

      Other possible causes:

      • high pressure switch defective;
      • high pressure wire bundle disconnected or damaged;
      • loss of contact in the high pressure connector;
      • PCB damage;
      • damage to the circuit through which the refrigerant circulates;
      • clogged air filter of the indoor unit;
      • clogged outdoor heat exchanger;
      • Outdoor fan failure in cooling mode.

      When the low pressure sensor (LPS) is triggered, code E4 is displayed. The compressor is running at this time, and the error appears when the low pressure switch is activated. The reasons may lie in the faults of the coolant circuit, the low pressure switch may also be faulty.

      Low pressure wire connection may come loose or break. We can not exclude the possibility of a defect in the connector, printed circuit board. It is possible that the shut-off valve remains in the closed position.

      If the compressor motor is overloaded, the system signals error E5 . It indicates that the compressor for thermal protection is activated or the discharge pipe is too hot.

      A sign of a refrigerant leak is a greasy film on the tubes at the fitting entry points and on the threaded fittings themselves. If this phenomenon is detected, and the compressor experiences short shutdowns, then the refrigerant is out of the system.

      The failure may be caused by a malfunction of the shut-off valve, lack of refrigerant, damage to the outdoor unit, malfunction of the 4-way valve or electronic expansion valve.

      Error E6 indicates that the compressor motor is blocked by increasing current.

      At this time, the current protection trips due to:

      • the high pressure level is too high;
      • voltage drop observed;
      • check valve does not open;
      • Compressor defective.

      Error E7 - the fan motor is blocked due to overcurrent. Failure may be due to a malfunction of the fan, disconnection from the fan motor or the circuit board of the wire bundle or connector. Perhaps it's just a bad contact or foreign objects stuck in the fan.

      With a general current overload, error E8 occurs. In this case, the input current of the inverter has a value of more than 28 A for 2.5 seconds. Among the reasons, one can note the failure of the compressor, a defect in the power transistor, the printed circuit board of both the outdoor and indoor units, and a short circuit.

      Error E9 - a signal that the electronic expansion valve is damaged. It appears when the circuit breaks.

      The source of error E9 may be a malfunction of the expansion valve or its disconnection, damage to the printed circuit board. The reason may be external - electrical noise

      Error code EA indicates the occurrence of an anomaly in the 4-way valve. Fault origin:

      • poor contact in the connector;
      • thermistor damaged;
      • outdoor unit is defective;
      • 4-wire valve winding is defective;
      • the 4-wire valve itself is faulty;
      • A foreign substance has mixed with the refrigerant.

      EC code refers to an abnormal water temperature due to a malfunction of the outdoor unit or thermistor. On error EJ Additional protection is triggered. EE - Abnormal moisture level in the drainage system. EF - The heat storage unit is damaged.

      All errors related to power problems go under the code "H" . NO - general sensor defect, indicates a failure of the compressor sensor system. This may be due to faulty connections or the circuit board. H1 - failure of the air temperature sensor. This may be due to a faulty damper or limit switch.

      H2 - system power sensor is defective. H3 - a defect in the high pressure sensor. An error occurs due to high pressure switch failure, wire bundle disconnection, board failure, connector failure.

      H4 - low pressure sensor defect. You need to make sure it is connected. If yes, then the switch must be checked for integrity. H5 - the compressor does not work, because. overload sensor has tripped. Here you need to look for a defect in the connector or in the compressor motor overload thermistor.

      Sensors are devices that allow the unit to operate automatically. They are designed to measure specific technological parameters

      H6 - compressor overload. The compressor itself or the outdoor unit may be faulty. Abnormal input voltage or a closed check valve can also cause failure.

      H7 - the fan is overloaded. Probable Causes: Circuit failure, connector coming out. When the input voltage sensor is triggered, an error will be signaled under code H8 . Here, the power transistor, gearbox or outdoor unit is presumably faulty. Possibly faulty internal wiring.

      H9 - not everything is in order with the outdoor temperature sensor. Indicates that the thermostat resistance has exceeded the range of 60-600 kΩ. The external thermistor, thermistor connector, printed circuit board may be faulty. Changes in the resistance of the thermistor are inversely proportional to changes in temperature readings. Thermistor failure is determined using a multimeter.

      If the codes F0 , F1 , F2 appear, then the protections have worked. In the first case, No. 1 and 2, in the second - No. 1, in the third - No. 3. F3 appears when the discharge pipe temperature is high.

      It can be caused by:

      • inappropriate coolant volume;
      • blockage ;
      • low drain temperature;
      • thermistor holder outlet;
      • by disconnecting the expansion valve coil from its body.

      Error F6 - exceeding the nominal value of the heat exchanger temperature. Such a failure is caused by clogging of the filter, heat exchanger, fan malfunction, excess amount of refrigerant, inability to open the shut-off valve.

      Thermistor - the same thermistor, but with a negative temperature coefficient of resistance (TCR). Metal oxides, ceramics, sometimes even diamond crystals are used for manufacturing

      The code J0 indicates a malfunction of the thermistor. J1, 2, 3 - pressure, current, temperature sensors, respectively. J4 is a signal of a sensor defect in the low pressure saturation zone. J5, 6, 7, 8, 9 Suction pipe thermistor malfunction, heat exchanger 1 and 2, liquid pipe and gas respectively.

      Error codes "L" indicate problems in the inverter system. This can be either the activation of protection devices that turn off the inverter, or transmission errors between the outdoor board and the inverter board. The same effect is produced by a defect in the printed circuit board, a malfunction of the power supply unit. You should try to reboot the system.

      If there is a lack of coolant, error P0 will be displayed. Flashing code P1 indicates an imbalance in the power supply due to a voltage mismatch between the phases. This may also be due to a defect in the main circuit capacitor, a malfunction of the magnetic relay, or improper wiring of the main circuit.

      If the temperature inside the control unit rises, code P3 will report this. This is due to a defective thermistor or printed circuit board. You need to measure the resistance. P4, 5, 6 - errors indicating a breakdown of sensors - power transistor, direct current, output current sensor. P7 indicates a high output current.

      Conclusions and useful video on the topic

      The following video will demonstrate the process of identifying and eliminating one of the common air conditioner errors: allows you to quickly identify any malfunction. This helps to eliminate errors in operation until the equipment completely fails.

      The user must not only decipher the codes, but also periodically clean the air conditioner. If malfunctions are detected, repairs, depending on the complexity, can be performed on site or in a service environment.

      In the block below you can leave a comment with your own impressions of the Daikin air conditioner. Share useful information on the topic of the article, tell us about how the error was determined by the coded designation. Ask questions and post pictures.

      and how to fix them. Master cases

      • home
      • Types of Faults
      • Long time out of service
      • Not open after winter
      • Weak cooling
      • Stops cooling
      • Blows warm air
      • Weakly blowing
      • Works in jerks
      • Stopped blowing
      • Blinds don't move
      • Water flowing into the room
      • Bad smell
      • Smell of burnt wiring
      • freon left
      • The air conditioner is buzzing
      • Condensation builds up
      • covered with frost
      • Not warm
      • extraneous noise
      • Bubbling when off
      • Buzzing when off
      • Cracks while working
      • Noisy indoor unit
      • Noisy indoor fan
      • Noisy drain pump
      • Noisy when turned on
      • Hissing and gurgling when turned on
      • Pressure sensor not working
      • Daikin's mistakes
      • Depressurization of the freon circuit
      • Mold and fungus on the evaporator
      • Noisy outdoor unit
      • Noisy outdoor unit fan
      • The compressor is buzzing
      • Takes a long time to turn on
      • Doesn't respond to remote
      • Daikin won't turn on
      • Daikin errors on scoreboard
      • Turns off by itself
      • Outdoor unit does not work
      • Outdoor unit fan does not work
      • Compressor does not start
      • Outdoor unit does not turn off
      • Freezing of the indoor unit
      • Freezing of the outdoor unit
      • Frost on rollers

      List of popular calls and solutions

      from Daikin service technicians

      "Faucet" on the Daikin control panel

      When it is time to clean the filter or element, one of the following messages may appear at the bottom of the screen:
      Clean filter
      - Clean filter and element
      - Clean element
      - Designation "faucet"
      Reset filter sign after flushing, cleaning or replacing the filter or element.
      An alert is issued after the hours recommended by the manufacturer.

      Daikin FTXB 25

      Frost on rolling joints

      Causes of freezing of a thin "liquid" pipe include: the valve is closed
      - contamination
      - breakage of the expansion valve or ERV coils.

      Dirty Daikin indoor fan

      Comprehensive service required with complete disassembly of the indoor unit

      Operates but does not cool. Blows like a fan

      - Wrong temperature setting/mode

      - Blocked air filter due to clogging and no air flow
      - Freon leak
      - Insufficient power supply
      - Refrigerant piping too long
      - Incorrect piping length setting
      - defective local pipeline (compressed, etc.)

      Error on Daikin controller

      Detailed description of each error code - see Daikin error

      Outdoor unit clogged with dirt

      Service required for Daikin outdoor unit with Kärcher pressure washer

      Daikin URURU SARARA front cover drive motor replacement0003

      Daikin indoor unit cleaning and disinfection

      Replacement coils for Daikin expansion valves

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