Daikin is one of the largest manufacturers of air conditioning systems in the world. They produce the highest quality products that are built to last. Daikin manufactures high quality products that are built to last. They have been manufacturing air conditioning systems since 1924, and they are constantly expanding their business to new markets.
Daikin manufactures and sells many different types of air conditioning systems. Some of the products that they manufacture are heat pumps and electric cooling systems. Daikin also has subsidiaries in the USA, Asia Pacific, and Singapore.
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On this page, you will find more information about the most common causes and most relevant solutions for the AC error 'AJ'. Do you need help straight away? Visit our support page.
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It has never been easier to solve error "AJ".
View list of solutions Contact an expertError information
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Category
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Error codeAJ
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ProductAC
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DeveloperDaikin
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First seenSeptember 10, 2021
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VerifiedYes
What causes the AJ error?
The Daikin documentation indicates that error code 'AJ' is caused by the following problem: "Malfunction of capacity setting (Indoor unit PCB)".
Do you think there is another cause for this error? Let others know in the comments.
How to solve Daikin AC error AJ
We've created a list of solutions which you can follow if you want to solve this AC problem yourself. Do you need more help? Visit our support page if you need professional support with AC right away.
Daikin solution
The capacity setting adaptor was not installed when replacing PCB. Defective indoor unit PCB.
Do you still have problems with this error? Try one of the quick fixes below or leave a comment.
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Verified solution
If you are having trouble using your air conditioner or any other electronic appliance, you will experience error code AJ on your device. There are several things that you can do in order to resolve this error.
Sometimes, when you do something wrong with your device, the power supply that you are using is not working properly. Sometimes, people will encounter this error when common hardware or software problems occur. When you receive an error code like this, try these solutions.
Error code AJ indicates that the set value has been incorrectly set. It may be that the controller used for setting the setting is not working properly. It means that the setting for the capacity or the address is faulty. Maybe the capacity setting adapter was not installed when you replaced the PCB or the system is defective.
If a breaker on a molded case or a circuit breaker that leaks earth causes the breaker to trip, do not reset it immediately. You may cause damage to the equipment. Do not just reset circuit breakers because doing this without checking the insulation may damage the equipment.
If the error code is still showing on the screen press and hold the on/off button for about 10 seconds. When it comes to reading the sensors, you need to press and hold the test button until the display changes to 10, then press and hold the test button again until the display shows that the sensor reading is complete.
If the error message on your screen is AJ, you can also try and contact your local Daikin dealer. You can try calling them on their customer support number or visiting their website. You will be asked to give the error code that is appearing on the screen. If they have found an error message, they will tell you what to do to fix the problem. They will also give you a second opinion on how to fix your problem.
Have you found a solution yourself, but it is not in the list? Share your solution in the comments below.
