Mitsubishi is one of the leading manufacturers of cars, ships and other industrial equipment. Mitsubishi Electric was founded in 1970 and is located in Tokyo, Japan. It is one of the most popular Japanese brands in the world and its products are well-known for being well-built and functional.
Mitsubishi also manufactures a variety of different products including cars, computers, appliances, and construction equipment. Not only that, Mitsubishi Electric manufactures a variety of different appliances including air conditioners, refrigerators, and dishwashers.
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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 'UF'. Do you need help straight away? Visit our support page.
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It has never been easier to solve error "UF".
View list of solutions Contact an expertError information
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Category
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Error codeUF
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ProductAC
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DeveloperMitsubishi
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First seenSeptember 6, 2021
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VerifiedYes
What causes the UF error?
The Mitsubishi documentation indicates that error code 'UF' is caused by the following problem: "Compressor overcurrent interruption (When compressor locked)".
Do you think there is another cause for this error? Let others know in the comments.
How to solve Mitsubishi AC error UF
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.
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Verified solution
You may be experiencing errors while using your Mitsubishi product or you may be receiving an error code UF while you are using your home appliances. When something goes wrong with your device or your power supply, this error can occur. Sometimes errors on other devices or server problems can cause the error.
If this error occurs, try a few different solutions to fix it.
Error codes commonly seen on Mitsubishi Electric ducted systems are the UF, UP or U6 error codes. This fault code is caused by a fault with the Power PCB, Compressor electrical circuit or Compressor bearings.
UF means that the compressor may cause a short circuit when the compressor is not working properly. It is abnormal if an overcurrent is detected on a DC bus or a compressor within 30 seconds after the compressor starts operating.
So, check that there is enough voltage at the outside unit, such as 240v or 415v. If the power feed to the unit/building is not correct, contact a qualified electrician or SA Power Networks to rectify the power supply. Check that all valves outside the unit are fully open. If the outdoor service valves are shut, try opening the valves again.
Check for damage to the power supply PCB. This could be caused by an animal or a lizard that has damaged the external power supply power PCB. If damage is found replace Power PCB and then try to re-start the unit. Check whether there is visible damage to the Power PCB or the wiring connecting the power supply and the compressor. If you notice any damage to your power supply, replace the damaged power supply cable.
Alternatively, you can try to contact Mitsubishi Customer Service to get more help on resolving this error. If you still experience this error code, you can contact them using their customer support number or through their website. If UF appears on your screen when you try to operate your appliance, you will need to send an email to the manufacturer stating the error code that you are experiencing. They will tell you what to do to resolve the issue and give you another solution.
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