Inverter Mini Split AC Circuit Board Half Display & E0 Error Repair

In this video, we’ll guide you through repairing a circuit board with a half display and an E0 error on your mini split AC unit. It can be frustrating and confusing when your mini split Air conditioner circuit board displays only half of the information or shows an E0 error. But fear not! We’re here to help you diagnose and fix the problem step by step. Throughout the video, we’ll explain the possible causes behind the half display and E0 error, such as loose connections, faulty components, or power supply issues. We’ll show you how to safely access the circuit board and perform a thorough inspection to identify the root cause. Once we’ve identified the problem, we’ll guide you through the repair process. Whether it’s reseating connectors, replacing faulty components, or troubleshooting power supply problems, we’ll provide clear instructions and tips to ensure a successful repair. Safety is paramount when working with electrical components, so we’ll emphasize the importance of turning off the power and taking necessary precautions throughout the video. By the end of this tutorial, you’ll have the knowledge and confidence to fix the half display and E0 error on your mini split AC circuit board, saving you time and money on professional repairs.

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#repair #ac #airconditioner #circuit #controlboard #electronics #display

I have this circuit board of an indoor mini split  air conditioning unit, and it is an inverter board.   The display of this circuit board is problematic. Sometimes it shows the display half, and sometimes   it shows fine, and I don’t understand what is going  on. So let’s check what the fault is in it.

Some other technicians have soldered these points on  the board and tried to repair it, but he has not   been able to fix the problem. All the transistors  and the Diodes, other than these ULN-2003 Darlington IC’s were been removed and then installed back in the circuit board. So let’s see whether we can fix it .

I have power on the circuit board, the display of  this circuit is flashing something like this. The   half digits on the display is turning on, the Run  light on the display board is flashing one time.   sometimes the display shows the complete digits  as well. I have powered off the circuit board from electricity. 

It is not showing the actual error on  the circuit board I have tried many times. I will   plug the electric plug and check what does it do  now. The display is not showing at all. I’m shaking   the connector and then it shows the completed  digits on the display. The wire connections of  

The connector are loose. It is showing an e0 error  code. I will explain to you why this e0 error code   is showing on the display, and how will we Rectify  this problem. I have installed the display circuit  

On the top cover of the mini split. The e0 error  is shown on the display. Run is written here.  The run light is flashing one time. Now I will try  to figure out what this error means. This mini  

Split air conditioner is of in an unknown brand  but I know that this circuit board is from Midea   company, they manufacture air conditioning as well  as circuit boards, this error means when this IC   in the circuit board goes bad. There is a short  circuit or the voltages do not pass through it  

The circuit board will show the e0 error on  the display. This IC is the eeprom of this circuit board   Known as electrically erasable read-only memory, when the circuit board is powered on   and the electricity is passed through it; the  program is stored in this IC. In simple words  

The program or function as a user you are using  is stored in the memory of this IC. When you   turn on the circuit board eeprom shares it with the  microcontroller and the same program you had set  

Is automatically turned on. Any changes you make in  the settings of your air conditioner are stored in   this eeprom memory. This is how the eeprom works in the  circuit board of the air conditioner. I will tell  

You about its pin configuration, you can see the  pin configuration of the IC by pausing the video   the eeprom should have a minimum of 2.5 to 5.5 volts  maximum, then this eeprom will work well. Otherwise it will not.  

The PIN numbers 1, 2, 3, and four. The vss next is E2, then not not-connected pin, and again, the   not connected pin. All four pins are connected to  the ground, we should get a positive 5 volts on the  

VCC pin of this IC so that it may operate. If the  voltages are passing through the IC I will tell   you what to do later in the video. I have powered  on the circuit board, I will check the voltages  

On the 8 and one number pin of the IC. 5 volts are  passing through the IC, this means that this eeprom is   short-circuited, or the program has been corrupted.  I will reprogram the IC and install it back in the  

Circuit board. The circuit board has been fixed  now. I will pass electricity through it to show you.   The display is also okay now. I have fixed the  wires, when the circuit board was problematic its   own and this universal remote were not working  on this circuit board, I will turn it on with the  

Universal remote. It has turned on, the temperature  on the display is 17° and it is working in cool mode. Let Me Explain how I fixed it. See its blower  motor has started to work, this is its eeprom IC. When  

I installed this IC in the programmer it was not  able to detect this IC, which means that the IC   is short-circuited externally. This is why the  circuit board was not working. I already had the   program of this circuit board. I installed the  same program in a new IC and then installed it  

In the circuit board, the results are in front of  you that the circuit board has started to operate normally.  Click on the left or right thumbnail to watch the next videos and subscribe. Thank you