Mitsubishi Electric Air Conditioner Blinking Green Light-Causes and Solutions

Your AC has a number of light indicators. They blink for a specific purpose. Some users are worried if their Mitsubishi electric air conditioner keeps on blinking green light.

It becomes a cause of concern if the AC is not cooling or functioning properly. So, you need to know why the green light blinks. In this guide, you will also learn to fix the issue.

Once, I faced this issue with my Mitsubishi Electric AC. I was about to call a mechanic. But, then, I decided to apply some basic troubleshooting hacks. Fortunately, resetting worked for my AC.

Mitsubishi Electric Air Conditioner Blinking Green Light-Causes and Solutions

Why AC Green Light is Blinking Continuously?

There can be a number of causes for a blinking green light. If your AC is not cooling or working, then it is a matter of concern. Otherwise, you do not need to worry about it.

Cause #1. Automatic Protection Mode

Air conditioning units are equipped with an automatic protective mechanism. Any threat such as sudden power surge, overvoltage, or fluctuations can damage the units.

Therefore, the system shuts down itself. This response is automatic to protect the damage. So, the green light begins flashing as an indicator.

Cause #2. Multi-Split System

The multi-split system is another cause for a flashing green light. In this case, there is only one outdoor unit and multiple indoor units. All indoor units should be in the same settings.

Do not run one system on cooling and the other on heating mode. This will create an imbalance and the system will go into error mode.

Cause #3. Refrigerant

Low refrigerant levels or leakage also cause this issue. At this point, you need to call a technician for a professional inspection. He can fix the leakage and refill the refrigerant.

In addition, check the fan and make sure it is working properly. Nothing should be stuck in the fan. Moreover, check the power cord for any faults.

A Quick Fix for Mitsubishi Green Light

A quick way to solve the issue is to reset your Mitsubishi cooling system. Here is how to do it;

  1. Switch OFF the isolator. It is located next to the outdoor unit. This switch is used to cut off the power temporarily.
  2. Leave it turned OFF for a minimum of 30 seconds and maximum 10 minutes.
  3. Now, turn the isolator back again. This will reboot the system thus solving the issue.

Troubleshooting Mitsubishi Electric Air Conditioner

If the reset does not help, you can try other troubleshooting methods. Here are some of the solutions to try at home.

1. Clean the Air Filters

Dirty air filters prevent ventilation. Thus, your system cannot work properly. The blinking green light refers to such an issue. The simple solution is to clean the filters thoroughly.

  1. First, cut off the power supply to your Mitsubishi air conditioner.
  2. Remove filters from the AC unit. Wash them with running water.
  3. Use a vacuum cleaner to remove the excess dirt and debris.
  4. Let the filters dry completely. Reinstall them making sure that they are not wet.
  5. Now, turn ON your AC and check again.

2. Check the Fan and Compressor

Check the fan of the outdoor unit. Observe whether it is running or not. Further, remove if anything is blocking the fan. Another thing to check is the compressor.

Make sure it is working well. Also, listen to the noises from your AC. Any unusual noises indicate an issue in the internal machinery.

3. Power Cycle Your Mitsubishi AC

Another solution is to power cycle your cooling system. This time do it directly from the circuit breaker. Shut down the breaker to your Mitsubishi air conditioner.

Check if the breaker is tripped. Wait for a few moments before turning ON the breaker. Set the AC in auto mode for cooling or heating.

This will surely eliminate the problem. Moreover, plug the power adapter firmly into the wall outlet. Ensure that the unit is receiving adequate power and voltage supply.

4. Inspect the Connections

If the green light is blinking continuously, connection wires are defective. There are multiple wires to connect the indoor and outdoor AC units.

Inspect all these wires and look for any loose connection. Any of the wires may be broken or defective. Therefore, your Mitsubishi is flashing.

5. Seek Professional Assistance

Please call a professional and certified technician if the problems still exist. Because it can be an intricate issue such as a faulty control board or compressor.

Therefore, the basic troubleshooting hacks did not work. It is better to consult Mitsubishi for professional support.

FAQs Regarding Mitsubishi Electric AC

Here are further queries to help you fix your air conditioner at home.

Why 2 are green lights blinking on Mitsubishi mini split?

Double green lights blink when there is a fault in the gate switch. This switch is not fitted properly or its wires are faulty. Therefore, the AC cannot shut down completely and 2 green lights keep on blinking. You are suggested to consult a professional mechanic to fix the switch.

Where are the air filters located in my Mitsubishi Electric air conditioner?

The up-flow vertical system has air filters located at the bottom. While the down-flow vertical system has filters at the top. Lift the outer cover of the AC and remove the filters.

Where Mitsubishi air conditioners are manufactured?

Mitsubishi is a Japanese brand that manufactures high-quality air conditioners. They are produced and supplied by Mitsubishi Heavy Industries abbreviated as MACO. They are highly efficient and energy-saving cooling systems.

Should I keep my air conditioner on fan or Auto mode?

Ideally, AUTO mode is the best as it is energy efficient. The fan runs only when your turn ON the AC. So, in the summer season, it provides better dehumidification. Further, the excess ice from coils melts thus draining the water.

Why does the AC compressor fail?

A low level of refrigerant liquid in the AC causes compressor failure. Because it creates pressure and the compressor has to do extra work. Insufficient charge or leakage lower the amount of refrigerant.

Which is better, Mitsubishi or Daikin air conditioner?

In terms of reliability, Mitsubishi Aircon is a better choice. They are stylish, anti-corrosion, and environment-friendly. While Daikin Aircon gives further features. They are energy efficient and affordable. In fact, it offers a wide variety of high-quality options.

Also read: AC Compressor Not Turning On Best Solution

Concluding Words

So, in this guide, you have learned how to fix the Mitsubishi Electric air conditioner blinking green light. Try the basic fixes at home. If nothing works, kindly contact the company or a certified mechanic. Avoid opening the unit yourself.

The blinking indicates that there is something wrong with the device. You can only get through the solution when you know the cause. This is a complete guide that guides you to learn about the facts of Mitsubishi Electric Air Conditioner.

Hi, I'm Noor Alam, Founder of I'm naturally inclined towards modern technical gadgets and Love to solve different problems regarding these gadgets. I will share information with you on how to fix different old devices and how to find the best products. You'll find great help from my research and experience.
Hi, I'm Noor Alam, Founder of I'm naturally inclined towards modern technical gadgets and Love to solve different problems regarding these gadgets. I will share information with you on how to fix different old devices and how to find the best products. You'll find great help from my research and experience.

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