Mitsubishi Electric air conditioner error code 6607

If your Mitsubishi Electric air conditioner has a communication interruption somewhere in the system, this will cause a 6607 error code to display.

Air conditioners are extremely complex systems and there is a variety of issues that can occur within this system.

The 6607 error code which is displayed on Mitsubishi Electric air conditioners indicates that there is a communication error somewhere in the system, and the address of the error should tell you where.

Air conditioner errors

Air conditioners may be commonplace appliances, but they are still complex systems which combine the working of various components to cool down the air in a space.

Larger split and HVAC systems may even carry air over several feet between the components in the system, before carrying the cool air back again.

Although this enables these appliances to cool down large space quite effectively and efficiently, this does also mean that there are plenty of opportunities for things to go wrong somewhere within this complex system.

Mitsubishi Electric air conditioner error code 6607

It can be frustrating when your air conditioner is just not working the way that it is supposed to.

However, most of the modern air conditioners will display an error code which is supposed to give you some much needed information about the issue, including what and where it is.

If your Mitsubishi Electric air conditioner is displaying a 6607 error code, this signifies that there is a communications error within the system.

This means that the system has not received a response from a component or unit while the system was operational.

This usually happens when there is some kind of electrical error with your outdoor unit and unfortunately, it also means that it is one of the air conditioner errors that you may not always be able to find and fix on your own without the help of a professional.

The address underneath this error code should tell you exactly where the issue with the communication is, which should allow you to investigate. But it is most commonly caused by an electrical error in the PC box (if the address is 52).

Investigating this kind of 6607 error involves checking wires, checking voltages, or even resetting the entire system.

You may be able to do these things yourself if you are quite handy with electrical equipment, but if working with a voltmeter or possibly losing your air conditioner warranty makes you nervous, then it is best to contact a registered and knowledgeable HVAC technician for further assistance.

Of course, a good reset often clears these types of error codes and is a good troubleshooting solution for just about any issue.

What to do if your 6607 error is in the PC box

If your 6607 error is located in the PC box, your first step should be to check all of the wires on the box itself.

Any loose or damaged wires could be the root cause of your communication error and replacing these wires should be a relatively easy fix.

It is also a good idea to check the size of the wires in your PC box and to check the voltages of the PCB board while you are at it, just to ensure that you are not missing any underlying issue.

What to do if your 6607 error is located somewhere else

Almost all of the error codes on the Mitsubishi electric air conditioners should be accompanied by a 3-digit address code. If this address code is not 52, you will still be able to investigate and possibly even fix the fault.

To do this, you will need to cross-reference the address code on the air conditioner with your owner’s manual.

Alternatively, write it down and give it to the professional who is assisting you, in order to find the root cause of the communications issue.

How to reset your Mitsubishi Electric air conditioner

Resetting an air conditioning system is a common troubleshooting step used to solve a variety of issues, including a communications issue like the ones that cause the 6607 error.

It is also a helpful way to clear an error which does not have a specific address to investigate or to get your air conditioning system back up and running once you have fixed the communications issue.

Fortunately, resetting a Mitsubishi Electric air conditioner is not very complicated and it is really harmless to the system, if you follow the correct order, which is outlined below:

  • Firstly: Turn off the indoor unit
  • Then: Turn off the outdoor unit
  • Lastly: Turn off the PC box if necessary for your system.

Repeat this process in reverse to switch the unit back on.

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