Panasonic air conditioner error code f90

When you purchase a Panasonic air conditioner, you expect to enjoy comfortable, reliable climate control. However, like all mechanical appliances, these systems are not immune to occasional glitches and hiccups. One of the error codes you may encounter with your Panasonic air conditioner is F90. This code, if not addressed promptly, could compromise the performance and longevity of your unit. In this article, we will guide you through the meaning of the F90 error code and how to troubleshoot it.

What Does Error Code F90 Mean?

The F90 error code on a Panasonic air conditioner is an indication of an issue with the unit’s refrigeration system. More specifically, this error code typically implies a problem with the compressor or its electrical components. When your air conditioner displays this error code, it means that the unit’s protective mechanisms have detected an abnormality that could potentially harm the system.

Although the F90 error code can seem daunting, understanding what it signifies and the common causes behind it is the first step in troubleshooting the issue.

Common Causes of Error Code F90

An F90 error code on a Panasonic air conditioner usually implies a malfunction within the compressor, but it can be traced back to several specific issues:

  1. Faulty Compressor: The compressor is the heart of your air conditioning system. If it malfunctions, the entire system’s operation could be disrupted. A fault in the compressor might cause it to overheat, leading to the F90 error code.
  2. Defective Electrical Components: If the electrical components connected to the compressor, such as wiring or capacitors, are faulty, the air conditioner might display an F90 error code. Over time, these components can wear out or become damaged, leading to electrical failures.
  3. Improper Refrigerant Levels: If the refrigerant level in your air conditioner is too high or too low, it can put undue stress on the compressor, potentially causing the F90 error code. A leak in the refrigerant lines might also be the culprit.

Troubleshooting Error Code F90

If your Panasonic air conditioner is displaying the F90 error code, there are several steps you can take to troubleshoot the issue:

  1. Check the Compressor: Begin by inspecting the compressor for any signs of damage or overheating. If you notice any anomalies, consider reaching out to a professional HVAC technician to evaluate the system.
  2. Inspect Electrical Components: Check the wires, connectors, and capacitors related to the compressor for any signs of wear and tear or damage. Replace any faulty components as necessary.
  3. Verify Refrigerant Levels: If the previous steps did not resolve the issue, check the refrigerant levels in your unit. If they are too high or too low, have a certified technician adjust them.

Remember, handling refrigerants should only be done by professionals due to the potential health and environmental risks involved.


The F90 error code on a Panasonic air conditioner should not be taken lightly. It is an indication of an underlying issue that requires attention. By understanding what this error code means and taking the appropriate steps to troubleshoot it, you can ensure the longevity of your Panasonic air conditioner. However, in any step of the process, if you feel unsure or overwhelmed, it is best to consult with a professional HVAC technician. They have the knowledge and expertise to safely and efficiently handle such issues, ensuring the comfort and reliability of your air conditioning system.