Answer:
A blinking operation light on your Fujitsu mini-split typically signals that the system has encountered an error or is undergoing a specific process like defrosting. In our experience, this often happens due to sensor issues, refrigerant levels being off, or problems with airflow. Sometimes, the blinking light is part of normal operations, such as during startup diagnostics or maintenance modes. We recommend first consulting the user manual to check what the blinking pattern means, as it’s often tied to a fault code. If the issue persists, it’s best to reach out to a certified HVAC technician.
More On: Why Is My Fujitsu Mini-Split Operation Light Blinking?
When your Fujitsu mini-split’s operation light starts blinking, it’s essentially trying to communicate a specific issue with the system. For example, a blinking pattern might indicate a blocked air filter, a frozen coil, or an outdoor unit problem. In our line of work, we often advise customers to take note of how many times the light blinks in sequence, as this can help diagnose the problem faster.
If the blinking occurs during cold weather, it could simply mean the unit is in defrost mode, which is normal and will resolve on its own. However, regular maintenance, such as cleaning filters and ensuring proper airflow, can help minimise unexpected blinking alerts. For issues that can’t be fixed through simple troubleshooting, we recommend turning the unit off to prevent further damage and calling a professional to inspect and repair it.
