Panasonic · air conditioners Error codes
This error points to an issue within the refrigerant circuit, such as a freon leak or a closed service valve, which obstructs refrigerant flow.
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Ensure all service valves are fully open.
Check for signs of refrigerant leaks.
A professional may be needed to diagnose and fix refrigerant circuit issues.
Turn off the unit, unplug it, wait 30 seconds, and plug it back in to reset.