Fujitsu · Air to Water Heat Pumps
The LED on the outdoor unit flashes 15 times. This indicates a critical and persistent error during the compressor's startup sequence, resulting in a permanent system stoppage.
Click steps to track your progress.
Power cycle the heat pump system by turning off the main breaker for at least one minute, then restoring power.
Ensure stable and consistent power supply to the outdoor unit.
If the error persists, contact a qualified technician immediately, as this error often points to significant issues with the compressor or inverter system requiring specialized repair.