Fujitsu ASYG07KMCF Service Manual page 90

Check point 5. Check the refrigerant amount
Check the refrigerant leakage.
Check point 6. Replace the main PCB
If check point 1 to 5 do not improve the symptom, replace the main PCB.
2-24. E: A1. Discharge temperature error (Outdoor unit)
↓
↓
End
- (03-48) -
2. Troubleshooting with error code