Fujitsu ABHG54KRTA Service Manual page 72

Check point 5. Check the refrigerant amount
Check the refrigerant leakage.
Check point 6. Replace main PCB
If check point 1 to 5 do not improve the symptom, replace the main PCB.
2-31. E: A1. Discharge temperature error (Outdoor unit)
↓
↓
End
- (03-38) -
2. Troubleshooting with error code