Samsung Mini-Split Error Codes
Complete list of Samsung mini-split error codes with causes and how to fix them.
C1
🟢
Samsung Mini-Split error code C1: Indoor temperature sensor failure.
✓ DIY Possible
C1_OUTDOOR
🟢
Samsung Mini-Split error code C1_outdoor: Outdoor temperature sensor failure.
✓ DIY Possible
C2
🟢
Samsung Mini-Split error code C2: Indoor EVA IN sensor failure.
✓ DIY Possible
C3
🟢
Samsung Mini-Split error code C3: Indoor EVA OUT sensor failure.
✓ DIY Possible
C4
🟢
Samsung Mini-Split error code C4: Drain sensor failure.
✓ DIY Possible
C5
🟢
Samsung Mini-Split error code C5: Discharge sensor failure.
✓ DIY Possible
C9
🟡
Samsung Mini-Split error code C9: Indoor PCB failure.
Technician Required
E1
🔴
Samsung Mini-Split error code E1: High pressure protection.
Technician Required
E2
🔴
Samsung Mini-Split error code E2: Low pressure protection.
Technician Required
E3
🟡
Samsung Mini-Split error code E3: Compressor overload protection.
Technician Required
E4
🟡
Samsung Mini-Split error code E4: Discharge temperature protection.
Technician Required
E5
🟡
Samsung Mini-Split error code E5: Inverter compressor error.
Technician Required
E6
🟡
Samsung Mini-Split error code E6: Fan motor overcurrent.
Technician Required
E7
🔴
Samsung Mini-Split error code E7: DC link low voltage.
Technician Required
E8
🟡
Samsung Mini-Split error code E8: IPM overtemperature.
Technician Required
E9
🟡
Samsung Mini-Split error code E9: PFC overcurrent.
Technician Required
F1
🟡
Samsung Mini-Split error code F1: Main board communication error.
Technician Required
F2
🟡
Samsung Mini-Split error code F2: Inverter PCB failure.
Technician Required
F3
🟡
Samsung Mini-Split error code F3: Outdoor PCB failure.
Technician Required
L1
🔴
Samsung Mini-Split error code L1: Refrigerant leak detection.
Technician Required
L4
🟢
Samsung Mini-Split error code L4: Drain full — float switch activated.
✓ DIY Possible
L9
🟡
Samsung Mini-Split error code L9: Compressor startup failure.
Technician Required