Troubleshooting
4-38
Samsung Electronics
Condition of the indoor unit
Error code
Indoor unit display indications
Ice blue
Yellow
green
Blue
Red
Power reset (blinking once every 2 seconds)
N
O
ERROR
X
X
X
In the defrost operation (blinking once every 10 seconds)
N
O
ERROR
X
X
X
Open or short circuit error of the indoor-temperature sensor
E121
X
X
X
Open or short circuit error of the evaporator-in sensor
E122
X
X
Open or short circuit error of the evaporator-out sensor
E123
X
X
Error of the fan in the indoor unit
E154
X
X
X
1. Open or short circuit error of the outdoor-temperature sensor
E221
2. Open or short circuit error of the condenser sensor
E237
3. Open or short circuit error of the discharge sensor
E251
Errors of the sensors of the outdoor unit other than the errors listed above
1. Error due to the opened EEV (2nd detection)
E151
2. Error due to the closed EEV (2nd detection)
E152
3. The evaporator-in sensor is detached.
E128
4. The evaporator-out sensor is detached.
E129
5. The condenser mid sensor is detached.
E241
6. Refrigerant leakage (2nd detection)
E554
7. Abnormal high temperature on the condenser (2nd detection)
E554
8. Low pressure switch (2nd detection)
E451
9. Abnormal high temperature on the air discharged from the outdoor unit
(2nd detection)
E416
10. The indoor unit stops due to an unknown error of the outdoor unit.
E559
11. Error of detection of a reverse phase
E425
12. The compressor stops due to freeze detection (6th detection)
E403
13. The high pressure sensor is detached.
E301
14. The low pressure sensor is detached.
E306
15. Compression ratio error of the outdoor unit
E428
X
X
X
16. Outdoor sump down_1 prevention control
E413
17. Compressor shutdown due to the low-pressure-sensor prevention
control_1
E410
18. Simultaneous opening of the cooling and heating MCU SOL valves (1st
detection)
E180
19. Simultaneous opening of the cooling and heating MCU SOL valves (2nd
detection)
E181
Self-diagnosis errors other than the errors listed above
- 360 Cassette Type
