40
Troubleshooting
Abnormal condition Error code
LED Display
1. COND mid sensor is detached E241
X X
2. Refrigerant leakage (2nd detection) E554
3. Abnomally high temperature on Cond (2nd detection) E450
4. Low pressure s/w (2nd detection) E451
5. Abnomally high temperature on discharged air on outdoor unit (2nd
detection)
E416
6. Indoor operation stop due to unconrmed error on outdoor unit E559
7. Error due to reverse phase detection E425
8. Comp stop due to freeze detection (6th detection) E403
9. High pressure sensor is detached E301
10. Low pressure sensor is detached E306
11. Outdoor unit copression ration error E428
12. Outdoor sump down_1 prevetion control E413
13. Compressor down due to low pressure sensor prevention control_1 E410
14. Simultaneous opening of cooling/heating MCU SOL valve (1st
detection)
E180
15. Simultaneous opening of cooling/heating MCU SOL valve (2nd
detection)
E181
Other outdoor unit self-diagnosis error that is not on the above list
Flowating s/w (2nd detection) E153
X X X
EEPROM error E162
EEPROM option error E163
Error due to incompatible indoor unit E164
X X X X
● On
Flickering
X O
• If you turn o the air conditioner when the LED is ickering, the LED is also turned o.
• If you re-operate the air conditioner, it operates normally at rst, then detect an error again.
• When E108 error occurs, change the address and reset the system.
Ex.) When address of the indoor unit #1 and #2 are set as 5, address of the indoor unit #1 will become 5 and indoor
unit #2 will display E108, A002.
NASA_Big Duct_AM@@@FNHDEH@_IM_03864A-05_EN.indd 40 2016-04-01 오후 5:29:52
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