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Troubleshooting
Abnormal condition
1. COND mid sensor is detached
2. Refrigerant leakage (2nd detection)
3. Abnomally high temperature on Cond (2nd detection)
4. Low pressure s/w (2nd detection)
5. Abnomally high temperature on discharged air on outdoor unit (2nd
detection)
6. Indoor operation stop due to unconfirmed error on outdoor unit
7. Error due to reverse phase detection
8. Comp stop due to freeze detection (6th detection)
9. High pressure sensor is detached
10. Low pressure sensor is detached
11. Outdoor unit Compression ratio error
12. Outdoor sump down_1 prevention control
13. Compressor down due to low pressure sensor prevention control_1
14. Simultaneous opening of cooling/heating MCU SOL valve (1st
detection)
15. Simultaneous opening of cooling/heating MCU SOL valve (2nd
detection)
Other outdoor unit self-diagnosis error that is not on the above list
Floating Switch (2nd detection)
EEPROM error
EEPROM option error
Error due to incompatible indoor unit
MDS (Motion Detecting Sensor) Error
: On,
: Flickering, X : Off
• If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
• If you re-operate the air conditioner, it operates normally at first, 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.
38
English
Operation
Defrost
Error code
E241
E554
E450
E451
E416
X
E559
E425
E403
E301
E306
E428
E413
E410
X
E180
E181
E153
X
E162
E163
E164
LED Display
Timer
Filter
X
X
X
X
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