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Troubleshooting
Abnormal condition
Error on indoor temperature sensor (Short or Open)
1. Error on Eva-in sensor (Short or Open)
2. Error on Eva-out sensor (Short or Open)
3. Discharge sensor error (Short or Open)
Indoor fan error
1. Error on outdoor temperature sensor (Short or Open)
2. Error on cond sensor
3. Error on discharge sensor
Other outdoor unit sensor error that is not on the above list
for 2 minutes
2. Communication error received from the outdoor unit
3. 3 miniute tracking error on outdoor unit
4. Communication error after tracking due to unmatching number of
installed units
5. Error due to repeated communication address
6. Communication address not confirmed
Other outdoor unit communication error that is not on the above list
Self diagnosis error display
1. Error due to opened EEV (2nd detection)
2. Error due to closed EEV (2nd detection)
3. Eva in sensor is detached
4. Eva out sensor is detached
5. Thermal fuse error (Open)
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
Operation Defrost
Error code
E121
X
X
E122
E123
X
E126
E154
X
X
E221
E237
X
E251
E101
E102
E202
X
X
E201
E108
E109
E151
E152
E128
E129
E198
E241
E554
X
X
E450
E451
E416
E559
E425
E403
E301
LED Display
Timer
Fan
Filter
X
X
X
X
X
X
X
X
X
English
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