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Appendix
If a problem occurs to the air conditioner, the following error codes will appear on the display of the indoor unit or outdoor unit.
Error detection and re-operation
• If an error occurs during operation, an error code will appear and all the operations are stopped except the display
panel.
• If you re-operate the air conditioner by a remote controller or switch, it will operate normally at first, then detect an
error.
Detected errors indicated on display
Error description Error code
Error on indoor room temperature sensor (Open/short) E121
1. Error on Eva-in sensor (Open/short) E122
2. Error on Eva-out sensor (Open/short) E123
3. Error on Indoor Fan E154
1. Error on outdoor temperature sensor E221
2. Error on cond sensor E237
3. Error on discharge sensor E251
Other outdoor unit sensor errors that are not on the above list
1. When there is no communication between the indoor and outdoor units for 2 minutes E101
2. Communication error received from the outdoor unit E102
3. 3 minute tracking error on outdoor unit E202
4. Communication error after tracking due to unmatching number of installed units E201
5. Error due to using the same communication address twice. E108
6. Error due to incomplete communication address setting E109
Other outdoor unit communication errors that are not on the above list
Self diagnosis error display
1. Error due to opened EEV (2nd detection) E151
2. Error due to closed EEV (2nd detection) E152
3. Eva in sensor is detached E128
4. Eva out sensor is detached E129
5. Thermal Fuse Open Error E198
Troublshooting
DB68-08953A-00_IM_DVM QMD_EU_EN_.indd 32 2020-02-10 오후 4:23:12
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