| Code | Error Description | Possible Cause |
|---|---|---|
| E1 | Water Inlet Error | Flow meter faulty, drain valve or pump failure |
| E3 | Abnormal Heating | Heater and temperature sensor faulty |
| E4 | Overflow or Water Tank | Floater in the tank |
| Ed | Abnormal Communication | Connection issue between main and sub PBA (Printed Circuit Board Assembly) |