Error Code Table for QHD070 Whole-House Ducted DehumidifiersUpdated 10 days ago
This article provides an error code table for QHD070 Whole-House Ducted Dehumidifiers.
If multiple faults occur simultaneously, the codes will be displayed in order.
| Code | Description | System Response | Suggested Resolution |
| E0 | Communication failure | Alarm + Shutdown | Inspect the communication cable and reconnect or replace if necessary |
| E1 | Humidity sensor fault | Auto-switch to continuous Dehumidification mode | Confirm that the temperature and humidity sensors are securely connected. Reconnect or replace if necessary |
| E2 | Temperature sensor fault | Error display only | Confirm that the temperature sensor is securely connected. Reconnect or replace if necessary |
| E3 | Water reservoir full alarm | Enter Standby mode | Check for clogged drainage lines or repair/replace the water pump |
| E4 | Coil temperature sensor fault | Enter Standby mode | Confirm that the coil temperature sensor is securely connected. Reconnect or replace if necessary |