Error and fault codes help a technician diagnose issues with the combination washer / dryer. If the unit is displaying an error, check the chart below for possible error code resolutions:
| Fault Code | Description/Reason | Solutions |
| Err1 | Door not closed |
Verify the door is closing properly and the latch is closing completely. Service may be required. |
| Err2 | Not draining |
Verify the drain pump filter is clear (accessible through door at bottom of unit). Also verify the drain hose is not pushed too far into the standpipe and is not kinked or crimped. |
| Err5 | Unit not sensing a full water fill | Make sure both water lines are connected, not kinked or cramped and the supply valves are turned on. Flood-safe inlet hoses should NOT be used - they restrict water flow. |
| Err7 | Service is required. | |
| Err8 | Service is required. | |
| Err9 | Service is required. | |
| E10 | Service is required. | |
| E13 | Caused by buildup of lint | Possibly be eliminated by washing and drying single dish towel or similar sized garment and adding a cup of white vinegar to the drum. White vinegar allows the fibers to break down, reducing lint in the unit. Also, make sure unit is connected to cold water properly. |
| E1 | Washer cannot drain the water within 4 minutes | Clear the pump. Service is required. |
| E2 | Cannot lock the door after 20 seconds | Service is required. |
| E4 | After 8 minutes, the selected water level has not been reached. | Check plumbing and water hose connections. Service is required. |
| E8 | Water level above the warning level | Service is required. |
| F7 | Motor circuit error | Service is required. |
| F9 | Dryer sensor circuit problem | Service is required. |
| FA | Water level sensor circuit problem | Service is required. |
| FC | No feedback signal from driver unit | Service is required. |
| Fd | Dryer heating is abnormal | Service is required. |
| FE | Dryer motor is abnormal | Service is required. |
| Unb | Unbalanced load | Spin unit on low speed and cancel drying. Evenly distribute clothing in the wash basket. |
Information can also be found in the Owner's Manual.
If you continue to have problems, service is recommended. To schedule a repair appointment for Haier branded appliances in the U.S., visit https://www.haierappliances.com/support/schedule-service or contact Haier Appliances at 1-877-337-3639.