If your dehumidifier displays an error code, don’t panic! These codes are designed to help you identify and resolve issues quickly. Below, we’ll break down the most common error codes and how to fix them.
HI Error Code – High Temperature
A HI error code means the room temperature is too high for the dehumidifier to operate (above 105°F).
How to Fix It:
Your dehumidifier won’t function in such high temperatures. You have two options:
1. Lower the room temperature manually
2. Wait for the temperature to naturally drop.
While the room is cooling down, unplug your dehumidifier. Once the temperature is within normal range, plug it in again and resume operation.
LO Error Code – Low Temperature
A LO error code indicates that the room temperature has dropped below the dehumidifier’s operating range (under 33°F).
How to Fix It:
To get your dehumidifier running again, you can do one of the following:
1. Increase the room temperature above 33°F.
2. Wait for the temperature to naturally rise.
Unplug your dehumidifier and wait until the temperature is within range, then plug it back in.
E1 Error Code – Humidity Sensor Issue
An E1 error code signals a problem with the humidity sensor.
How to Fix It:
- Check the sensor wire – Ensure it’s securely plugged into both the control board and the sensor.
- Replace the sensor – If the wire is connected but the error persists, you may need a new sensor.
- Contact technical support for assistance in diagnosing and replacing the sensor if necessary.
E4 Error Code – Pump Malfunction
An E4 error code means your dehumidifier’s pump is full of water and not working correctly. This typically occurs on models with built-in pumps (600c, 85c, and 120c) but can also appear on gravity drain models (NXT60, 85, and 120) if an external pump is connected.
How to Fix It:
- Check the pump connections – Ensure it's properly plugged into the control board and quick connects.
- Check the pump for buildup — If necessary, clean it to clear any blockages.
If the pump is properly connected, cleaned, and still not working, follow these steps to check for a faulty pump:
- Reset the unit – Unplug the dehumidifier for 2 minutes, then plug it back in. This should clear the error code.
- Observe the pump – Once the unit is powered back on, the pump should activate and drain any backed-up water.
- Repeat if needed – If the E4 error code reappears, unplug the unit for another 2 minutes, then restart it. This should resolve the issue.
By following these steps, you can quickly resolve error codes and keep your dehumidifier running efficiently. If you need further assistance, don’t hesitate to reach out to technical support!
