If your TCL Dehumidifier is displaying an E3 Error Code, this indicates a low refrigerant issue. Follow these steps to troubleshoot the problem and determine if service is required.

General Troubleshooting Steps for E3 Error

Check Power Connection

• Are you using a power strip or surge protector? If so, plug the unit directly into a wall outlet.
• Unplug the unit from the outlet for 4 minutes to reset it.

Inspect the Drain Hose

• Make sure the hose is free from kinks, folds, or clogs.
• Verify that liquid can flow freely through the hose.

Adjust the Humidity Setting

• Change the humidity level to 40%.

Perform a Manual Reset

• Press and hold the FAN SPEED button and the TIMER button at the same time until the unit beeps 4 times.
• If the unit only beeps 2 times, repeat the process until you hear 4 beeps.

Test the unit

• Turn the unit back on and observe if the E3 Error persists.

Additional Steps for M Series Dehumidifiers

If you have a TCL M Series Dehumidifier, follow these additional troubleshooting steps:

Unplug the Unit

• Leave it unplugged for at least 3 minutes—this serves as a reset.

Inspect and Clean the Filter

• Remove the air filter and check for buildup.
• Clean the filter by vacuuming or rinsing with warm water and mild detergent if necessary.
• Let the filter dry completely before reinstalling.

Check the Coils for Dust or Debris

• While the filter is removed, inspect the coils on the rear of the unit.
• Gently vacuum the coils if dust, dirt, or hair buildup is present.

Reinstall the Air Filter

• If the filter was washed, ensure it is completely dry before putting it back in place.

Reset the Filter Indicator Light (If On)

• The filter LED is based on a timer, not actual dirt levels. Reset if needed.

Check Room Temperature

• Ensure the room temperature is above 41°F (5°C), as temperatures below this may trigger the E3 error.

Restart the Unit

• Plug the unit back in and power it on.
• If your dehumidifier has a pump, disable the pump function for troubleshooting.

Monitor for the E3 Error Code

• If the E3 error returns, the unit requires service.
• The issue could be due to a humidity sensor failure or a refrigerant issue, which requires professional inspection.

When to Contact TCL Support

If the E3 error persists after troubleshooting, the dehumidifier may require service or repair. Contact TCL Support for further assistance.