What does error code E3 mean on my DAITSU ADDH 12 dehumidifier?

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The E3 code is not documented in the official DAITSU ADDH 12 manual. However, on this model, display issues or malfunctions are generally related to water management.

Priority checks to perform:

Full tank: The fill indicator lights up when the tank reaches approximately 3.6 L (out of a total capacity of 4 L). Empty the tank and reinstall it correctly.
Tank installation: Ensure that the tank is properly clicked into place. Improper installation can trigger alerts.
Continuous drainage: If you are using the continuous drainage system (14 mm hose), check that the hose is not blocked and that the sealing gasket of the water trap is correctly positioned (the manual emphasizes that this gasket must be in place before operation).
Restart: Turn off the device, wait 30 seconds, then turn it back on.

If the problem persists after these checks, the E3 code may indicate a sensor or electronic malfunction that requires professional technical intervention. Contact DAITSU customer service with model number ADDH 12 for a complete diagnosis.

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