Venta digital humidifier shows E8 and stops, often associated with very low or very high room humidity readings

Safety: Disconnect from power before opening the unit.

• Verify with external hygrometer: Place an independent hygrometer near the unit to compare readings. If the Venta display is far off, the sensor is likely out of calibration.
• Avoid chemicals: Do not use fragrances, essential oils, or chemical cleaners inside or near the air intake. These can permanently damage the RH sensor.
• Inspect sensor: Access the humidity sensor module and check for discoloration, residue, or corrosion. If present, the sensor should be replaced; do not attempt to wash it.
• Replace sensor: Install a new, Venta-compatible humidity sensor module. Ensure the part number matches the original to avoid calibration mismatch.
• Control board: If a correct new sensor still triggers E8, the calibration or ADC circuit on the main control PCB may be faulty and require replacement.