If you own a Liliumfaucet sparkling water dispenser, you already know how convenient it is to enjoy fresh, carbonated water straight from your tap. However, sometimes you may see an E4 error code displayed on the system.
Don’t worry — this is not a major malfunction, but rather a protective signal that helps keep your machine safe.
In this post, we’ll explain what the E4 error means, the common causes, and the steps to fix it quickly.
What Does the E4 Error Mean?
The E4 error on your Liliumfaucet sparkling water dispenser indicates that the machine has entered a protection mode due to abnormal water flow or pressure conditions.
When the system detects low water flow or insufficient pressure, it automatically stops operating to prevent overheating or internal damage.
This feature ensures the long-term safety and durability of your sparkling water machine.
Common Causes of the E4 Error
Here are the most frequent reasons why the E4 error may occur:
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Low Inlet Water Flow
If the incoming water flow is too weak, the machine cannot generate sufficient carbonation, triggering the protection mode. -
Low Inlet Water Pressure
Insufficient water pressure (below 2.5 bar) prevents normal operation, which may cause the system to stop. -
Imbalance Between Water Intake and Output
When the machine dispenses more water than it receives — for example, during frequent use — it can overheat and automatically shut down. -
Poor Heat Dissipation
The machine needs proper ventilation. If it’s installed too close to the wall or inside a cabinet without space, heat may build up and cause the E4 warning.
How to Fix the E4 Error
Follow these simple steps to reset and restore your machine:
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Check the Inlet Flow and Water Pressure
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Ensure that your water pressure is stable (recommended: 2.5–5 bar).
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Inspect the inlet hose for kinks, blockages, or loose connections.
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Ensure Proper Ventilation
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Leave at least 10 cm (4 inches) of space behind the machine for air circulation.
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Avoid placing the unit in a tightly enclosed cabinet.
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Restart the Machine
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Once the flow and pressure are normal, turn the unit off and then back on to clear the error code.
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Still Seeing the E4 Code?
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Contact Liliumfaucet customer support with a brief description or photo/video of your setup — our technical team will help you troubleshoot further.
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How to Prevent the E4 Error in the Future
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Regularly clean or replace the inlet filter to prevent clogs.
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Maintain steady water pressure.
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Make sure the installation area is cool and well-ventilated.
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Avoid continuous long dispensing sessions without pauses.
By following these best practices, you’ll keep your sparkling water dispenser running smoothly and efficiently.
Conclusion
The E4 error on your Liliumfaucet sparkling water dispenser is simply a protective mechanism — not a major fault.
By ensuring proper water flow, pressure, and ventilation, you can easily reset your machine and enjoy your refreshing sparkling water again in no time.
If you continue to experience issues, please reach out to our support team — we’re always here to help.
