Eversys Coffee Machine Error Code S-030: Source Water Tank Empty

What does Eversys error code S-030 mean?

A Cameo can run from a refillable tank instead of a fixed water line. In that setup, a level sensor in the source tank tells the control how much water is left. When the tank runs low enough that the sensor reports it empty, the control stops every product that needs water and displays S-030. Pumping air through the system would damage the pump and spoil drinks, which is why the machine stops instead of trying to carry on. Refilling the tank clears the message in almost every case. A few other things matter. If the tank is not sitting properly or its connection is not seated, the water may not reach the machine even when the tank is full. A kinked hose between the tank and the machine can behave the same way. A tank that is full but still reads empty points to its level sensor, and the control has no way to tell a true empty tank from a sensor that reports empty. Plain clean water in the tank also keeps scale down in the boilers. The message on the display is S-030.

Affected models and control systems

This applies to the Eversys Cameo with S-xxx stop messages, on machines that run from a source water tank rather than a water line.

Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.

What you may notice

• Water-based drinks stop
• Stop message on the display
• Tank looks low or empty
• Message remains even with a freshly filled tank

Possible causes

Listed in Eversys's documentation

• Source tank has run out of water
• Tank not seated or connection loose
• Failed tank level sensor
• Kinked hose between tank and machine

Other likely causes — what usually sits behind error code S-030 on this control. A technician confirms which one it is before any part is replaced.

• A float or probe in the tank that has stuck from scale and reads empty
• A quick-connect fitting that has worn and lets air into the line

Safe checks before calling for service

How a technician diagnoses error code S-030

1. Confirm the tank is full and the machine is configured for a tank supply.
2. Inspect the connection and hose for air leaks and kinks.
3. Read the level sensor signal with the tank full and empty.
4. Check the pump for priming after the tank ran dry.
5. Replace the sensor or fitting that fails the test.

Technical reference

Document

Eversys eSupport: Operator stop messages for Cameo (S-XXX)

Models / control

Cameo (S-xxx stop messages)

Section

Web page table of S-numbers, Infos messages and Explanations / Remedies (no page numbers)

Checked

October 2026

We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.