Eversys Coffee Machine Error Code S-105: Rinse Necessary

What does Eversys error code S-105 mean?

S-105 is a start-up prompt on the Eversys Cameo. The screen reads "Rinse necessary," and the e'Support table explains why: the steam boiler is not allowed to heat before the machine is rinsed. After the machine is switched on, the boiler waits until the rinse button is pressed, and only then may it begin heating. The control is making sure the rinse has happened before heating starts. The listed action is to press the rinse button in the upper right corner. No causes are listed because nothing is wrong; the prompt is a built-in step after every power-on. The table does not state what the rinse does, how long it runs, or whether the prompt can come at other times, so we do not say more. What follows from it is a plain operating point: if staff switch the machine on and walk away, the boiler never heats and no steam is available, and S-105 is the reason. Pressing the rinse button once starts the sequence.

Affected models and control systems

Eversys Cameo range (Cameo/Core, Classic, ST and in-box versions). The message is listed in Eversys' e'Support table of operator stop messages for Cameo, and the table gives no board revision or model limit.

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

• The screen shows "Rinse necessary."
• No steam or heat-up happens after power-on
• The rinse button in the upper right corner is waiting to be pressed

Possible causes

Likely causes — what usually sits behind error code S-105 on this control. A technician confirms which one it is before any part is replaced.

• Machine was just switched on and the steam boiler is waiting for the rinse button before it may heat
• Machine was powered off and on during the day, for instance after S-101, so the rinse is asked for again
• Staff switch on early and do not return to press the button, so the boiler stays cold
• A power cut or switch-off at the wall resets the machine and the prompt returns

Safe checks before calling for service

How a technician diagnoses error code S-105

1. Confirm S-105 against the Cameo table and ask about the last power-on.
2. Press the rinse button and watch the sequence start and finish.
3. Check that the message clears and the boiler begins heating.
4. Check the touch input in the upper right corner if the button does not respond.
5. Review power supply stability if the machine keeps resetting.

How error code S-105 differs from similar codes

S-105 is part of the start-up chain. S-106 (initializing) usually comes first and S-105 asks for the rinse that lets the boiler heat.

Technical reference

Document

Operator stop messages for Cameo (S-XXX)

Models / control

Eversys Cameo range (Cameo/Core, Classic, ST, in-box), e'Support article

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.