Eversys Coffee Machine Error Code E-104: Steam Heating Timeout

What does Eversys error code E-104 mean?

The control gives the steam boiler a fixed amount of time to build pressure. After the machine starts it allows 20 minutes, and during normal operation it allows 10 minutes. If the pressure has not reached its nominal value when that time is up, the control stops waiting and puts E-104 on the display. The check exists because a boiler that heats too slowly is either not receiving power, is short of water, or is being read incorrectly, and the control cannot tell which from the front panel alone. While the message is showing, staff lose steam and sometimes hot water too. The manual places the cause on the heating side or in the pressure reading, so both have to be tested before anything is replaced. A heater that switches poorly and a pressure sensor that reads low look identical to the operator: steam simply never becomes available. Hard water adds a third possibility, because scale on the heating element slows the climb in pressure long before the element fails outright. The display text for this message is E-104.

Affected models and control systems

This applies to Eversys Cameo and Enigma / Shotmaster machines that show the E-xxx error messages. Other Eversys message families (S for stop, W for warning) mean different things.

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

• Steam wand gives no steam or only weak steam
• Hot water may also be limited
• E-104 stays on the display after start-up
• Steam pressure never seems to build

Possible causes

Listed in Eversys's documentation

• Steam boiler heater not heating or not switching on
• Steam pressure sensor reading low, or its wiring damaged
• Scale on the heating element in hard water
• Water level in the steam boiler too low

Other likely causes — what usually sits behind error code E-104 on this control. A technician confirms which one it is before any part is replaced.

• A tap that was shut after cleaning, leaving the boiler to refill slowly
• A heater relay that closes late, stretching the climb past the allowed time

Safe checks before calling for service

How a technician diagnoses error code E-104

1. Read the message history to see whether E-104 came at start-up (20 minute limit) or during service (10 minute limit).
2. Confirm water supply and boiler fill level before any electrical test.
3. Measure the heater element and its switching with a meter and check for supply at the right moment.
4. Compare actual boiler pressure on a gauge with the value the control reports.
5. Inspect the element for scale and descale or replace it as the readings dictate.
6. Replace the pressure sensor or heater only after the matching test fails.

Technical reference

Document

Eversys eSupport: Operator error messages for Cameo (E-XXX)

Models / control

Cameo and Enigma / Shotmaster (E-xxx error messages)

Section

Web page table of E-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.