Eversys Coffee Machine Error Code E-105: Boiler Connector Missing

What does Eversys error code E-105 mean?

Before the control heats the steam boiler, it needs to know the boiler is actually wired to it. It looks for the boiler connector, and when that connection is not detected it refuses to heat and shows Steam boiler connector missing, which appears on the display as E-105. The rule makes sense: powering a heater that cannot be monitored would leave the boiler without its temperature and pressure feedback. The control therefore treats a missing connector as a reason to withhold heating rather than guess. What staff see is a loss of steam and often hot water. Nothing about the message says a part has burned out. A connector that has worked loose from repeated heat cycles, a damp or steam-coated contact, or a wiring break between the boiler and the board can all produce the same line on the display. A quick restart sometimes passes because the contact briefly makes again, which is why a clear after restart does not prove the problem is gone. The message is a connection check, so the connector and wiring are where a technician starts.

Affected models and control systems

This applies to Eversys Cameo and Enigma / Shotmaster machines that display E-xxx error messages. Machines on other message families or other Eversys generations may word boiler detection differently.

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 is dead
• Hot water is unavailable or limited
• E-105 appears right after power-up
• The message may disappear after a restart and come back later

Possible causes

Listed in Eversys's documentation

• Steam boiler connector loose or not seated
• Broken wiring to the boiler sensors and heater
• Failed board input for the steam boiler
• Moisture or steam residue on the connector

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

• Connector pins that have darkened from repeated heating and cooling
• A harness that was pulled slightly during a deep clean of the machine

Safe checks before calling for service

How a technician diagnoses error code E-105

1. Let the machine cool, then isolate power before touching any boiler wiring.
2. Inspect the boiler connector for seating, discoloration and residue.
3. Check continuity of the harness between the boiler and the board with a meter.
4. Verify the board input that detects the boiler is receiving its signal.
5. Clean or replace the connector and pins, and repair the harness if a break is found.
6. Power up, confirm E-105 is gone and that the boiler heats to normal pressure.

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.