Eversys Coffee Machine Error Code S-034: Left Bean Hopper Too Low
S-034 means the left bean hopper is running low and left-side products are held. Refill or unlock the left bean hopper.
Medium: left-side products are held until the hopper is refilled or unlocked.
- Code
- S-034
- Maker
- Eversys
- Equipment
- Super-automatic coffee
- Applies to
- Eversys Cameo range (Cameo/Core, Classic, ST, in-box), e'Support article
What does Eversys error code S-034 mean?
S-034 is the stop-message version of the W-084 low-level warning. On the Cameo, a light barrier in each hopper looks for beans at the level where a refill is due. When the left barrier does not see beans, the control displays "Level of bean hopper left too low." as S-034. The maker's table says to refill or unlock the bean hopper and gives the reason: the light barrier of the bean level control has not detected beans in the left hopper. Since the entry sits in the stop list, drinks that need the left hopper wait for the operator. The word unlock suggests that a closed lock or slide also keeps beans from reaching the sensor, though the table does not elaborate.
Affected models and control systems
Eversys Cameo range (Cameo/Core, Classic, ST and in-box versions), as covered by the maker's e'Support table of S-number stop messages.
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
- S-034 on the screen
- Left-side drinks do not start
- The left hopper is nearly empty or its slide is shut
Possible causes
Likely causes — what usually sits behind error code S-034 on this control. A technician confirms which one it is before any part is replaced.
- Light barrier in the left bean hopper has not detected beans
- Beans bridged above the left light barrier so it looks empty
- Oily residue on the left barrier window
- A left hopper that is closed or not fully lowered
Safe checks before calling for service
- Refill the left bean hopper.
- If it has a lock or slide, open it.
- Make a left-side drink to check that the message is gone.
- If the hopper is full and the message stays, note that for the technician.
How a technician diagnoses error code S-034
- Check hopper level, lock and seating.
- Clean the left light barrier window.
- Measure the barrier signal at the board.
- Replace the barrier if its signal does not change with beans present.
- The barrier signal is read on the live control board.
- If beans keep bridging, the hopper feed needs inspection by a technician.
How error code S-034 differs from similar codes
W-084 is the earlier warning for the same hopper; this stop message means the level has dropped further or a lock is closed.
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.
Related Eversys super-automatic coffee error codes
Is S-034 the same as W-084?
They name the same sensor. W-084 is the warning; S-034 holds drinks.
Can I make drinks from the right side?
The table does not restrict it, so check whether S-035 is also showing.
Why does a full hopper trigger it?
The light barrier may be dirty or blocked, so report it.
Need help with Eversys error code S-034?
A technician confirms the cause on site and gives you the price in writing before any work starts.