Schaerer Coffee Machine Message: Grinding Level Adjustment Error

What does Schaerer error in electric grinding level adjustment mean?

This message on the Schaerer Coffee Soul concerns the electric grind level adjustment, the motor that moves the grinder to a finer or coarser setting for the center, left or right grinder. The table in chapter 14.4 gives the cause as the adjustment motor running incorrectly, and lists three actions: cancel the adjustment, restart the machine and contact the service partner. When the operator changes the grind level, the control drives the adjustment motor and expects it to move as commanded. If the motor does not behave as expected, the control stops the adjustment instead of leaving the grinder at an unknown setting. The message names all three grinders together, so it does not say which one is affected. The manual does not give the exact check the control performs, does not say how the motor runs wrong, and gives no reading or limit. The first two actions are for the operator. If the message returns after a restart, the adjustment mechanism needs a technician, since the grind setting affects every espresso made.

Affected models and control systems

Schaerer Coffee Soul with the 10-inch or 12-inch display. The message is listed in the Soul operating instructions, chapter 14.4, and the manual gives no board revision or model limit for it.

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 display shows "Error in electric grinding level adjustment for center, left or right"
• The grind level cannot be changed
• Coffee may come out too fast or too slow if the grinder is stuck on one setting

Possible causes

Likely causes — what usually sits behind error in electric grinding level adjustment on this control. A technician confirms which one it is before any part is replaced.

• Grinding level adjustment motor running incorrectly
• Ground coffee or oil blocks the adjustment mechanism, so the motor cannot move it
• The adjustment motor connector is loose or damaged
• The motor or its drive has worn and slips

Safe checks before calling for service

How a technician diagnoses error in electric grinding level adjustment

1. Read the message and ask which grinder was being adjusted.
2. Inspect the adjustment mechanism for grounds and wear.
3. Check the motor connector and wiring.
4. Measure motor supply and current during an adjustment.
5. Replace the motor or drive only after the tests, then recalibrate the grind.

Technical reference

Document

SOUL Operating Instructions (Schaerer, Original en)

Maker documentation

Schaerer owner support

Edition

Version 04-2026 (Doc. No. Shown as '-')

Models / control

Schaerer Coffee Soul (10-inch and 12-inch display)

Section

14 Troubleshooting - 14.4 Faults with display messages: 14.4.1 Fault tables pp. 223-226, 14.4.2 Error pp. 227-228, instruction messages p. 229 (PDF pages equal printed pages)

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.