The printer is displaying the message: RPM of (fan)s not in range. Check if the fan is connected correctly.
Error name: Fan RPM not in range
Error code: #10122
Issued if the RPM of any of the printer's fans is not within their limits of use when measured, during the calibration wizard.
The SL1 has three fans:
If the warning appears, please follow maintenance steps for the fan that generated the issue: SL1/SL1S maintenance. When doing that, also check the cable connections of the fan to the mainboard.
Go to the printer menu in LCD menu -> Settings -> Calibration -> Wizard. The printer will run the self-test. In case the fan also fails during the self-test, switch the connection of two of the fans, and see if the warning will be transferred to the new fan. If the error is transferred, the fan that had the warning originally may need to be replaced.