The (Message No. 0300 W) on a Kaeser compressor typically occurs with the SIGMA CONTROL 2 system. It indicates that the controller is unable to save data to the inserted SD card. Common Causes & Solutions
You may need Password Level 2 to clear some diagnostic warnings. Procedure: Use the arrow keys to navigate to the Message List . Highlight the "SD card write error" (0300 W). Press the Acknowledge (check/reset) button on the keypad. ⚠️ Potential Causes & Remedies Possible Cause Recommended Remedy Write protection activated Slide the mechanical switch on the card to "unlocked". Defective memory card Replace with a new SD/SDHC card formatted to FAT32. Card not initialized Re-insert the card and restart the controller. Dirty contacts kaeser sd card write error top
Restart the Sigma Control 2 to reset the internal card reader interface. 🔍 Common Causes of Write Errors The (Message No
If you see on your Kaeser compressor display (typically on Sigma Control 2 or similar), the controller cannot save data (logs, parameters, alarms) to the SD card. Common Causes & Solutions You may need Password
SD card write error (typically Warning Code ) on Kaeser Sigma Control 2 controllers occurs when the system cannot save operational data or software updates to the card. While this warning does not shut down the compressor, it prevents critical data logging and system backups. Air Solutions Canada Common Causes & Immediate Actions
To prevent future SD card write errors, make sure to: