U-Line Ice Maker Error Code No Comm

No Comm means the unit has detected a loss of communication between the main control board and the display board. This prevents the two components from exchanging operational data. The error is most commonly caused by a loose, damaged, or corroded display cable connecting the two boards.

A reset may temporarily clear the error code, but it will return if the underlying communication problem is not corrected. Because the fault is caused by a physical issue such as a loose or damaged cable or a board failure, the hardware problem must be addressed to permanently resolve the error.

Repair costs vary depending on which component has failed. A replacement display cable is typically the least expensive fix, generally ranging from around $10 to $40 for the part. If a display board or main control board requires replacement, parts costs can range from $80 to $300 or more, with additional labor charges if a technician is needed.

Start by locating the display cable and checking that it is firmly seated at both connector ends. If the connection is secure, inspect the cable for visible damage such as kinks, cuts, or corrosion at the terminals. Replace the cable if any damage is found. If the error persists after replacing the cable, the display board or main control board may need to be tested and replaced.

The No Comm fault is not a direct safety hazard, but it does indicate that the unit's control and display systems are not functioning correctly. While this is not dangerous, the ice maker may not operate reliably or at all until the communication fault is resolved. It is best to address the error promptly to avoid further issues.