Code SRVO-015: System over heat
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical System over heat alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Cause: The temperature of the controller is higher than the specified value. Remedy: 1. If the ambient temperature is higher than the specified temperature (45 deg.), provide ventilation to reduce the ambient temperature to the specified value. 2. Check that the fans are operating normally. If not, check the fan motors and fan motor connection cables. Replace any faulty fan motor(s) and/or cable(s). 4.ERROR CODES B-83124EN-6/02 3. If the thermostat on the main board is faulty, replace the main board. Be sure to save the all files to memory card or other external media before you perform this operation.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc R-30i Series Robot Controller Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code SRVO-015 on the R-30i Series Robot Controller identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 6553 Fanuc R-30i Series Robot Controller codes.
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