Code SVGN-165: Gun opened < equalizer trigger distance.
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Gun opened < equalizer trigger distance. 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 open distance condition for equalization pressure trigger, was not met before the start of motion to pressure position, for the next spot. The equalization trigger state for the next spot might have been delayed, in this case. Remedy: Increase the end and/or start distance value on the distance schedule screen, or decrease the open distance for the equalization pressure trigger AFTER the SPOT.
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 SVGN-165 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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