Briggs & Stratton PowerProtect 22kW Standby Generator with Symphony II Controller NOT-IN-AUTO Error Fix: Not In Auto — Unit Not in Standby Mode

Error code NOT-IN-AUTO on the Briggs & Stratton PowerProtect 22kW Standby Generator with Symphony II Controller means: Not In Auto — Unit Not in Standby Mode. The generator controller is not set to AUTO mode, meaning it will NOT automatically start during a power outage. This is a status alert, not a fault. The controller has three positions: OFF, MANUAL/RUN, and AUTO. For normal standby operation, the switch must be in AUTO. The unit may have been left in OFF after maintenance, or switched to MANUAL for testing and not returned to AUTO. Set the controller to AUTO to restore automatic standby protection. The B&S InfoHub app (if connected) will also send a notification when the unit is not in AUTO mode.

The most successful fix is "Reset Controller Firmware and Verify Auto Mode Configuration" (medium difficulty, ~30 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

This error is rated low severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Reset Controller Firmware and Verify Auto Mode Configuration") is rated medium difficulty and takes about 30 minutes. Tools needed: T15 Torx screwdriver, Laptop with B&S software, USB programming cable.

DIY cost: $0. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

The Briggs & Stratton PowerProtect 22kW Standby Generator with Symphony II Controller has 8 other known error codes, including: CHARGER-FAULT (Charger Fault — Battery Charger Malfunction), CONTROLLER-FAULT (Controller Fault — Internal Logic Error), HIGH-TEMP (High Temperature — Engine Overheating), INSPECT (Maintenance Due — Service Reminder), LOW-BATTERY (Low Battery — Starter Battery Voltage Low), and 3 more.

Error code NOT-IN-AUTO also appears on 2 other Briggs & Stratton models: 30675 12,000 Watt 20 HP 120/240V Standby Generator with Automatic Transfer Switch Ready, PowerProtect DX 26kW Standby Generator with Symphony II Controller. The fix may vary by model, so check each model's specific page for tailored repair steps.