Generac · Generator Moderate

2680 — Generac 2680 — Low Fuel Level (Diesel Protector)

Alarm 2680 is a Low Fuel Level warning on diesel (liquid-cooled Protector) units: the fuel level is above 10% but below 20% for more than ~60 seconds. It is NOT a transfer-switch wiring issue. (Meaning corrected against official Generac support documentation / Evolution controller e-code list; older Nexus controllers may differ — confirm for your unit.)

Keep using it?
Yes, with caution
DIY difficulty
Easy
Verified against
support.generac.com ↗

How to fix it

  1. Refill the diesel fuel tank.
  2. If the tank is full but the warning persists, have the fuel level sender checked.

Why it happens

Typical signs: 2680 / Low Fuel in the log on a diesel Protector unit · Fuel gauge low

  • Diesel fuel tank running low Level between 10% and 20%.
  • Fuel level sender fault A faulty sender can misreport level.

More Generac generator codes

1100 1100 — Overcrank (Engine Failed to Start) 1300 1300 — Low Oil Pressure Shutdown 1501 1501 — RPM Sense Loss 1505 1505 — Overcrank (Variant — Try Again) 1600 1600 — Underspeed 1800 1800 — Overvoltage

All Generac codes → All generator codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: support.generac.com.