Cummins Onan P4500i OVERLOAD LED
What it means: Generator is overloaded. With the OVERLOAD LED on and the OUTPUT READY LED off, there is no power at the AC receptacles. The generator may also run rough or bog when a load is applied.
What to do
Check the AC load and unplug some devices. Check the air inlet. Stop and restart the engine. If an AC circuit breaker has tripped, check the AC loads and reset the breaker. Replace or repair any faulty tool or appliance, then stop and restart the engine.
When to call service
The manual lists steps the owner can take. If the code comes back after them, or you are unsure, contact an authorized service dealer. A warning: the unit may keep running, but the cause needs attention.
Source: official Cummins manual, page 25, read . Summary of the manual, not a reproduction.
Models this manual covers
Other Onan P4500i codes
Questions
What does Cummins OVERLOAD LED mean?
Generator is overloaded. With the OVERLOAD LED on and the OUTPUT READY LED off, there is no power at the AC receptacles. The generator may also run rough or bog when a load is applied. (Cummins manual for the Onan P4500i, page 25.)
How do I fix Cummins OVERLOAD LED?
Check the AC load and unplug some devices. Check the air inlet. Stop and restart the engine. If an AC circuit breaker has tripped, check the AC loads and reset the breaker. Replace or repair any faulty tool or appliance, then stop and restart the engine.
Fuel, gas and electrical work on a portable / inverter generator is for qualified technicians; follow the safety section of the manual. All 2 Onan P4500i codes →