Pulsar PG12000BCO / PG7750BCO / PG6580BCO / PG105TiSRCO error codes
8 codes from the official Pulsar manual (10500 Watt Tri-Fuel Inverter Generator, Model: PGD105TiSCO), each with the manual page.
Applies to: Pulsar PG12000BCO, Pulsar PG7750BCO, Pulsar PG6580BCO, Pulsar PG105TiSRCO, Pulsar PG15KVTWBCO, Pulsar PG3500MRCO, Pulsar PGD170TiSRCO, Pulsar PG13000BRCO, Pulsar PG6580ECO, Pulsar PG4000BiSRCO, Pulsar PG5000BiSRCO, Pulsar PGX5250BiXCO, Pulsar PGD95BiSCO, Pulsar PGD105TiSCO.
| Code | What it means | What to do | Service | Manual |
|---|---|---|---|---|
| RED CO Sentry RED indicator light | Carbon monoxide has accumulated around the generator and the unit shut off due to a CO hazard. The red light flashes for at least five minutes after shut-off. Automatic shutoff with a flashing red light means the generator was improperly located. | Move the generator to an open outdoor area far from occupied spaces, with the exhaust pointed away. Once it is in a safe area, it can be restarted. Introduce fresh air and ventilate the area where the generator shut down. | owner | p. 4 |
| YELLOW CO Sentry YELLOW indicator light | A CO Sentry system fault occurred. The generator shut down automatically, and the yellow light flashes for at least five minutes after the fault. | The generator can be restarted, but it may continue to shut off. | owner | p. 4 |
| CO CO Indicator | Detects the presence of carbon monoxide and may shut down the unit automatically for safety. | The manual gives no specific reset step for this indicator. If dizziness, weakness, or nausea occur, turn the unit off, move to fresh air, and seek medical attention. Operate only outdoors, away from enclosed spaces. | owner | p. 5 |
| Low Oil LED Low Oil | The engine oil level has fallen below the safe operating limit (270 ml or less). The engine shuts off automatically and cannot restart until the proper oil amount is added. | Add the appropriate oil until the level is at the proper mark. SAE 10W-30 is recommended for general use. Do not run the engine with too little oil. | owner | p. 14 |
| OVERLOAD OVERLOAD light | The total load on the outlets exceeds the generator's running power. If the light turns on and the generator stops producing power, it has been overloaded. The light may flash briefly when a large device starts. | Turn off and disconnect all electrical devices and stop the engine. Compare device requirements to the generator rating and reduce connected wattage if necessary. Check and reset any tripped circuit breakers, then restart and reconnect devices without overloading. | owner | p. 14 |
| LOW OIL LOW OIL light | The engine oil level is too low. The engine shuts off automatically when the oil falls below a critical level. | Add the appropriate oil, SAE 10w-30 recommended for general use, until the oil is at the proper level. The engine cannot be restarted until the proper amount of oil has been added. | owner | p. 15 |
| Low Oil Shut-Off | The engine shuts off automatically when the oil level in the crankcase falls below a critical level. | Add the proper amount of oil. The engine cannot be restarted until the proper oil level has been restored. | owner | p. 17 |
| Low oil LED light | Low engine oil level, indicated by the low oil LED. The engine will not start or may shut down with low or no oil. | Add oil to the correct level. Check the oil level daily and keep the generator level when adding oil to avoid overfilling. | owner | p. 24 |
Source: official Pulsar manual, read 2026-11-04. "Owner" means the manual lists steps you can take; "dealer" means it directs you to authorized service. Fuel, gas and electrical work on generators is for qualified technicians; follow the manual's safety section.