EcoFlow DELTA 2 Max / DELTA Pro / DELTA 2 error codes
18 codes from the official EcoFlow manual (DELTA Pro), each with the manual page. For 1 of them the manual says to contact an authorized service dealer.
Applies to: EcoFlow DELTA 2 Max, EcoFlow DELTA Pro, EcoFlow DELTA 2.
| Code | What it means | What to do | Service | Manual |
|---|---|---|---|---|
| High Temperature Charging Protection | The battery is too hot, so charging is stopped to protect it. | Charging resumes automatically once the battery cools down. | owner | p. 13 |
| High Temperature Discharging Protection | The battery is too hot, so power output is stopped to protect it. | The power supply resumes automatically once the battery cools down. | owner | p. 13 |
| Low Temperature Charging Protection | The battery is too cold, so charging is stopped to protect it. | Charging resumes automatically once battery temperature rises above 5°C (41°F). | owner | p. 13 |
| Low Temperature Discharging Protection | The battery is too cold, so power output is stopped to protect it. | The power supply resumes automatically once battery temperature rises above -12°C (10°F). | owner | p. 13 |
| AC High Temperature Protection | AC output is protected because the product is overheating. The indicator flashes. | Check whether the fan inlet and outlet are blocked. If not, normal operation resumes automatically after the product temperature drops. | owner | p. 14 |
| AC Low Temperature Protection | AC output is protected because the product is operating at too low a temperature. The indicator flashes. | Use the product at optimum environmental temperatures. Normal operation resumes automatically. | owner | p. 14 |
| AC Output Overload Protection | AC output is protected because the connected load exceeds the rated power. The indicator flashes. | Remove the overloaded device and restart the product. Use electrical appliances within rated power. | owner | p. 14 |
| Battery Failure | A battery fault alarm is shown on the LCD. The alarm does not clear after a restart. | Stop using the product immediately and do not charge or discharge it. Contact EcoFlow Customer Service for further assistance. | dealer | p. 14 |
| Car Charger High Temperature Protection | The car charger output is protected because the product has overheated. The indicator flashes. | Let the product cool down. It resumes normal operation automatically afterward. | owner | p. 14 |
| Car Charger Overload Protection | The car charger output is protected because the connected device draws too much load. The indicator flashes. | Remove the device connected to the car charger. Normal operation resumes automatically. | owner | p. 14 |
| Fan Blockage | The fan is blocked, which may be causing the product to overheat. The indicator flashes. | Check whether the fan is blocked by foreign materials and remove any obstruction. | owner | p. 14 |
| High Temperature Charge Protection | Charging is suspended because the battery temperature is too high. The indicator flashes. | Wait for the battery to cool down. Charging resumes automatically. | owner | p. 14 |
| High Temperature Discharge Protection | Power supply is suspended because the battery temperature is too high. The indicator flashes. | Wait for the battery to cool down. The power supply resumes automatically. | owner | p. 14 |
| Low Temperature Charge Protection | Charging is suspended because the battery temperature is too low. The indicator flashes. | Charging resumes automatically once the battery temperature rises above 5°C (41°F). | owner | p. 14 |
| Low Temperature Discharge Protection | Power supply is suspended because the battery temperature is too low. The indicator flashes. | The power supply resumes automatically once the battery temperature rises above -12°C (10°F). | owner | p. 14 |
| USB-A Overload Protection | Protection activated because the device connected to the USB-A port draws too much load. The indicator flashes. | Remove the electrical device connected to the USB-A port. Normal operation resumes once it is removed. | owner | p. 14 |
| USB-C High Temperature Protection | Protection activated because the USB-C output has overheated. The indicator flashes. | Let the product cool down. It resumes normal operation automatically afterward. | owner | p. 14 |
| USB-C Overload Protection | Protection activated because the device connected to the USB-C port draws too much load. The indicator flashes. | Remove the electrical device connected to the USB-C port. Normal operation resumes once it is removed. | owner | p. 14 |
Source: official EcoFlow manual, read 2026-11-01. "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.