Hi, I have an AC180 purchased March 21, 2025. I use my AC180 as a UPS for my home and work computers. I have a continuous wattage use averaging 250 watts, this includes 2 computers 3 monitors, 1 desk lamp, and desk fan all items are plugged into surge protectors that are plugged into the AC180.
The AC180 stopped working, The unit AC indicator was flashing green and had a red Surge Indicator lit on the bottom left of the control panel. I shut the unit off, un-plugged the surge protectors, unplugged the cord to the unit and to the wall outlet, let is sit for 10-15 seconds then plugged everything back in and it seems to be working again. Has anyone else experienced this issue? Should I contact support or wait to see if it happens again. I could not find trouble shooting steps in the manual for this issue. Thanks
Hi @Cap007, We’re concerned that the AC180 may not be compatible with your surge protectors. Could you try removing the surge protectors and then run the test again?
You can simulate a power outage by turning off the outlet that the power strip is connected to. Under normal UPS operation, the AC180 should provide power to your load within 20ms.
Does this help?
I do not have the AC180 connected to a power strip. I have it plugged in directly to the outlet. Should it be plugged into a power strip? I have a whole house surge protector in my electrical meter installed by my electrical company, and I pay for it monthly. Thanks
The instability of UPS mode can be software related. I recommend you at the very least update the firmware to the latest supported version in production to restore stable operation. If you check for updates and it says you are up to date, provide Bluetti engineers/support with S/N of device, ARM version number, DSP version number, BMS version number. They can push the latest firmware update to your device.
To eliminate a fault in the surge protector unit itself such as a short, all you would need to do is simply test the unit without the surge protector and see if the issue happens again. If it happens regardless of the firmware update and you remove the surge protector and it works, it’s the surge protector. If the firmware update fixes it, it’s the software bug. I believe support misread your comment about the surge protector, but regardless of how its connected, the unit itself can still malfunction, so to find out, its a process of elimination.
When you are in UPS mode you are essentially bypassing the internal battery and supplying power directly to the AC inverter (passthru). Fluctuations in the grid can also cause problems and become unstable (think brownouts or heavy loads), which can cause it to stop working. There is a mode called “Self-grid adaption” which increases the frequency curve to match this instability, however, the drawback is enabling self-grid adaption might cause the UPS switch-over time to not work within 20ms.