Recently, the AC300 that I have owned for nearly a year is randomly shutting the AC Output off. This is happening without any errors being generated.
The head unit is connected to two B300s. The batteries are not daisy chained. They are configured as Battery 1 and Battery 3.
The “Battery Information” menu screen is cycling between wildly high and low SOCs, and the correct SOC.
The SOC will display as -664%, 275%, 980%, and 966%, and sometimes even 0%. It will briefly flash on the icons for batteries that are not connected (Battery 2 and Battery 4), and display SOC percentage for the “ghost” batteries.
Has anyone else heard off or experienced this issue?
The AC Output constantly, randomly shutting off is unacceptable. It renders this solar generator useless.
@Phie917 Did you open ECO mode? Which device did you load with AC300? Please try to restore the factory setting to check because we suspect that you may have set it wrongly.
Thank you for your reply. I don’t use ECO Mode.
ECO is ECO OFF.
I’m not sure what you mean by “which device did I load with AC500”. (Also, to clarify, I have an AC300)
Per your request, I restored to factory settings, and powered the unit off and on, and I am having the same issue.
I finally have an error message to report (see the attached photo)
I reported this issue to Amazon Bluetti Support about a month ago, and they uploaded the following firmware versions to me in an attempt to fix the issue, and I installed them.
It did not resolve the constant, random shutdown of the AC Output, and the wildly fluctuating SOCs and “ghost” batteries 2 and 4 flashing on and off.
@Phie917 Thanks for all the information above. Could you please provide me with the below information? Then our technician will reproduce the scenario and find the solution.
The SN of the AC500
The firmware version of all the batteries.
Also, we suggest that you can connect the battery one by one to test if the SOC is displayed normally.
Thank you for checking in. I am working with Amazon Bluetti Support via email.
I performed the one by one battery test (Battery 1 and 3), and the SOCs still jump around and continue to show activity on Battery 2 and 4 even though I don’t have batteries connected to those ports.
The support team sent me a new firmware for the batteries. I updated them, and the issue still exists.
I am now experiencing this problem with the AC300. The AC Output just silently stops. No logs/warnings. All lights are green, everything seems good. It just disables it. I can turn it back on and it’s good again - for a while.
It happened a month or so ago and I figured it was some strange hiccup. It has now happened twice in the last couple of hours. This is a bit concerning.
Hello,
I know this is an older thread, although I was curious of the outcome of your malfunctioning AC300’s, I just started experiencing this issue with one of my AC300’s that I use as a battery backup (UPS mode). The pattern is exactly the same as described but I am just using one battery at the moment. I switched out the AC300 unit with a spare to see if I will get the same shut off of the AC outputs (to see if it is battery related). Will try to test the malfunctioning AC300 during the time to verify if the other AC300 does not shut off the outputs for several days, thereby eliminating the battery being an issue.
My Issue: AC300 shut off the Outputs long enough for the items connected to it shut off.
Happened with BOTH the “AC in” connected (about 3 times in 3 hours) and another time without the AC line in.
Never more that 500W out (and just electronics - no AC units or items with High Amp turn on)
Have been using this AC300 for about 8 months as a UPS.
NO ERROR CODES - like mentioned above.
Please let me know if @bluetti resolved your issues…
Thank you,
William
I would like to get this issue resolved before any expiring of the AC300 warranty and before I start my next Solar Array built in 2025.
The AC300 is in UPS mode so the battery was at 100% (according to the SOC in the App), Never at insufficient power.
ECO has been off the entire time.
No Alarms either in history or when I went to check when it occurred. I just heard a beep from the AC300 and all the items plugged into it turned off. No Error codes to clear, either. Then it turned back on within a few seconds on its own. This situation occurred WITH and WITHOUT the AC line being plugged in (e.g. when in the system was Passing through AC, AND when it was operating off Battery only, the battery was at 96%.) A total of 5 occurrences within 3 hours.
I plugged in another spare AC300 that I had, and it is working fine since I swapped out the malfunctioning AC300 and using the same battery, I plan to test the malfunctioning AC300 with another battery in the next few days to see if I can reproduce the shut off problem (with the new firmware). I am concerned the malfunctioning AC300 may surge and blowout what may be plugged into it.
Other notes: the “blowouts” occurred when the system was consuming (passing through) only 200 to 500 watts.
I will need to update the firmware before I go through the troubleshooting problem again, however, I am quite sure that is not the problem, since the system has been operating flawlessly for the past 7 months on the current Firmware.
Let me know what other tests you would like me to complete. Thank you for responding,
William
Hi @wtytke, Could you please provide the SN code of this AC300 and the current firmware version? Have you updated the firmware to the latest version? This might help resolve the issue.
Additionally, after the upgrade, please record a video and upload it to a cloud drive, then share the link with us so we can analyze it.
