I am experiencing an issue with my Apex 300 where the AC output would unexpectedly shut off.
This happened 2x to me. And each time, the device is plugged into the grid, performing grid pass-through power on about 70w of AC load, while also charging with solar (400-600w). It would charge normally, and the SOC would increase much faster than expected, hit 100% and then the AC output would shut off. I can go and press the AC output back on manually and it appear to work OK. A few days later, it happened again, charging using solar while plugged into the grid, SOC increase normally then rapidly increase, hit 100% SOC and then AC powers off. Has anyone seen this?
My firmware situation:
IoT v8026.12
ARM v2204.11
DSP v2174.11
BMS v1073.07
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Thank you for your message! To help troubleshoot your device, please check the following:
- Is the machine charging normally or powering a device? Is the ECO mode turned on?
- If the machine is not charging and both AC and DC are off, it will automatically shut down after a period of time to save power.
- If ECO mode is enabled and there are no devices connected or the load is too low, the AC and DC outputs will automatically turn off after 1 to 4 hours (the specific time can be set in the app), and the machine will then shut down after some time.
- If the machine is only charging via PV and both AC and DC are off, charging will stop at night, and the machine will automatically shut down after a while. It will reactivate when PV charging starts again the next morning.
- Is the machine out of battery? If it is, it will automatically shut down.
- Please check the error code interface for any historical error codes.
If you have any questions or need further assistance, feel free to reach out!
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The issue here isn’t that the Apex300 turned off, it stays on, but the AC output turned off unexpectedly. Eco mode is off. The Apex300 is powering AC load of about 70w both times this happened. Grid is plugged in and solar is charging it at around 500w with bright sunshine, SOC is increasing and rapidly increases to 100% and then the AC output shut off (the machine is still on). You can see what happened in the graph above. There is no error code in the history. This happened 2x under the same circumstances.
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I apologize for misunderstanding your issue. Thank you for the clarification.
Could you please provide the SN code and firmware version information? I will register this and arrange for a firmware update for you.
Looking forward to your response!
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Any chance your unit is plugged into a GFCI outlet?
I had a similar issue, but not exactly the same…when doing pass-through, if AC load is on, the unit drops the grid charging, but AC Load stays on. Wondering if your issue is tied to something in the sequence of how the software troubleshoots - yours drops the AC Load, mine seem to trip the GFCI switch (not the breaker’s though).
I attached a grounding cable, but that didn’t fix it. I then tried plugging the unit into a non-GFCI plug and that resolved my issue. So it’s an interim fix for the time being.
I’m hoping Bluetti can figure out why this is happening as I’m sure there are some who are running the unit (especially in a portable type set up) where they’d pull up, plug into an outdoor GFCI plug, and run into some head scratchers.
Good luck though! I hope they figure this one out and issue a fix for it. Seems we may be coming up with one off, nuanced issues.
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No this isn’t plugged into a GFCI outlet, but the issue here isn’t that the grid input stopped, but that the AC output turned off on its own after it chargers to 100% using PV power while grid is also plugged in.
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Thanks Bluetti. My firmware setup is as follows:
IoT v8026.12
ARM v2204.11
DSP v2174.11
BMS v1073.07
What would the updated firmware do? Is there a know fix that is coming out soon and you would be able to push it to me sooner? Would getting this out interfere with future updates? Or I would continue to get updates when new versions come out?
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Yeah, was just checking in case since I also wanted to see if the GFCI “issue” could be affecting someone else in a different way.
Appreciate the confirmation! Good luck with how they resolve this one for ya!
I got a response on my issue, and they said they recommend plugging a unit into a non-GFCI outlet since the Apex 300 (or possibly other Bluetti products) could trip a GFCI outlet.
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I am facing the same issue. Would it be possible to arrange a firmware update for me as well, please? I am running on latest firmware like in the snowstorm’s message above.
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Hello, please tell me the sn code and firmware version, thanks.
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It’s AP3002523000800621
ARM: v2204.11
DSP: 2174.11
BMS: v1073.07
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Hello, I have registered the firmware update for you
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I am testing out the following to see if the AC cuts out at 100% charge.
@andrii.litvinov when you have the problem, did the AC cut out as SOC reach 100%? Were you charging using GRID or PV at that time? What was your working mode (backup, self consumption etc…)?
DSP V2174.12
ARM v2204.12
BMS 1073.07 (no change)
BMS B300 V1014.18
BMS B300k V1067.13
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@snowstorm my setup is Apex 300 + B300, so sort of similar to yours. I only use charging from the GRID, no PV connected. I use it in backup mode. The issue reproduced with both standard and NEMA 14-50 cables. B300 BMS version is v1024.03.
I see that battery slightly discharges at times to 99% (or lower when the GRID power goes down), then gets charged back to 100%. Currently I don’t see any correlation of this issue to the charge level.
Do you still face this issue with the firmware update?
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I have seen this 2x so far before the firmware update. Each time the apex system is charging using PV in a sunny day with about 600-800w of PV input and AC output is powering a modest 89w load. The SOC is steadily increasing, and it would hen rapidly increase to 100% at which point the AC output turns off. I am going to try reproducing it with grid charging. Tomorrow AM if it is sunny. I will try to reproduce it with PV charging.
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I had this issue a few months ago, and a firmware update seems to have fixed the issue. However, that was several versions ago so I hope it hasn’t reappeared in newer firmware. Still, I’ve developed a habit to monitor the system whenever charging to 100%, so I can turn the AC back on if it turns off. I also usually run in Time of Use or Self-Consumption mode with max charge set below 100%, and have never had the AC shut off at anything below 100%.
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I am happy to report that I was not able to reproduce the AC shutoff issue with my recently updated firmware
I have Apex300 with an B300k and 3xB300 connected
DSP V2174.12
ARM v2204.12
BMS 1073.07 (no change)
BMS B300 V1014.18
BMS B300k V1067.13
Reproduction scenario (2x before update)
Charge Apex300 System to 90% using grid. While using AC out around 70W. Grid is connected and pass-through is on. Charge Apex300 using 600w of solar. SOC increase to 100% and when it reaches 100%, AC output shuts off.
Situation Today after update
Last night, I have no load connected and charged Apex300 to 100% using grid. AC output remained on. Today, I let it drain to 98%, AC output running 70W load, charged with 400-600w of of solar to 100%, AC output remained on (note that grid was not connected).
One final reproduction case to check tomorrow (if sunny) is have grid connected as pass-through, and then charge it to 100% using PV.
So far, things seems to be looking up.
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Currently I have following versions of firmware pushed to my unit by directly contacting support:
IoT: v8026.12 (updated several days ago)
DSP V2174.12 (updated several days ago)
ARM v2204.13 (updated today)
BMS 1073.07
BMS B300 v1024.07 (resolved an issue of B300 preventing the Apex 300 shutdown)
I can confirm that AC was never shut off after those updates over the past several days. Previously it happened regularly every 12 hours or less. The unit runs in backup mode and charges to 100%
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Unfortunately… my AC output shut off 2x for me today despite having the following firmware.
iOT v8026.13
ARM v2204.13
DSP v2174.12
BMS v1073.07
B300 BMS V1014.18
B300k BMS V10674.13
In the morning, the SOC is high, near 95%. The unit’s AC output is on and powering a 70W load. The grid is plugged in and is going pass-through even though it is in self-consumption mode with set SOC 80% because the AC output wattage is below 150w (apparently, this is by design). The PV input is plugged in, and is charging using solar. When the SOC reaches 100%, the AC output turns off. All eco modes are off. There are no error codes active or in the history. The unit performs normally again when I manually turn the AC output back on.
Since the SOC is still around 99% and the sun is shining, my AC output shut off again by itself in an hour and I had to repeat the process.
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I was advised by Bluetti to test my setup with just the Apex 300, Apex 300 + B300k and Apex300 + B300
I found that the AC cut off as SOC reaches 100% using PV charging only happened with Apex300 + B300. The AC remained on when Apex300 is used alone or when it is connected to B300k.
I’ve sent this info to them and am awaiting a response
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