I am running a Apex300 with B300k + 2 x B300, with PV1 connected to a solar panel of Vmp 42V and Imp 12A, PV2 is connected to 2 of those same panels but in parallel. DC input mode is set to PV high current. I noticed that from time to time, the PV input would just die. The sun would still be shining strong, the PV details would report 0W with a voltage near the Voc of around 47V. If I unplug and re-plug the connector, it would then resume to work normally. I thought this was a fluke, but it happened 3 times in the past 2 weeks.
IoT v8026.12
ARM v2204.11
DSP v2174.11
BMS v1073.07
I’ve seen this 2x this week with the latest update but I believe I have seen this a couple times before. At first, I just thought it was a fluke and ignored it, a flip of the DC circuit breaker and it works again. But since I’ve seen this probably 4x with 2x in the past week, I thought I might post it here to see if anyone else has an issue.
One of my PV input is pulling close to 20A at 35V (~700W), while the other one is 9A at 38V.
Actually it happened again this morning.
PV2 is doing 500W at 35V and PV1 is doing 240V at 38V.
For whatever reason, PV1 shut off, and the app reports 0W at 47V
I reset the breaker for PV1 and within seconds it is working a at 240W 38V
Something is going on to cause the Apex300 PV MPPT to not work. It remains connected as it reads the voltage, but is not pulling current / power. At this point, by SOC is 85% in self consumption mode with set point 70% SOC. Check the app screen shots made just before and after within 30 seconds or so.
Bluetti says they have received multiple reports of this recently and it seems to be associated with the recent firmware. They are working on a fix and offered to help me roll back if needed. I don’t necessary want to do that yet as I don’t know what other bugs were fixed. I wish they would publish a change log.
Hi @snowstorm!
Misery loves company, I have TWO Apex 300’s, one is connected to 4-B300 batteries, it only “recognizes” 2 of the batteries despite virtually all the upgrades done that are available. That Apex is now in Plano TX I’m awaiting a return of a new one that hopefully will work, so far it’s “ghost time” and with ADHD/OCD this is sending me off the deep end, believe me. I have two Solar X’s also, both of them do not work! One is in Plano, the other still home waiting for a ship label and an RMA, which BTW I never got for the first two items that I shipped, my fault, I should’ve replied back and made sure to get one. They know it’s defunct items, the Warranty Card says it all!
I’m “off track” here…ADHD at work ha ha. So, re the PV disconnect, yep, the 2nd Apex that I’m at least limping along with the 3 B300K’s that I have attached to it do the same thing. Pumping wattage like no tomorrow one minute, randomly shut off the next. Only recourse is to unplug the panel (I have only one each of 580W panels per port), wait for the voltage to drop to zero, plug it back in, and in a minute you hear a click and it starts taking in power to charge again. It flops back and forth between the two ports as you probly know. Never know which one will be next. Yes, Claire did say the engineers are working on a “fix”, hopefully soon and I have no idea how this stuff can work over the 'net thru the app, but I hope it gets done soon.
Being a “quasi-prepper” I keep reading the horror stores of WHEN…not IF…our internet is taken “offline” by the cyber warfare people and how we better be working up a “backup plan” when it’s gone. Well all that can be is snail mail, and just imagine how long and how hard it will be to get ANYTHING done with these otherwise electronic, digitally dependent devices will be!
Good luck. I’ve been working with them with TWO defective units…an Apex and a Solar X, limping along on my other Apex (I bought a kit with two of them), have heard the same thing, babysitting the one unit I as yet have to return while waiting even for a response about the first two units I returned. I’m suddenly being ghosted and I don’t like this one bit. I hope I don’t have to resort to legal means.
There is a major holiday going on in China right now so some response are likely delayed. They had been pretty helpful before and rolled out a firmware update for the E100V2 that fixed a major compressor compatibility issue. I hope they would also resolve the MPPT cutting out issue. If push comes to shove and they don’t help you, you can probably initiate a chargeback with your credit card company to seek a refund, it would probably not come to that. Bluetti makes stuff that looks great on paper, but some of the new products can be buggy.
Yes, I finally found that out, as being a “control freak”, take charge, don’t let grass grow under your feet kind of guy, plus spending over $6K on a system, I at list think I should get quick, positive results. So I reached out to C.S. from a previous successful chat, and thankfully sweet Vicky did explain about this “big holiday”. Wish there was some way “they” could’ve forewarned me the week prior when Claire (whom I think is in the Philippines, and was truly afraid for her safety from the earthquake) and I were exchanging all sorts of info! Woulda helped save a lot of stress. At any rate, she’s sending this onto someone who will follow up with the whereabouts and status of my two (of three) defunct pieces of equipment anyway, hopefully I’ll hear something this week. When I was in charge of facilities at a moderate school system, trust me, there was no downtime. I/we got things done quickly. I gotta get used to this I guess ha ha. Thanks for your reply.
Bluetti support said that this is a known issue with the current firmware and would release an update in early Nov to correct it. They said if I give them my SN they can push a roll back, but I don’t want to mess with that and would live with resetting it every other day or so.
Replaced our ACMAX200 with the Apex300 and 2 B300K expansion batteries. After being required to rewire all of our solar panels from Series to Parallel (to reduce voltage below 60V per solar input) which was not a problem with ACMAX200, were thought we were good. Unfortunately, we are required to unplug and reattach solar connections to APEX300 every morning as the DC Input is zero. One internet forum for another Bluetti unit stated the issue was that early in the am the solar input was triggering the internal controller, but was too low to actual start charging from solar, so it shuts itself off. Customer Support just responded to my email request by saying the issue can be resolved by rolling back to a previous BMS version. They will provide instructions after receiving my serial number. I am currently using v1073.07.
I am getting this issue on a daily basis, and have to reset the breaker to get it to start. Bluetti support told me it is related to firmware and offered a roll back, they also predict that a fix would come early Nov. Knowing that it is tied to the BMS is new info. Is this tied to the BMS of the Apex300, or the connected batteries? Perhaps the BMS is incorrectly reporting that the battery is full or incapable of accepting more charges so the MPPT input shuts off, but that doesn’t even make sense as the PV1 and PV2 seems to shut off independently of each other, it is not that both turns off at the same time.
I am testing out the following firmware. It has ran for 5 days so far and and PV input hasn’t cut out yet. Will keep testing and let us and Bluetti know:
ARM v2204.12 and DSP v2174.12
Unfortunately, it seems that this problem ahs has not been fully resolved for me with the latest firmware update.
DSP V2174.12
ARM v2204.12
BMS 1073.07 (no change)
BMS B300 V1014.18
BMS B300k V1067.13
While I didn’t get any PV input shut off last week, it happened 2x today, once on PV1 and once on PV2. Now, last week, the SOC was around 60-80%, today the SOC is around 98-100%, so I wonder if the update fixed something at lower SOC but there is another issue at near 100% SOC. I am in communication with Bluetti support and will let you guys know more when I hear back.
