The update seemed to improve the situation. The clicking is still there but the time period in total is much shorter. Maybe over time the developer finds a solution that is even better, but for now I am thankful for the help.
Post your serial number and your dsp version. I think you could get the update also then.
AC200L2352000254639 Is the sn
Dsp is v2098.10
Cool thanks a lot . I’ll try it out
Could I also please have this update sent. I have the same consistent relay click from PV under low light.
AC200L2347000040657
DSP v2130.09
That must be what I occasionally hear, but it’s random during the day. Not really a constant problem though.
Sounds like when I plug/unplug my AC500 into the wall outlet, (I normally leave it unplugged.)
@BLUETTI_CARE, may I also please receive this update? I have the same issue, though I’ve only noticed it at dusk.
AC200L2345006033095
DSP v2098.09
Oops. Realised this afternoon that I’d been connecting via Wi-Fi, and so hadn’t seen the available updates. Have now updated, fingers crossed that solves the issue!
Could anyone confirm whether the firmware update discussed above has solved their relay clicking? My AC200L is fully up-to-date now, but the relay is behaving as before. @BLUETTI_CARE Any help would be appreciated! As I mentioned in another thread, that relay is cycling on and off somewhere between 300 and 600 times a day at present. At this rate, it’ll come to the end of its design life sometime around Christmas.
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Which DSP Version do you have now?
Currently DSP v2098.10, with nothing showing as available via the bluetooth ‘upgrade’ screen.
This is the current latest version.
In my case the relay clicking got improved a lot.
Just to be sure:
- your DC input source is set to PV?
- did you try to disconnect and reconnect the PV cable?
- the PV is connected directly to the AC200L without anything in between?
- did you try to switch off and on the AC200L?
And for curiosity: What type of panel and how many and in which configuration do you use?
Yes to all.
Nothing exotic about the panel setup, two of these in series:
www.leaptonenergy.jp/module/lp182-182-m-54-mh/
I’ve a model for the Japanese market, so we may not be in quite the same boat. I note there’s an AC 200 PL owner who’s started a thread after running into the same issue.
I’m having the same issue, could you please push a firmware upgrade to me as well please.
S/N :AC200L2348000335218
I0T: V9041.06
ARM : V2131.04
DSP : V2098.15
Thank you!!
When you can, unplug the solar connection once it get’s into this clicking mode. I have a AC200Max, it’s solar input doesn’t have this clicking kind of relay. I also use in addition a D050S charge enhancer, which connects through the AC input. That has a clicking relay which can get going and get’s annoying for a bit. I circumvented it by plugging the charge enchanter into one of my connected B300 expansion batteries, it isn’t afflicted by the click phenomenon.
I think the DSP v2130.10 is not publicly released or pushed to all devices but only the ones who posted their serial number and asked for it. That would explain why some people don’t see upgrades.
v2130.10 does not seem to solve the problem though, only make it a little better with less switching.
The other thread is over here.
I have noticed a similar issue with my AC200L. Around 5AM when the sun starts coming up and around 9PM when the sun sets, there is a repeated clicking noise from the AC200L. This lasts for a few minutes (maybe 5 minutes at most) with a click about every 3 to 6 seconds.
@BLUETTI_CARE Can you push the DSP firmware update to me?
Also, I don’t know how adjustable the parameters are for this firmware update, but it would be nice if the PV relay could click on once it detects a suitable voltage, then stay on for maybe about 5 minutes even if a low voltage / power input is detected. That way, I think the relay would only have to click on once in the morning and click off once at night, extending its lifespan.
Otherwise, I think what is happening right now is that the MPPT controller turns on with a relay click, starts pulling power from the PV array, which drops the PV voltage below a threshold, which causes the MPPT controller to switch back off and the cycle repeats.
IOT: v9041.06
ARM: v2134.04
DSP: v2098.10
BMS: v1043.11
S/N: AC200L2352000774061
@Craig1 I share your view that oscillation around a threshold voltage is at the heart of the issue here. I never did get a response from @BLUETTI_CARE, and I suspect that a firmware upgrade isn’t going to be able to solve this without unwanted side-effects. So I went ahead and put together a DIY fix with a DC DC relay. The control circuit uses a 5V USB cable connection, powered by a Switchbot smart plug. The Switchbot smart plug can be programmed to turn off or on according to a schedule, so you can isolate the panels from your Bluetti unit after sunset and avoid the relay flip-flop. You’ve the added bonus of being able to remotely cut/restart PV input, if like me you’re concerned about the 99%-100% cycling behaviour that occurs after fully charging the unit.
Note to @BLUETTI_CARE: remote, programmable control of the DC input would surely be a popular feature in future models. Allowing people to set up 40%-80% charging cycles, for instance, or to cut a PV connection during a thunderstorm. As far as I’m aware, you’d have a lead on the competition too.