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SunBeam Questions & Answers

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Lael Pearce
Lael Pearce

Sunbeam v1.59 randomly lost it's config.

More of an FYI, woke up today to find my sunbeam had basically reset itself at midnight 9/1/2026 (stopped sending mqtt data at 1 second resolution 00:00:42). I haven't touched it via web for several months. But various automation scripts will adjust the power limit a few times a day via mqtt. It appears only WiFi info was kept, everything else was reset to default (timezone, mqtt, back to display control, etc).

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Hi Lael, Thanks for the information. I will need to continue to monitor this as this happens very rarely. I have it happened with other devices that share the same hardware and codebase and what you describe is exactly what happens. It's similiar symptom when you press the "erase settings" button under the Network Configuration. This is where the user flash gets erased as opposed to the system flash where the wifi info is kept. The erasing part when it is not on purpose but rather automatic is a designed feature by us where at boot up, if the firmware checks a certain part of the flash to see if it is as expected. If it finds something unexpected, it will erase (reset) the entire user flash. just in case. For some reason, the firmware must have corrupted this portion and caused a reboot. I'm thinking there is a bug somewhere that crashed the firmware, but I haven't found it yet. I'm pretty sure it's not in the code that I wrote because I've checked many times. I think it's in one of the many libraries that I've used so that is why finding it is so difficult.

August 11, 2025 · updated the description of the group.

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Stops generating by itself

Hi!


My Sunbeam stops my GTIL2 from generating by itself. I generates as it should but then, after a short period, it turns generating off.


I can see on MQTT that it sets ion -> 0 and nothing has told it do to that.


How do I debug? Hardware failure? Bug in Sunbeam?


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Atlanta_nerd_boy
11 jun 2025

Ok, thanks. I think ignoring err:6 and err:10 should work fine since the LCD display control mode doesn't stop generating when receives these errors. Since the manufacturer of these inverters didn't release any documentation on the data between the Display and Control boards, I can only change the SunBeam's firmware to behave the same way as how the Display board reacts as people are experiencing them just like what you did so I really appreciate your help.

However, this doesn't solve the issue of why you are getting these errors. It might be indicative of something is going bad or there's something probably on the AC side it doesn't like (the occasional 0 on the AC voltage). Anyways, I'll make the change to the firmware as verion 1.54 in about 5 minutes. I'll let you know and you can download it immediately using the debug method I mentioned earlier.


Changing PLIM via MQTT often

I want to avoid exporting but still follow the consumption. Using clamps would of course be preferrable but that is not possible. Then I saw the Sunbeam and thought I'd change power limit via MQTT instead, but I now realize that it isn't as smooth as with the clamp to change power limit; it's a 'restart' every time.


Will this kill my GTILs over time?

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johan
20 abr 2025

Hi! Ah, thanks for the good explanation. I'm would be quite happy with changing plim like a few times per hour (5-10 or something), would this behavior be OK for the inverter then? And yes, I know there can be no promises, I'm just looking for common sense.

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