power.esrl3

How are you requesting these files? I've tried to request for firmware files due to some of my installations are offline, they seems ignoring my request. Do you have a special contact with them?

Meh, not even distributors. I dont understand the policy of this firmware sh#t. Its been a mess for a while now e.g. manufacturer/distributors bricking inverters due to uploading wrong firmware files smh. Sorry for hijacking the thread again OP. I feel the urge to reply to this.

I hope uploading firmware files become a norm in this thread and as detailed as this. Thank you for posting this.

This is spot on. How I wish things will be standardized on inverter/bms comms. Or atleast give the users an ease of access to settings. Yeah, we could use voltage mode but meh. Inverter/bms comms should be optimal.

I was shared a bin files before, but I have not managed to get the latest. I would appreciate it if you could share the files. I kinda want to hoard these files for future reference. They explained to me before that the mcu bin is for the lcd, and the other one is for the main board. They suggested that you update the lcd first to avoid reboot, then finally the board (3382). You use the logger's webpage. Proceed at your own risk though. Better to ask them first for confirmation. I believe the latest is 3382 c35d for deye 5k. You can check the sticky thread in this forum.

Agreed. The main contributor of heat I have observed is mostly on the DC side. Firmware version is not that old, but I believe the latest is 3382. But I have not encountered any issue when I was in 3374. The graph, as someone mentioned, please show the DC side of things (pv, battery charge/discharge). Regarding the bms comm, your inverter must have bms err check disabled, I think you can find that in advanced or battery settings menu. When that is checked, the inverter should not run in normal mode if there is no proper bms comm, thereby no heating will be produced, but in my opinion, this is disabled in your inverter since you mentioned it is running in normal mode but no proper bms comm. As they have suggested, you might want to try voltage mode for observation while you figure out the bms comm issue, so your inverter would not be running blind. Can you show the bms comm ports of your battery? It might be using pace bms, and just needs some software protocol editing.

Is your inverter not on the latest firmware? Updating it "might" (note that no one is sure a firmware update could fix any issue due to deye ridiculously not releasing their changelogs) fix one of your issues. Be wary though, as I have read a lot horrors here that suppliers/support "accidentally" loading a different firmware to their inverters (ridiculous). What's your firmware version? BMS comms error should not contribute to the inverter's 24/7 heating. The main contributor of the heat and almost always causing the fan to blast is the DC or during constant battery charging/discharging. Although no bms-inverter comms, your bms should cut at full charge or full discharge, if your inverter is doing that at all (because you mentioned bms comms error), thus, cutting your inverter's heat as well. I also have the older 5kW with fan. If the inverter is set to lithium and is not communicating properly, this should throw an error to the inverter and the inverter would not run in normal mode at all and should not cause your inverter to heat 24/7 (if your installer did not disable the settings for this). But even though, your bms will cut at full or empty regardless, so none of these will cause your inverter to heat 24/7. Edit: Your inverter's usage graph could also help the people here determine the cause of your heating issue.

These suppliers/distributors/installers (more often than not even manufacturers) are so disgusting when they pokerface/downplay their clients when clearly there is something wrong with their products/installations. Either there is something wrong with your installation or the unit is faulty. More likely the latter. Return it. Dont accept the "it is normal" bullshit.

SA is worth the money. Stop begging them the access. I dont f'king understand why wouldn't they allow the end user to remotely access the settings of their inverters. Whatever an enduser could access a setting physically, is what you get on their remote access (solarman). There is nothing special that could start a nuclear holocaust. So I dont understand the restriction. If an end user f'kd the settings remotely, there is a higher chance they would f'k it first physically.

This is the problem if a vendor does not release their changelog. We're chasing our tail here. A hit and miss approach. I dont understand their logic behind this, they are very inquisitive when you request a firmware update, but they dont release changelog.

None. Their approach goes like "its a trade secret".

Some of their staffs now asks if there is a problem with the inverter on why one requests an update. I mean.. why is there an update in the firmware in the first place? Isn't it firmware updates usually means there is something to fix? I'd rather have that "fix" than wait for the problem to occur.

Did you notice any changes?

This should be fully cycled from the factory to calibrate full capacity. Once fully cycled, 100ah will be changed to the real capacity that depends on your lowest performing cell.

Please keep us posted.