YNL

The usage doesn't look problematic, but the AC power draw would be at a lower current anyway because of the higher Voltage of 230V. The issue has been on the DC side, so where the battery is concerned. Please supply graphs of your battery charging and discharging, and your state of charge (which we expect is not available because of no BMS communications.
Other than that, yes, try to set your battery mode to "Use Batt V" go into the battery menu again, use the down arrow to get to the sub-menu screen, and then check and set the float, equalisation and cutoff Voltages as per the Deye AM-5 battery's requirements. At least that way the system should not be totally blind.

I found that my inverter temp is mostly driven by PV production. The higher my PV production, the hotter my units get.
Load to me seems to be a smaller contributing factor. E.g. the temps are similar at 4kW PV production with little (1kW) or high (4kW) loads.

Did your installer check the dipswitch settings ensure the Master Hubble Battery dip switch address is set to 1000.Single battery to address 1. Do you have cloudlink setup?

So these are the current settings. 



Seems to be aligned to whats on the hubble website for the am-5 : https://www.hubblelithium.co.za/deye

Thanks for the suggestions. So will that be the Use Batt V setting in the screenshot above? Its currently set to Lithium.
I did lower the A charge and A discharge over the weekend and the temps still were the same. However, to protect the battery and inverter I will put those charge and discharge settings back now.
The installer did come out again this evening to inspect it and verify the installation and check why the Batt comms aren't working. He double checked that the Deye CANBus cable is attached to the Hubble battery CANBus port, but still no communication. We found this odd as based on https://www.hubblelithium.co.za/deye , the deye inverter and the Hubble AM-5 should have full communication and it is compatible. The installer is following up on this.
 
It has a fan thats always spinning. Its not very loud but you can definitely hear it spinning away. So does this mean I might have an old version even though I just bought it last week?  My model is SUN-5K-SG01LP1-EU 5KW DEYE.
Either way, it seems like the newer version also has heating issues as you say.
 
Thanks for the input everyone, as things stand I have an over heating inverter which has no comms to my battery. Will keep this thread posted to see where this goes. 

I'd also suggest that you check the Battery settings in the inverter. If the inverter cannot communicate with the BMS, then I wonder what settings he has put there...

Until the BMS communications are set up correctly, as @wolfandy suggests, try to check the voltage charge and discharge settings under the battery menu in the inverter, compare it to the battery specs (see if there's a plaque on the battery). It looks like the inverter is in lead-acid by percentage (%) mode. Rather try Voltage mode, since your inverter cannot get the % via the BMS.
Maybe even try to limit the charge and discharge amps on the inverter to 50A charge and maybe 90A discharge. Or else even disable charging from grid entirely until someone has come out to inspect it.
 

If this is a new Deye, it most probably doesn't have fans (can you hear the fan, or is some software saying the fan is on?). A friend of mine bought a new 5kW Deye to parallel with his old one, and he had the same temperature readings you are showing. He bought 3x 80mm 12V fans and built a frame for them, and has them running full time, and now his new inverter runs cool. A fan-less inverter might be OK the the UK, but NOT for South Africa.

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.

I have a 5Kw SunSynk (same same) and mine runs the same temps. However, I do not have fans. Mine is installed in a pantry, with dishwasher and washing machine, so a fair bit of ambient heat. And I have solar installed.
However, your BMS is much more of a concern, as your UPS needs to know what the battery is doing. So I would fix that way before the heat!

That isn't good. I have my 5K SS in a HOT garage and my temps are below, over the past two days:
 

Have you measured the ambient temp of the garage? Considered installing a ceiling and insulation?
 
Your battery comms is also not good, get your installer back to fix it, check that it is set to use Lithium mode 00. Check Deye specific settings on Hubble's website: https://www.hubblelithium.co.za/deye
 
 

No - this should not be contributing to your temp situation.
But as @YellowTapemeasure wrote, get your installer to fix it. Otherwise your inverter is running 'blind'

Thanks for the help and input and that graph. I wasn't comfortable with the high temps so I am running extra fans until I find the actual cause of the high temps. So find a cure instead of addressing the symptom   
Regarding the BMS, yeah, need to address that too asap. 
 
Thanks for the reply. Yes, I fully agree, my temps are not good. Thats why I really want to fix it. Surely this fancy piece of hardware cant sustain such high temps?
I checked the deye manual and the operating temp should be 25 degrees to 60 degrees.

Regarding the battery comms, I have spoken to my installer and he said he will sort it out asap.
 
 
Thank you.  An inverter running blind cant be good