Notifications
Clear all
Topic starter
July 16, 2026 8:11 pm
I'm wondering what is too hot for a Flexboss 21. I've noticed recently on warm days when the temperature in our garage reaches 80° F, the front of the Flexboss is warm and the top ventilation is too hot to touch. I've checked the data history on the monitoring website and some of our "Tradiator" values have reached as warm as 68°C (155°F). These seems to happen shortly before the fans spin up in the morning and shortly after they spin down in the evening. 155° seems awfully warm for the fans to have spun down.
Topic starter
July 16, 2026 9:02 pm
@eg4eric Thanks Eric! Just wondering why fans don't come one a bit soon and ramp down a bit later. 155 is a warm environment for electronics.
July 17, 2026 12:50 pm
@nothing2crazy
The inverter's cooling fans will automatically activate when the output load exceeds 6kW, or the internal temperature exceeds 75°C.
July 30, 2026 7:57 pm
ErI’m cl I’ve tried to get this same information for my XP6000. Even at idle the temp is showing 130-140. The lower fan is running but the others are idle. Is this temp reported by SA inaccurate or is there something more to this?
August 2, 2026 1:08 am
@eg4eric I think I found the source of the inverter over-heating issue. In all my research I’ve never read anything about checking and cleaning the intake filters. Mine were completely covered in fine dust, likely saw dust. This was the source of my problem. I’ve since removed and cleaned them and all is working as before. I would be happy to see this suggestion as part of all of your inverter manuals as they are updated.
August 5, 2026 7:53 pm
@marobel
I'm glad you were able to find what the issue was!
There is a small section in the Flexboss manual that does mention Regular maintenance, I know there are a lot of people that miss it, since it's only like 3 points.
August 6, 2026 12:09 pm
I did review that section several times, but it would still help to call out the filter more explicitly. In some installations the intake area isn’t easy to see, and even if the surrounding area looks clear, the filter itself can appear uniformly grey or black depending on the dust being pulled in. That makes it easy to miss when it’s actually blinded, which is exactly what happened in my case.
Given how quickly a clogged filter can lead to overheating, it probably deserves a more prominent mention in the troubleshooting steps. If anyone reports thermal issues, checking that filter should be at the very top of the list.
Thanks again.
August 6, 2026 2:46 pm
@marobel
Understood! Thank you for your feedback and I will pass this along to our team for consideration!
