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Solis S6-EH1P6K-L-PLUS fan noise

cotneit

New Member
Joined
Sep 26, 2024
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Ukraine
Hi everyone! I'm considering buying a Solis S6-EH1P6K-L-Plus inverter for my first home ESS setup, but it will be in a somewhat noise-sensitive area and this particular model has external fans, so I'm a bit concerned about noise.

Does anyone know under which circumstances those fans turn on? How loud they are? How much of a pain would it be to swap them out with quieter fans if they do end up being loud?
 
No idea about the S6, but the Solis S5 (which claims to be of fanless-design) turns on its internal fans when battery charge or discharge exceeds 3kW.

 
No idea about the S6, but the Solis S5 (which claims to be of fanless-design) turns on its internal fans when battery charge or discharge exceeds 3kW.

Thanks! This actually aligns with results from Solis S6-EH1P8K-L-PRO review I read:
The fans on the 8kw don't run under most conditions. They are either on or off, and when running are fairly loud (with a noise signature akin to a jet engine) so I wouldn't mount the inverter in a noise sensitive location. The fans always turn on when the inverter power (load or solar power into batteries) is greater than 3kw, or when the internal temperature rises above around 46C or so.
 
Got an answer from Solis Support!

Could you please tell me under which conditions external fans on Solis S6-EH1P6K-L-PLUS turn on?
If one of the following conditions is met:
PV current >10A(30% duty cycle)
Battery current >70A(30% duty cycle)
Radiator temperature >65℃(30% duty cycle)
Total Grid side current >25A(30% duty cycle)
 
I have the same model, I they have a fan but I forgot the last time it switched on, it was last summer and it was pretty hot in the garage (all metal garage exposed to direct sun) but it was only one time thing, never noticed it actually
 

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