Hi Guy,
I have one of these earlier Multiplus II 10kW models, where the fan noise already at low loads is way too loud, intolerable. Can you pls share
1) what magnitude of improvement was achieved with fan noise reduction fix on the 10kW model after serial number HQ2229, as listed in thread.
2) what is the actual fix, is it higher PWM fan control frequency? Hardware or software fix or both?
3) most importantly, is there a fix that can be applied to earlier models shipped before the serial number listed?
I received my 10kW Multiplus II in May 2022, serial number starts with HQ2147. If the serial numbers were sequential, it would be within last 100 manufactured before the fix was applied.
Thanks,
Ecoman