ok now I know. There are two points:
1)Disable all pwm in armbian-config (just dont turn them on )
2) Wiring polarity . Becouse case that I bought from ali ( geekworm ) has fan adapter from 2,5mm to 1,25 mm , but to work you have to change wiring red to black
on this adapter . To make it rather then pull I pushed them with tiny screw from the other side of connector ,then placed in , with changed polarity and at the end
taped for security ( cause now they are loose and can jump out - that is dangerous )
and works fine, only iam concern for attaching wiring to case.
thx I am testing Your overlay , it switchs on above 50 C