Nozzle ventilator 16VDC?

Hi Guys,

There is two ventilator neer to the nozzle. It wa bad and I swapped it with 12VDC sunon maglev ventilator and the ventilators are not working. I measured the voltage and I measured 16VDC on both pins (red and blue). Is this normal? Or the motherboard is bad?
Later I bought a normal 12VDC ventilator because I read the sunon maglev is not working with zortrax. The normal 12VDC ventilator is working on 16VDC. But I think it is not so healthy.

Thank you in advance for your help.