Hello to all. I have a question concerning my RH300 G3 Plus fan. I have a RH200 G2, an RH300 G3 and a RH300 G3 Plus. The fans on my RH200 and RH300 run as soon as I turn on the head, BUT my RH300 G3 Plus does not run when I turn on the head. Is this normal or is there something wrong with fan in my RH300 G3 Plus head? Thank you for any time you can spend with this question.