Tried pulling the Thermal cable connector and re-booted - showed 0C/32F but no difference to fan noise, fans 1 & 2 are still around 43%, fan 3 is 34 % and fan 4 is 6%, have now replaced the cable.
Tried new Firmware updates but they are not accepted by my model ML350e gen 8 Server.
Come on HP it has been six months now since the first post, its about time a solution was found for this problem, besides the fan noise it is an excellent Server.