If you go back to the DOM, are the fans quiet again? I'd check the SEL on the motherboard - it should tell you why the fans are ramping up. Usually it's some IPMI-style program in the OS interfering with the normal BMC operation
thanks for the question.
As you said, while running DOM you are observing amber lit with full throttle.Looks like frusdr issues.can u please update with latest FRUSDR by selecting the proper chassis type.
let me know if you need any guidance.