My s9 is not reporting temp(chip1), but temp(chip2) is okay. I have installed the upgrade firmware to antminer-S9-all-201702272206-autofreq-user-Update2UBI-NF.tar.gz twice trying to fix the problem. The upgrade firmware s9_fix_upgrade.tar.gz and this will not load. I am running on the S9_12.0T submodel. I don't know if this submodel is fixed frequency or if I should try uploading a fixed frequency firmware update--I don't know if this is a fixed frequency unit. I would sincerely appreciate any help with this.
this is normal according to "bitmain" rep !
also many miners mention as well --- no stress unless hashing seems off or numbers seem high
peace