Dell OpenManage Server Administrator Version 7.4 Command Line Interface Guide

To set both the upper and lower temperature warning threshold values to the recommended default value, type:

omconfig chassis temps index=0 warnthresh=default

or

omconfig mainsystem temps index=0 warnthresh=default

You cannot default one value and set another. In other words, if you set the minimum warning threshold value to the default value, you are also selecting the default value for the maximum warning threshold value.