I don't have much experience with the time history post processor /post26. Temperatures are from the nodal solution, not the element solution. Often when getting element results from nodes, the APDL commands do the averaging to the element centoid. But the documentation does not show anything in the items and comps that would get the temperature nodal solution. The BFE,TEMP is for applied temperature, not result temperatures that you want.
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v241/en/ans_cmd/Hlp_C_ESOL.html
I would normally loop through the result sets using SET command with /post1 and *GET the temperatures on nodes. See my earlier post on looping through results sets. Use the *GET documentation to figure out a command to get temp on node(s). Maybe someone in this post knows how to so it simpler with /post26 processor?
You are navigating away from the AIS Discovery experience