Flap load relief light illuminates to indicate the IAS is approaching the limit for the selected flap setting.....common misconception.....it does not indicate the flaps have blown back.....YET!
If F30 is selected the TE flap will blow back to F25 at 183 kts IAS
As the speed reduces the flap will then run automatically to F30 at 165 kts.
If F25 is selected the TE flap will auto run back to F20 at IAS 208 kts and auto extend back to the F25 posn at 191 kts IAS..........
It is written in a confusing manner, if you think of it as I have written above then hopefully all will be clear.......I did say hopefully!