Most of the trends are flat on these trends.
H1:HPI-PUMP_EY_CONTROL_VOUT had a step up from 505 to 515 around May 23rd.
This CLOSES FAMIS #4533.
I suspect temperature when ever the pump output changes. Sure enough, the attached plot shows the VEA temp stepping just as the VOUT (pump speed) steps. Corey's time span just misses the much larger gyrations seen on the VEA temp and the pump speed.