I have the same Equalizer system... There are some quirks... There is a fuse in you electrical bay underneath the driver in front of the tire... Its for the solenoid that activates the hydraulic pump. think there is another near the control panel... That aside you might try setting the null... with the power off press and hold auto level then power up the system. I know this does not make sense but the controller for the system will lock out the manual controls, if it gets or thinks the leveling parameters are outside the engineering specs from Travel Supreme... Your not really trying to tell the system what level is merely resetting it...
Your best bet is to call Equalizer in the morning.. I have found them extremely helpful.
2004 40DS02 Travel Supreme ISL 400
Jeep Grand Cherokee, Ford F150
M&G Brake & Break Away
Blue Ox Aventa LX Tow bar