Based on my MH there is a hydraulic pump that gets power directly (through a DC solenoid) from the battery bay with its own DC breaker. So if the pump won't run when tasked to by the panel it could be an open breaker, a bad solenoid, a bad pump motor, or a problem in the control panel/circuits. I'd get out a voltmeter and check the pump motor to see if it is getting the 12 VDC when tasked. Go from there.
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad