Originally Posted by Iggy
The bad part is it broke down at the in-laws location.
Seriously, if all the lights are flashing you need to reset the system.
Please read the manual I have attached. It looks like it is in the Latch Out Mode.
The manual extend/retract procedure in this manual is great for systems with a reversing motor. My 2011 Georgetown 327DS has a unidirectional motor/pump system which includes an additional control on the hydraulic manifold to control where the high pressure fluid is sent; to the top or the bottom of the jacks. Unfortunately, my system has had issues where a diode in the wiring harness gets fried and locks the control system in extend mode. With the system set in extend mode, the only way to retract the jacks is to drain the hydraulic fluid from the system.
Fortunately, the default position of the hydraulic control system is to retract the jacks. The control unit can be forced into this mode by disconnecting power to the solenoid that switches it into extend mode. This solenoid is located on the left side of the hydraulic control unit, below the quick flush connector.
Lippert has a replacement wiring harness for these units that resolves this problem. I burned out two harnesses before the revised one was available.
If your hydraulic control fails with this problem, your RV will rise up when you try to retract the jacks. If you notice this happening, hit the "off" button on the jack control panel or shut off the engine. Disconnect the solenoid then the jacks will retract normally. If you need to extend them again before getting them repaired, reconnect the solenoid and manually level the coach remembering that you can't retract the jacks until you unplug the solenoid again. The automatic levelling mode of operation will not work when the solenoid isn't functioning properly.