Sounds like a leaky valve. When the jacks are retracted, the pump pumps oil into the bottom of the jacks pushing them up. This continues until the oil pressure gets up to something like 3000psi., at this point the controller assumes all the jacks are up and shuts the system off. If the valve is leaking and the pressure decreases while the coach sets around, the controller automatically assumes the jacks are down when the coach is started and if the emergency brake is released or put in gear, the controller will start the retract procedure again until the retract pressure gets up to the shut off point, then you're good to go.
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