One leveling jack not working?

[JouppiOutdoors]

We are full time in our 2019 28bh. We have only had it 4 days, during the leveling process today I got a LR jack error. The jack was that only working intermittently. I could not get it low enough to stabilize the LR of the unit so after many failed attempts to resolve this I ran it down with my drill and 5/16 socket. It is totally inoperable now while all the other jacks work fine. I’m calling Grand Design and Lippert tomorrow but just wondering if anyone has seen this? Thanks!

[huntr70]

There is a procedure in the Lippert Ground Control manual to rest them. It specifically mentions jack errors.

[JouppiOutdoors]

I went through the procedure, 3 jacks work but the left rear is still inoperable

[huntr70]

Have you checked the wire connections at that jack?

I would also check the connections at the control box in the front compartment. Plugs come loose sometimes.