Perhaps an email to Bob Ward at Outfitter would get you the answer to the location of the control board and also some suggestions on what could be causing your left rear jack to not work. On my Apex 8, the controllers is mounted inside the left rear generator storage compartment. Terry
My controller is in the generator compartment on my Apex9.5.
It had been suggested to leave the motor engaged and manually
jog the jack back and forth to unstick it.
I had a bad motor within 6 months of new and Happijac sent me a new one and paid for return shipping.
Thanks a lot for the suggestions! It is raining today so I won't go out to hunt for the module. I have sent a request to Outfitter as well.
It is definitely not in the generator compartment. I will see if I find it under the seat.
The jack is unstuck. It just didn't work anymore after a 3 hour drive. We found out when we wanted to raise the camper a bit to correct the position. It had shifted a bit and in doing so turned sidewise so that one of the fastguns got very close to the bed sheetmetal.