Ours quit extending after my stepson power washed the coach, which supports Fred’s statement. I tried testing and disassembling it but ran into the issue that the unit must be removed from the motorhome to do so. I believe the cylindrical (aka tubular) motor has to be replaced, but even if I finagled the rear end cap off to do so, the main awning’s arm prevents sliding the motor out that way. The motor won’t slide out the front cap end.
The dilemma is that because the unit froze up while in the closed position, I can’t get at the mounting screws to take it off the rig. Removing the main awning or part of it is likely necessary, but after hours and days in 2019 spent testing the circuitry behind the overdoor panel and trying to mechanically get at the motor, I’m now gong to let a more experienced tech in Bend tackle this one.
The fact that you can hear the motor run implies a drive gear has become loose or stripped, but to get at that you likely will have the same problem I do. I don’t think the problem is electronic, but rather drive engagement. Don’t quote me, but I’m thinking that like many Carefree units the motor and drive are only sold as one unit. There were parts diagrams on Carefree’s website as I recall, but they made many different models and versions of models. You have to find the right one. If I get a chance I’ll see if I have a manual or service instructions that are different from what’s at Coach Assist, but your awning model may be different.
Joel