I want to update this thread about how I "fixed" it,
Well, 1 GREEEN 8 RED seems indicate something wrong with motor 1, especially the harness. After manual override and drove back home I start to order some harness from Amazon. Search "Lippert slide harness" can give a lot. Before I get those harness, tried to slide it out a bit to access to the motor from bedroom. What I found is motor 1 is not stand well, I can shake it with my figures while motor 2 is very solid. I checked the secure screw from outside. Even it is in the place, the screw is pretty loose, tried to enforce it but did not help. Went to lowes, brought similar screw, still does not help;
To double confirm it is motor1's issue; I switched from controller side, put connector for Motor 1 to Motor2, I am hoping it will flash 2 GREEN 8 RED but nope, it is still 1G8R.. weird.
Entegra coach has a very stupid design that Lipper slide controller is under the bed so once slide in, you have no way to access the controller. I want to use manual override to slide it out but not the controller is not accessable. From the pic, buttom left corner is where the controller sit. To access it I need to remove screw and a big piece of solid wood, then see what the pic shows. I am not sure why they need to hide it here.
By tried those triage steps it seems I need someone to help me. Called dealer around me, either they do not want to fix RV not bought from them, or booked out through June.
Tried google to find some mobile RV technician, either they ask $200 trip charge plus $200/h, or they are bit far from me so not willing to help. I said I can drive to them but no response after that..
Today I got the harness. What I plan to do is, if the Hall sensor from Motor 1 is not working, I can jump the Hall signal from Motor2 to Motor1 to fool controller. I guess those are 1.8v or 3.3v very low speed signals so drive 2 should be fine. The controller will get faked synced hall sensor signal from both and keep both move in/out. I jumped the cable, it worked fine!!
I will use it as a temp solution until I can find a good RV shop to fix it;