Attachment 1
If your Dometic CCC2 digital thermostat is dead and you have no 12 VDC power up on the air conditioner electronic control modules this might be useful info
2014 Alpine and I’d bet all Alpines with CCC2 thermostat obtain their DC power from the Zone 1 air conditioner electronic control unit. It is hot all the time at the control module even with thermostat off as long as DC power is present. 12 volts DC is then routed over a non standard wired RJ11 telephone cable from control module down to CCC2 thermostat.
In the DC power distribution center the 15 amp fuse labeled “Kitchen” has a green/white wire at fuse bus ... this provides DC power to overhead power vent/fan mounted in the ceiling.
So if fuse is good but thermostat is dead and no DC power is on red/black wires on air conditioner electronic control module on roof this is where I’d start looking for a broken wire