Furnace issue on 2017 3820 FK

[Stump Jumper 58]

New problem when I turn my furnace on. Dometic thermostat in living room works fine when turning furnace on but the rear thermostat in bedroom will not activate the furnace and the fan in the rear area in any mode. Works fine with air conditioner and heat pump setting.Did a reset on rear thermostat and same issue.
Any thoughts?

[jsb5717]

The bedroom TStat will run only the bedroom AC/Heat Pump. It shows the other functions but isn't connect to them. Only the living area TStat will operate the furnace as well as the living area AC/Heat Pump