2017 HG 356QB Master Bed A/C Question

[UGA33]

Test run this weekend with the 2017 356QB.

Only thing I can’t get figured out is the thermostat for the master bedroom/bathroom. It is the top t-stat.

High of 80 today. Started both t-stats on Cool and both in Auto at 74° today. Main room cycled on and off as expected. One for master ran constantly. It was an icebox up there.

When I pushed the mode button, the green indicator went below the cool setting and it was set to 66°. Moved that up to 74 and made sure it was in auto for the fan, and it carried on as normal.

What exactly is that last green light representing on the top t-stat without a description? Also, where is the temp sensor located for the master if anyone knows? I can’t find it.

[Ampdraw]

Its just the same internals used on both thermostats so they both have the green furnace light, since the unit that stat is controlling must not have heat they didn't label it.