Press mode. This will cycle between cool, fan, heat, furnace, and off.
If you have a 3 zone system then zone 2 will not have furnace.
Furnace is the oasis, hydronic heat. The other heat option is the heat pump.
2019 DSDP 4369 * FREIGHTLINER XCR * HWH ACTIVE AIR
NHSO (Newmar Hoot, Sevierville Original), Kindness Matters