ConstReadonlycooling: "cooling"Readonlydefrost: "defrost"Readonlydhw: "dhw"Domestic hot water — the heat pump is currently heating the tank.
Readonlyheating: "heating"Readonlyidle: "idle"ReadonlylegionellaPrevention: "legionella"Legionella prevention cycle — a periodic high-temperature sanitisation of the hot water tank.
ATW top-level derived operational state — the cross-dialect vocabulary both facades answer: the FTC
OperationMode(Home's strings, Classic's numbers) normalized to one string set. TheHomeprefix is history, not a branch, likeClassicGroupState's.