Per-zone operation mode of a MELCloud Home ATW device, in the PascalCase
form the /context settings report. Mirrors the FTC zone modes (room
thermostat / fixed flow / weather curve, in heat or cool). The
device-update endpoint only accepts these values in camelCase — the API
lowers them on write, so callers always use this canonical form.
Per-zone operation mode of a MELCloud Home ATW device, in the PascalCase form the
/contextsettings report. Mirrors the FTC zone modes (room thermostat / fixed flow / weather curve, in heat or cool). The device-update endpoint only accepts these values in camelCase — the API lowers them on write, so callers always use this canonical form.