core/homeassistant/components/climate/translations/cy.json

{
    "state": {
        "_": {
            "auto": "Awto",
            "cool": "Sefydlog",
            "dry": "Sych",
            "fan_only": "Fan yn unig",
            "heat": "Gwres",
            "off": "i ffwrdd"
        }
    },
    "title": "Hinsawdd"
}