core/homeassistant/components/nuheat/strings.json

{
  "config": {
    "error": {
      "unknown": "[%key:common::config_flow::error::unknown%]",
      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
      "invalid_thermostat": "The thermostat serial number is invalid."
    },
    "abort": {
      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
    },
    "step": {
      "user": {
        "title": "Connect to the NuHeat",
        "description": "You will need to obtain your thermostat\u2019s numeric serial number or ID by logging into https://MyNuHeat.com and selecting your thermostat(s).",
        "data": {
          "username": "[%key:common::config_flow::data::username%]",
          "password": "[%key:common::config_flow::data::password%]",
          "serial_number": "Serial number of the thermostat."
        }
      }
    }
  }
}