core/homeassistant/components/airzone_cloud/icons.json

{
  "entity": {
    "sensor": {
      "cpu_usage": {
        "default": "mdi:cpu-32-bit"
      },
      "free_memory": {
        "default": "mdi:memory"
      },
      "thermostat_coverage": {
        "default": "mdi:signal"
      }
    }
  }
}