core/homeassistant/components/coolmaster/icons.json

{
  "entity": {
    "binary_sensor": {
      "clean_filter": {
        "default": "mdi:air-filter"
      }
    },
    "button": {
      "reset_filter": {
        "default": "mdi:air-filter"
      }
    },
    "sensor": {
      "error_code": {
        "default": "mdi:alert"
      }
    }
  }
}