Promote more clear message to warning

Author: bouwew

plugwise_usb/network/__init__.py

@@ -418,7 +418,7 @@ async def _discover_node(
         _LOGGER.debug("Starting the discovery of node %s with unknown NodeType", mac)
         node_info, node_ping = await self._controller.get_node_details(mac, ping_first)
         if node_info is None:
-            _LOGGER.debug("Node %s with unknown NodeType not responding", mac)
+            _LOGGER.warning("Node %s with unknown NodeType not responding, is it offline?", mac)
             self._registry_stragglers.append(mac)
             return False
         await self._create_node_object(mac, node_info.node_type)