diff --git a/adam_modbus/interface.py b/adam_modbus/interface.py
index 8078d8a..2d982f0 100644
--- a/adam_modbus/interface.py
+++ b/adam_modbus/interface.py
@@ -41,7 +41,10 @@ async def _send_and_receive(self, message: str) -> str:
                     loop.sock_recv(self.socket, 100), self.timeout
                 )
             except asyncio.TimeoutError:
-                raise AdamConnectionError("ADAM connection timed out")
+                raise AdamConnectionError("ADAM connection timed out (asyncio.TimeoutError))")
+            
+            except OSError:
+                raise AdamConnectionError("ADAM connection failed (OSError))")
 
             response = adam_out.decode().strip()
             return response