Let nibe library autodetect word swap on config (#161786)

homeassistant/components/nibe_heatpump/config_flow.py

@@ -96,7 +96,6 @@ async def validate_nibegw_input(
     """Validate the user input allows us to connect."""
 
     heatpump = HeatPump(Model[data[CONF_MODEL]])
-    heatpump.word_swap = True
     await heatpump.initialize()
 
     connection = NibeGW(
@@ -114,6 +113,9 @@ async def validate_nibegw_input(
             "Address already in use", "listening_port", "address_in_use"
         ) from exception
 
+    if heatpump.word_swap is None:
+        heatpump.word_swap = True
+
     try:
         await connection.verify_connectivity()
     except (ReadSendException, CoilWriteSendException) as exception: