diff --git a/custom_components/solaredge_modbus_multi/const.py b/custom_components/solaredge_modbus_multi/const.py
index 91b8c4d4..1f007271 100644
--- a/custom_components/solaredge_modbus_multi/const.py
+++ b/custom_components/solaredge_modbus_multi/const.py
@@ -28,6 +28,26 @@
 )
 
 
+class ModbusExceptions:
+    """An enumeration of the valid modbus exceptions."""
+
+    """
+        Copied from pymodbus source:
+        https://github.com/pymodbus-dev/pymodbus/blob/a1c14c7a8fbea52618ba1cbc9933c1dd24c3339d/pymodbus/pdu/pdu.py#L72
+    """
+
+    IllegalFunction = 0x01
+    IllegalAddress = 0x02
+    IllegalValue = 0x03
+    SlaveFailure = 0x04
+    Acknowledge = 0x05
+    SlaveBusy = 0x06
+    NegativeAcknowledge = 0x07
+    MemoryParityError = 0x08
+    GatewayPathUnavailable = 0x0A
+    GatewayNoResponse = 0x0B
+
+
 class RetrySettings(IntEnum):
     """Retry settings when opening a connection to the inverter fails."""
 
diff --git a/custom_components/solaredge_modbus_multi/hub.py b/custom_components/solaredge_modbus_multi/hub.py
index 77fe99d3..f7808a38 100644
--- a/custom_components/solaredge_modbus_multi/hub.py
+++ b/custom_components/solaredge_modbus_multi/hub.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import asyncio
+import importlib.metadata
 import logging
 from collections import OrderedDict
 
@@ -9,15 +10,11 @@
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import issue_registry as ir
 from homeassistant.helpers.entity import DeviceInfo
-
-try:
-    from pymodbus.client import AsyncModbusTcpClient
-    from pymodbus.constants import Endian
-    from pymodbus.exceptions import ConnectionException, ModbusIOException
-    from pymodbus.payload import BinaryPayloadDecoder
-    from pymodbus.pdu import ExceptionResponse, ModbusExceptions
-except ImportError:
-    raise ImportError("pymodbus is not installed, or pymodbus version is not supported")
+from pymodbus.client import AsyncModbusTcpClient
+from pymodbus.constants import Endian
+from pymodbus.exceptions import ConnectionException, ModbusIOException
+from pymodbus.payload import BinaryPayloadDecoder
+from pymodbus.pdu import ExceptionResponse
 
 from .const import (
     BATTERY_REG_BASE,
@@ -28,6 +25,7 @@
     ConfDefaultStr,
     ConfName,
     ModbusDefaults,
+    ModbusExceptions,
     RetrySettings,
     SolarEdgeTimeouts,
     SunSpecNotImpl,
@@ -35,6 +33,7 @@
 from .helpers import float_to_hex, parse_modbus_string
 
 _LOGGER = logging.getLogger(__name__)
+pymodbus_version = importlib.metadata.version("pymodbus")
 
 
 class SolarEdgeException(Exception):
@@ -197,6 +196,8 @@ def __init__(
             ),
         )
 
+        _LOGGER.debug(f"pymodbus version {pymodbus_version}")
+
     async def _async_init_solaredge(self) -> None:
         """Detect devices and load initial modbus data from inverters."""
 
@@ -501,26 +502,26 @@ async def modbus_read_holding_registers(self, unit, address, rcount):
         self._rr_address = address
         self._rr_count = rcount
 
-        kwargs = {"slave": self._rr_unit} if self._rr_unit else {}
-
         result = await self._client.read_holding_registers(
-            self._rr_address, self._rr_count, **kwargs
+            self._rr_address, count=self._rr_count, slave=self._rr_unit
         )
 
         if result.isError():
-            _LOGGER.debug(f"Unit {unit}: {result}")
 
             if type(result) is ModbusIOException:
                 raise ModbusIOError(result)
 
             if type(result) is ExceptionResponse:
                 if result.exception_code == ModbusExceptions.IllegalAddress:
+                    _LOGGER.debug(f"Unit {unit} Read IllegalAddress: {result}")
                     raise ModbusIllegalAddress(result)
 
                 if result.exception_code == ModbusExceptions.IllegalFunction:
+                    _LOGGER.debug(f"Unit {unit} Read IllegalFunction: {result}")
                     raise ModbusIllegalFunction(result)
 
                 if result.exception_code == ModbusExceptions.IllegalValue:
+                    _LOGGER.debug(f"Unit {unit} Read IllegalValue: {result}")
                     raise ModbusIllegalValue(result)
 
             raise ModbusReadError(result)
@@ -552,9 +553,8 @@ async def write_registers(self, unit: int, address: int, payload) -> None:
                 if not self.is_connected:
                     await self.connect()
 
-                kwargs = {"slave": self._wr_unit} if self._wr_unit else {}
                 result = await self._client.write_registers(
-                    self._wr_address, self._wr_payload, **kwargs
+                    self._wr_address, slave=self._wr_unit, values=self._wr_payload
                 )
 
                 self.has_write = address
@@ -595,19 +595,25 @@ async def write_registers(self, unit: int, address: int, payload) -> None:
 
                 if type(result) is ExceptionResponse:
                     if result.exception_code == ModbusExceptions.IllegalAddress:
-                        _LOGGER.debug(f"Write IllegalAddress: {result}")
+                        _LOGGER.debug(
+                            f"Unit {self._wr_unit} Write IllegalAddress: {result}"
+                        )
                         raise HomeAssistantError(
                             "Address not supported at device at ID {self._wr_unit}."
                         )
 
                     if result.exception_code == ModbusExceptions.IllegalFunction:
-                        _LOGGER.debug(f"Write IllegalFunction: {result}")
+                        _LOGGER.debug(
+                            f"Unit {self._wr_unit} Write IllegalFunction: {result}"
+                        )
                         raise HomeAssistantError(
                             "Function not supported by device at ID {self._wr_unit}."
                         )
 
                     if result.exception_code == ModbusExceptions.IllegalValue:
-                        _LOGGER.debug(f"Write IllegalValue: {result}")
+                        _LOGGER.debug(
+                            f"Unit {self._wr_unit} Write IllegalValue: {result}"
+                        )
                         raise HomeAssistantError(
                             "Value invalid for device at ID {self._wr_unit}."
                         )
diff --git a/custom_components/solaredge_modbus_multi/manifest.json b/custom_components/solaredge_modbus_multi/manifest.json
index af68c3c8..971a81cd 100644
--- a/custom_components/solaredge_modbus_multi/manifest.json
+++ b/custom_components/solaredge_modbus_multi/manifest.json
@@ -10,5 +10,5 @@
   "issue_tracker": "https://github.com/WillCodeForCats/solaredge-modbus-multi/issues",
   "loggers": ["custom_components.solaredge_modbus_multi"],
   "requirements": ["pymodbus>=3.6.6,<3.8"],
-  "version": "3.0.3"
+  "version": "3.0.4"
 }