diff --git a/custom_components/askoheat/__init__.py b/custom_components/askoheat/__init__.py
index ca6692e..775f1f6 100644
--- a/custom_components/askoheat/__init__.py
+++ b/custom_components/askoheat/__init__.py
@@ -12,6 +12,7 @@
 from homeassistant.const import CONF_HOST, CONF_PORT, Platform
 from homeassistant.loader import async_get_loaded_integration
 
+from .api import AskoHeatModbusApiClient
 from .coordinator import (
     AskoheatConfigDataUpdateCoordinator,
     AskoheatEMADataUpdateCoordinator,
@@ -20,8 +21,6 @@
 )
 from .data import AskoheatData
 
-from .api import AskoHeatModbusApiClient
-
 if TYPE_CHECKING:
     from homeassistant.core import HomeAssistant
 
diff --git a/custom_components/askoheat/api.py b/custom_components/askoheat/api.py
index c6452ce..2b7b224 100644
--- a/custom_components/askoheat/api.py
+++ b/custom_components/askoheat/api.py
@@ -2,15 +2,13 @@
 
 from __future__ import annotations
 
+import struct
 from datetime import time
 from enum import ReprEnum
-from struct import unpack
-import struct
-from tracemalloc import start
 from typing import TYPE_CHECKING, Any, TypeVar, cast
 
 import numpy as np
-from numpy import byte, number
+from numpy import number
 from pymodbus.client import AsyncModbusTcpClient as ModbusClient
 
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
@@ -31,7 +29,7 @@
 )
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_op_desc import DATA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.const import (
     LOGGER,
 )
@@ -103,11 +101,11 @@ async def async_write_ema_data(
     async def async_read_par_data(self) -> AskoheatDataBlock:
         """Read PAR states."""
         data = await self.__async_read_input_registers_data(
-            PARAMETER_REGISTER_BLOCK_DESCRIPTOR.starting_register,
-            PARAMETER_REGISTER_BLOCK_DESCRIPTOR.number_of_registers,
+            PARAM_REGISTER_BLOCK_DESCRIPTOR.starting_register,
+            PARAM_REGISTER_BLOCK_DESCRIPTOR.number_of_registers,
         )
         LOGGER.debug("async_read_par_data %s", data)
-        return self.__map_data(PARAMETER_REGISTER_BLOCK_DESCRIPTOR, data)
+        return self.__map_data(PARAM_REGISTER_BLOCK_DESCRIPTOR, data)
 
     async def async_read_config_data(self) -> AskoheatDataBlock:
         """Read EMA states."""
diff --git a/custom_components/askoheat/api_desc.py b/custom_components/askoheat/api_desc.py
index a7be48a..e88187a 100644
--- a/custom_components/askoheat/api_desc.py
+++ b/custom_components/askoheat/api_desc.py
@@ -2,8 +2,6 @@
 
 from __future__ import annotations
 
-import ctypes
-from struct import pack
 import typing
 from abc import ABC
 from dataclasses import dataclass, field
diff --git a/custom_components/askoheat/api_par_desc.py b/custom_components/askoheat/api_par_desc.py
index 4924f16..9bb6b87 100644
--- a/custom_components/askoheat/api_par_desc.py
+++ b/custom_components/askoheat/api_par_desc.py
@@ -28,7 +28,7 @@
     AskoheatSensorEntityDescription,
 )
 
-PARAMETER_REGISTER_BLOCK_DESCRIPTOR = RegisterBlockDescriptor(
+PARAM_REGISTER_BLOCK_DESCRIPTOR = RegisterBlockDescriptor(
     starting_register=400,
     number_of_registers=56,
     sensors=[
diff --git a/custom_components/askoheat/binary_sensor.py b/custom_components/askoheat/binary_sensor.py
index 2571a9b..d141500 100644
--- a/custom_components/askoheat/binary_sensor.py
+++ b/custom_components/askoheat/binary_sensor.py
@@ -13,7 +13,7 @@
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_op_desc import DATA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.model import AskoheatBinarySensorEntityDescription
 
 from .entity import AskoheatEntity
@@ -41,7 +41,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.binary_sensors  # noqa: E501
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.binary_sensors
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator
diff --git a/custom_components/askoheat/config_flow.py b/custom_components/askoheat/config_flow.py
index 673dbef..756367e 100644
--- a/custom_components/askoheat/config_flow.py
+++ b/custom_components/askoheat/config_flow.py
@@ -17,7 +17,6 @@
     AskoheatModbusApiClientError,
 )
 from .const import (
-    CONF_DEVICE_UNIQUE_ID,
     DEFAULT_HOST,
     DEFAULT_PORT,
     DOMAIN,
@@ -71,7 +70,8 @@ async def async_step_user(
                 _errors["base"] = "unknown"
             else:
                 LOGGER.debug(
-                    "Successfully connected to askoheat instance, received parameters: %s",
+                    "Successfully connected to askoheat instance, "
+                    "received parameters: %s",
                     parameters,
                 )
                 article_name = parameters[f"sensor.{SensorAttrKey.PAR_ARTICLE_NAME}"]
diff --git a/custom_components/askoheat/coordinator.py b/custom_components/askoheat/coordinator.py
index 87b9ad7..eff8549 100644
--- a/custom_components/askoheat/coordinator.py
+++ b/custom_components/askoheat/coordinator.py
@@ -16,8 +16,8 @@
     DOMAIN,
     LOGGER,
     SCAN_INTERVAL_CONFIG,
-    SCAN_INTERVAL_OP_DATA,
     SCAN_INTERVAL_EMA,
+    SCAN_INTERVAL_OP_DATA,
 )
 
 if TYPE_CHECKING:
@@ -156,7 +156,8 @@ async def load_parameters(self, client: AskoHeatModbusApiClient) -> dict[str, An
 
     async def async_write(self, _: RegisterInputDescriptor, __: object) -> None:
         """Write parameter par block of Askoheat."""
-        raise UpdateFailed("Writing values to parameters not allowed")
+        msg = "Writing values to parameters not allowed"
+        raise UpdateFailed(msg)
 
 
 class AskoheatOperationDataUpdateCoordinator(AskoheatDataUpdateCoordinator):
@@ -177,7 +178,8 @@ async def _async_update_data(self) -> dict[str, Any]:
 
     async def async_write(self, _: RegisterInputDescriptor, __: object) -> None:
         """Write parameter data block of Askoheat."""
-        raise UpdateFailed("Writing values to data block not allowed")
+        msg = "Writing values to data block not allowed"
+        raise UpdateFailed(msg)
 
 
 def _map_data_block_to_dict(data: AskoheatDataBlock) -> dict[str, Any]:
diff --git a/custom_components/askoheat/entity.py b/custom_components/askoheat/entity.py
index 0389ead..b99d994 100644
--- a/custom_components/askoheat/entity.py
+++ b/custom_components/askoheat/entity.py
@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from typing import TypeVar
+from typing import TYPE_CHECKING, TypeVar
 
 from homeassistant.core import callback
 from homeassistant.helpers.device_registry import DeviceInfo
@@ -10,9 +10,11 @@
 
 from custom_components.askoheat.model import AskoheatEntityDescription
 
-from .const import ATTRIBUTION, CONF_DEVICE_UNIQUE_ID, LOGGER, DeviceKey
+from .const import ATTRIBUTION, DeviceKey
 from .coordinator import AskoheatDataUpdateCoordinator
-from .data import AskoheatConfigEntry
+
+if TYPE_CHECKING:
+    from .data import AskoheatConfigEntry
 
 E = TypeVar("E", bound=AskoheatEntityDescription)
 
diff --git a/custom_components/askoheat/number.py b/custom_components/askoheat/number.py
index c6c3e7d..943f0f8 100644
--- a/custom_components/askoheat/number.py
+++ b/custom_components/askoheat/number.py
@@ -9,7 +9,7 @@
 
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.const import LOGGER
 from custom_components.askoheat.model import (
     AskoheatNumberEntityDescription,
@@ -40,7 +40,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.number_inputs
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.number_inputs
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator
diff --git a/custom_components/askoheat/select.py b/custom_components/askoheat/select.py
index aaf8301..41868f9 100644
--- a/custom_components/askoheat/select.py
+++ b/custom_components/askoheat/select.py
@@ -8,7 +8,7 @@
 
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.const import LOGGER
 from custom_components.askoheat.coordinator import AskoheatDataUpdateCoordinator
 from custom_components.askoheat.model import (
@@ -34,7 +34,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.select_inputs
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.select_inputs
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator
diff --git a/custom_components/askoheat/sensor.py b/custom_components/askoheat/sensor.py
index 2df0af9..791c480 100644
--- a/custom_components/askoheat/sensor.py
+++ b/custom_components/askoheat/sensor.py
@@ -2,8 +2,6 @@
 
 from __future__ import annotations
 
-from datetime import date, datetime
-from decimal import Decimal
 from typing import TYPE_CHECKING, Any
 
 import numpy as np
@@ -14,16 +12,18 @@
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_op_desc import DATA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.model import (
     AskoheatDurationSensorEntityDescription,
     AskoheatSensorEntityDescription,
 )
 
 from .entity import AskoheatEntity
-from custom_components.askoheat import entity
 
 if TYPE_CHECKING:
+    from datetime import date, datetime
+    from decimal import Decimal
+
     from homeassistant.core import HomeAssistant
     from homeassistant.helpers.entity_platform import AddEntitiesCallback
     from homeassistant.helpers.typing import StateType
@@ -67,7 +67,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.sensors
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.sensors
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator
diff --git a/custom_components/askoheat/switch.py b/custom_components/askoheat/switch.py
index f4a37d5..7690f9d 100644
--- a/custom_components/askoheat/switch.py
+++ b/custom_components/askoheat/switch.py
@@ -9,7 +9,7 @@
 
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.const import LOGGER
 from custom_components.askoheat.model import AskoheatSwitchEntityDescription
 
@@ -38,7 +38,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.switches
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.switches
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator
diff --git a/custom_components/askoheat/text.py b/custom_components/askoheat/text.py
index 3d3f4af..3deadcf 100644
--- a/custom_components/askoheat/text.py
+++ b/custom_components/askoheat/text.py
@@ -6,7 +6,7 @@
 
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.const import LOGGER
 from custom_components.askoheat.coordinator import AskoheatDataUpdateCoordinator
 from custom_components.askoheat.model import (
@@ -32,7 +32,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.text_inputs
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.text_inputs
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator
diff --git a/custom_components/askoheat/time.py b/custom_components/askoheat/time.py
index 4f71ba5..d49a4f0 100644
--- a/custom_components/askoheat/time.py
+++ b/custom_components/askoheat/time.py
@@ -8,7 +8,7 @@
 
 from custom_components.askoheat.api_conf_desc import CONF_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.api_ema_desc import EMA_REGISTER_BLOCK_DESCRIPTOR
-from custom_components.askoheat.api_par_desc import PARAMETER_REGISTER_BLOCK_DESCRIPTOR
+from custom_components.askoheat.api_par_desc import PARAM_REGISTER_BLOCK_DESCRIPTOR
 from custom_components.askoheat.const import LOGGER
 from custom_components.askoheat.coordinator import AskoheatDataUpdateCoordinator
 from custom_components.askoheat.model import AskoheatTimeEntityDescription
@@ -32,7 +32,7 @@ async def async_setup_entry(
         for entity_description, coordinator in {
             **{
                 entity_description: entry.runtime_data.par_coordinator
-                for entity_description in PARAMETER_REGISTER_BLOCK_DESCRIPTOR.time_inputs
+                for entity_description in PARAM_REGISTER_BLOCK_DESCRIPTOR.time_inputs
             },
             **{
                 entity_description: entry.runtime_data.ema_coordinator