diff --git a/goodwe/et.py b/goodwe/et.py
index 9f5c6f3..b38e815 100644
--- a/goodwe/et.py
+++ b/goodwe/et.py
@@ -3,7 +3,7 @@
 import logging
 from typing import Tuple
 
-from .exceptions import RequestRejectedException
+from .exceptions import RequestFailedException, RequestRejectedException
 from .inverter import Inverter
 from .inverter import OperationMode
 from .inverter import SensorKind as Kind
@@ -482,8 +482,11 @@ async def read_device_info(self):
             self._settings.update({s.id_: s for s in self.__settings_arm_fw_19})
         except RequestRejectedException as ex:
             if ex.message == 'ILLEGAL DATA ADDRESS':
-                logger.debug("Cannot read EcoModeV2 settings, using to EcoModeV1.")
+                logger.debug("EcoModeV2 settings not supported, switching to EcoModeV1.")
                 self._has_eco_mode_v2 = False
+        except RequestFailedException as ex:
+            logger.debug("Cannot read EcoModeV2 settings, switching to EcoModeV1.")
+            self._has_eco_mode_v2 = False
 
         # Check and add Peak Shaving settings added in (ETU fw 22)
         try:
@@ -491,8 +494,11 @@ async def read_device_info(self):
             self._settings.update({s.id_: s for s in self.__settings_arm_fw_22})
         except RequestRejectedException as ex:
             if ex.message == 'ILLEGAL DATA ADDRESS':
-                logger.debug("Cannot read PeakShaving setting, disabling it.")
+                logger.debug("PeakShaving setting not supported, disabling it.")
                 self._has_peak_shaving = False
+        except RequestFailedException as ex:
+            logger.debug("Cannot read _has_peak_shaving settings, disabling it.")
+            self._has_peak_shaving = False
 
     async def read_runtime_data(self) -> Dict[str, Any]:
         response = await self._read_from_socket(self._READ_RUNNING_DATA)
@@ -505,7 +511,7 @@ async def read_runtime_data(self) -> Dict[str, Any]:
                 data.update(self._map_response(response, self._sensors_battery))
             except RequestRejectedException as ex:
                 if ex.message == 'ILLEGAL DATA ADDRESS':
-                    logger.warning("Cannot read battery values, disabling further attempts.")
+                    logger.warning("Battery values not supported, disabling further attempts.")
                     self._has_battery = False
                 else:
                     raise ex
@@ -516,7 +522,7 @@ async def read_runtime_data(self) -> Dict[str, Any]:
                     self._map_response(response, self._sensors_battery2))
             except RequestRejectedException as ex:
                 if ex.message == 'ILLEGAL DATA ADDRESS':
-                    logger.warning("Cannot read battery 2 values, disabling further attempts.")
+                    logger.warning("Battery 2 values not supported, disabling further attempts.")
                     self._has_battery2 = False
                 else:
                     raise ex
@@ -527,7 +533,7 @@ async def read_runtime_data(self) -> Dict[str, Any]:
                 data.update(self._map_response(response, self._sensors_meter))
             except RequestRejectedException as ex:
                 if ex.message == 'ILLEGAL DATA ADDRESS':
-                    logger.warning("Cannot read extended meter values, disabling further attempts.")
+                    logger.warning("Extended meter values not supported, disabling further attempts.")
                     self._has_meter_extended = False
                     self._sensors_meter = tuple(filter(self._not_extended_meter, self._sensors_meter))
                     response = await self._read_from_socket(self._READ_METER_DATA)
@@ -545,7 +551,7 @@ async def read_runtime_data(self) -> Dict[str, Any]:
                 data.update(self._map_response(response, self._sensors_mppt))
             except RequestRejectedException as ex:
                 if ex.message == 'ILLEGAL DATA ADDRESS':
-                    logger.warning("Cannot read MPPT values, disabling further attempts.")
+                    logger.warning("MPPT values not supported, disabling further attempts.")
                     self._has_mppt = False
                 else:
                     raise ex
diff --git a/tests/sample/et/GW5K-BT_device_info.hex b/tests/sample/et/GW5K-BT_device_info.hex
new file mode 100644
index 0000000..3bb36a2
--- /dev/null
+++ b/tests/sample/et/GW5K-BT_device_info.hex
@@ -0,0 +1 @@
+aa55f703420000138800fe393530303042545532303357303030304757354b2d425420202000030003007c000b009330343032392d30332d53313030323034312d31312d533030828f
\ No newline at end of file
diff --git a/tests/test_et.py b/tests/test_et.py
index 8359564..d8e8d3b 100644
--- a/tests/test_et.py
+++ b/tests/test_et.py
@@ -28,6 +28,8 @@ async def _read_from_socket(self, command: ProtocolCommand) -> ProtocolResponse:
         if filename is not None:
             if 'ILLEGAL DATA ADDRESS' == filename:
                 raise RequestRejectedException('ILLEGAL DATA ADDRESS')
+            if 'NO RESPONSE' == filename:
+                raise RequestFailedException()
             with open(root_dir + '/sample/et/' + filename, 'r') as f:
                 response = bytes.fromhex(f.read())
                 if not command.validator(response):
@@ -1196,3 +1198,26 @@ def test_GW29K9_ET_runtime_data(self):
         self.assertSensor('apparent_power3', 0, 'VA', data)
 
         self.assertFalse(self.sensor_map, f"Some sensors were not tested {self.sensor_map}")
+
+
+class GW5K_BT_Test(EtMock):
+
+    def __init__(self, methodName='runTest'):
+        EtMock.__init__(self, methodName)
+        self.mock_response(self._READ_DEVICE_VERSION_INFO, 'GW5K-BT_device_info.hex')
+        self.mock_response(ModbusReadCommand(self.comm_addr, 47547, 6), 'NO RESPONSE')
+
+    def test_GW5K_BT_device_info(self):
+        self.loop.run_until_complete(self.read_device_info())
+        self.assertEqual('GW5K-BT', self.model_name)
+        self.assertEqual('95000BTU203W0000', self.serial_number)
+        self.assertEqual(5000, self.rated_power)
+        self.assertEqual(0, self.modbus_version)
+        self.assertEqual(254, self.ac_output_type)
+        self.assertEqual(3, self.dsp1_version)
+        self.assertEqual(3, self.dsp2_version)
+        self.assertEqual(124, self.dsp_svn_version)
+        self.assertEqual(11, self.arm_version)
+        self.assertEqual(147, self.arm_svn_version)
+        self.assertEqual('04029-03-S10', self.firmware)
+        self.assertEqual('02041-11-S00', self.arm_firmware)