diff --git a/packages/modules/common/hardware_check.py b/packages/modules/common/hardware_check.py
index 01abc892da..6ea7dc4da9 100644
--- a/packages/modules/common/hardware_check.py
+++ b/packages/modules/common/hardware_check.py
@@ -1,3 +1,4 @@
+import logging
 import pymodbus
 from typing import Any, Optional, Protocol, Tuple, Union
 
@@ -6,6 +7,9 @@
 from modules.common.fault_state import FaultState
 from modules.common.modbus import ModbusSerialClient_, ModbusTcpClient_
 
+log = logging.getLogger(__name__)
+
+
 EVSE_MIN_FIRMWARE = 7
 
 OPEN_TICKET = (" Bitte nehme bei anhaltenden Problemen über die Support-Funktion in den Einstellungen Kontakt mit " +
@@ -97,9 +101,7 @@ def request_and_check_hardware(self: ClientHandlerProtocol,
             else:
                 raise Exception(meter_error_msg + OPEN_TICKET)
         elif evse_check_passed and meter_check_passed and meter_error_msg is not None:
-            if meter_error_msg != METER_NO_SERIAL_NUMBER:
-                meter_error_msg += OPEN_TICKET
-            fault_state.warning(meter_error_msg)
+            fault_state.warning(meter_error_msg + OPEN_TICKET)
         if evse_check_passed is False:
             if meter_error_msg is not None:
                 raise Exception(EVSE_BROKEN + " " + meter_error_msg + OPEN_TICKET)
@@ -112,7 +114,7 @@ def check_meter(self: ClientHandlerProtocol) -> Tuple[bool, Optional[str], Count
             with self.client:
                 counter_state = self.meter_client.get_counter_state()
             if counter_state.serial_number == "0" or counter_state.serial_number is None:
-                return True, METER_NO_SERIAL_NUMBER, counter_state
+                log.warning(METER_NO_SERIAL_NUMBER)
             return True, _check_meter_values(counter_state), counter_state
         except Exception:
             return False, METER_PROBLEM, None
diff --git a/packages/modules/common/hardware_check_test.py b/packages/modules/common/hardware_check_test.py
index d4d2b13e44..07336b5a1a 100644
--- a/packages/modules/common/hardware_check_test.py
+++ b/packages/modules/common/hardware_check_test.py
@@ -8,8 +8,7 @@
 from modules.common.component_state import CounterState, EvseState
 from modules.common.evse import Evse
 from modules.common.hardware_check import (
-    EVSE_BROKEN, LAN_ADAPTER_BROKEN, METER_BROKEN_VOLTAGES, METER_NO_SERIAL_NUMBER,
-    METER_PROBLEM, OPEN_TICKET, USB_ADAPTER_BROKEN,
+    EVSE_BROKEN, LAN_ADAPTER_BROKEN, METER_BROKEN_VOLTAGES, METER_PROBLEM, OPEN_TICKET, USB_ADAPTER_BROKEN,
     SeriesHardwareCheckMixin, _check_meter_values)
 from modules.common.modbus import NO_CONNECTION, ModbusSerialClient_, ModbusTcpClient_
 from modules.conftest import SAMPLE_IP, SAMPLE_PORT
@@ -112,8 +111,7 @@ def test_check_meter_values_voltages(voltages, power, expected_msg, monkeypatch)
 
 @patch('modules.common.hardware_check.ClientHandlerProtocol')
 @pytest.mark.parametrize("serial_number, voltages, expected",
-                         [("0", [230]*3, (True, METER_NO_SERIAL_NUMBER, CounterState)),
-                          (12345, [230]*3, (True, None, CounterState)),
+                         [(12345, [230]*3, (True, None, CounterState)),
                           (Exception(), [230]*3, (False, METER_PROBLEM, None))])
 def test_check_meter(
     MockClientHandlerProtocol: Mock,