diff --git a/homeassistant/components/hr_energy_qube/manifest.json b/homeassistant/components/hr_energy_qube/manifest.json
index 38cb452e094d..813f2bb6959c 100644
--- a/homeassistant/components/hr_energy_qube/manifest.json
+++ b/homeassistant/components/hr_energy_qube/manifest.json
@@ -7,6 +7,6 @@
   "integration_type": "hub",
   "iot_class": "local_polling",
   "loggers": ["python_qube_heatpump"],
-  "quality_scale": "bronze",
+  "quality_scale": "silver",
   "requirements": ["python-qube-heatpump==1.15.0"]
 }
diff --git a/homeassistant/components/hr_energy_qube/quality_scale.yaml b/homeassistant/components/hr_energy_qube/quality_scale.yaml
index 9652c324fe89..8bcd9975b02f 100644
--- a/homeassistant/components/hr_energy_qube/quality_scale.yaml
+++ b/homeassistant/components/hr_energy_qube/quality_scale.yaml
@@ -32,9 +32,7 @@ rules:
   unique-config-entry: done
 
   # Silver
-  action-exceptions:
-    status: exempt
-    comment: Integration does not register custom actions.
+  action-exceptions: done
   config-entry-unloading: done
   docs-configuration-parameters:
     status: exempt
diff --git a/tests/components/hr_energy_qube/test_water_heater.py b/tests/components/hr_energy_qube/test_water_heater.py
index 6519ed4baa91..1e522d0bc658 100644
--- a/tests/components/hr_energy_qube/test_water_heater.py
+++ b/tests/components/hr_energy_qube/test_water_heater.py
@@ -14,7 +14,7 @@ from homeassistant.components.water_heater import (
     STATE_HEAT_PUMP,
     STATE_PERFORMANCE,
 )
-from homeassistant.const import ATTR_ENTITY_ID, Platform
+from homeassistant.const import ATTR_ENTITY_ID, STATE_UNKNOWN, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er
@@ -61,15 +61,26 @@ async def test_set_temperature(
     mock_qube_client.write_setpoint.assert_awaited_once_with("setpoint_dhw", 55)
 
 
+@pytest.mark.parametrize(
+    ("side_effect", "return_value"),
+    [
+        (ConnectionError, None),
+        (None, False),
+    ],
+)
 async def test_set_temperature_failure(
     hass: HomeAssistant,
     mock_qube_client: MagicMock,
     mock_config_entry: MockConfigEntry,
+    side_effect: type[Exception] | None,
+    return_value: bool | None,
 ) -> None:
     """Test set temperature raises HomeAssistantError on failure."""
     await setup_integration(hass, mock_config_entry)
 
-    mock_qube_client.write_setpoint = AsyncMock(return_value=False)
+    mock_qube_client.write_setpoint = AsyncMock(
+        side_effect=side_effect, return_value=return_value
+    )
     with pytest.raises(HomeAssistantError):
         await hass.services.async_call(
             WATER_HEATER_DOMAIN,
@@ -108,6 +119,35 @@ async def test_set_operation_mode(
     )
 
 
+@pytest.mark.parametrize(
+    ("side_effect", "return_value"),
+    [
+        (ConnectionError, None),
+        (None, False),
+    ],
+)
+async def test_set_operation_mode_failure(
+    hass: HomeAssistant,
+    mock_qube_client: MagicMock,
+    mock_config_entry: MockConfigEntry,
+    side_effect: type[Exception] | None,
+    return_value: bool | None,
+) -> None:
+    """Test set operation mode raises HomeAssistantError on failure."""
+    await setup_integration(hass, mock_config_entry)
+
+    mock_qube_client.write_switch = AsyncMock(
+        side_effect=side_effect, return_value=return_value
+    )
+    with pytest.raises(HomeAssistantError):
+        await hass.services.async_call(
+            WATER_HEATER_DOMAIN,
+            SERVICE_SET_OPERATION_MODE,
+            {ATTR_ENTITY_ID: ENTITY_ID, ATTR_OPERATION_MODE: STATE_PERFORMANCE},
+            blocking=True,
+        )
+
+
 async def test_current_operation_boost(
     hass: HomeAssistant,
     mock_qube_client: MagicMock,
@@ -122,3 +162,19 @@ async def test_current_operation_boost(
     state = hass.states.get(ENTITY_ID)
     assert state is not None
     assert state.attributes["operation_mode"] == STATE_PERFORMANCE
+
+
+async def test_current_operation_unknown(
+    hass: HomeAssistant,
+    mock_qube_client: MagicMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test current operation is unknown when the boost coil cannot be read."""
+    mock_qube_client.read_all_switches.return_value["tapw_timeprogram_bms_forced"] = (
+        None
+    )
+    await setup_integration(hass, mock_config_entry)
+
+    state = hass.states.get(ENTITY_ID)
+    assert state is not None
+    assert state.state == STATE_UNKNOWN