diff --git a/tests/configs/service_reload_while_on.yaml b/tests/configs/service_reload_while_on.yaml
new file mode 100644
index 0000000..671b9a2
--- /dev/null
+++ b/tests/configs/service_reload_while_on.yaml
@@ -0,0 +1,74 @@
+irrigation_unlimited:
+  granularity: 10
+  refresh_interval: 2000
+  testing:
+    enabled: true
+    speed: 1.0
+    output_events: false
+    show_log: false
+    autoplay: false
+    times:
+      - name: "1-Reload while on"
+        start: "2021-01-04 06:00"
+        end: "2021-01-04 07:00"
+        results:
+          - { t: "2021-01-04 06:05:00", c: 1, z: 0, s: 1 }
+          - { t: "2021-01-04 06:05:00", c: 1, z: 1, s: 1 }
+          - { t: "2021-01-04 06:10:00", c: 1, z: 2, s: 1 }
+          - { t: "2021-01-04 06:10:00", c: 2, z: 0, s: 1 }
+          - { t: "2021-01-04 06:10:00", c: 2, z: 1, s: 1 }
+          - { t: "2021-01-04 06:15:00", c: 1, z: 1, s: 0 }
+          - { t: "2021-01-04 06:15:00", c: 1, z: 3, s: 1 }
+          - { t: "2021-01-04 06:15:00", c: 2, z: 2, s: 1 }
+          - { t: "2021-01-04 06:15:00", c: 3, z: 0, s: 1 }
+          - { t: "2021-01-04 06:15:00", c: 3, z: 1, s: 1 }
+          - { t: "2021-01-04 06:16:10", c: 1, z: 3, s: 0 }
+          - { t: "2021-01-04 06:16:10", c: 1, z: 2, s: 0 }
+          - { t: "2021-01-04 06:16:10", c: 3, z: 1, s: 0 }
+          - { t: "2021-01-04 06:16:10", c: 3, z: 0, s: 0 }
+          - { t: "2021-01-04 06:16:10", c: 2, z: 1, s: 0 }
+          - { t: "2021-01-04 06:16:10", c: 2, z: 2, s: 0 }
+          - { t: "2021-01-04 06:16:10", c: 2, z: 0, s: 0 }
+  controllers:
+    - name: "Contoller 1"
+      zones:
+        - name: "C1-Z1"
+          schedules:
+            - time: "06:05"
+              duration: "00:10"
+        - name: "C1-Z2"
+          schedules:
+            - time: "06:10"
+              duration: "00:10"
+        - name: "C1-Z3"
+          schedules:
+            - time: "06:15"
+              duration: "00:10"
+    - name: "Controller 2"
+      zones:
+        - name: "C2-Z1"
+          schedules:
+            - time: "06:10"
+              duration: "00:10"
+        - name: "C2-Z2"
+          schedules:
+            - time: "06:15"
+              duration: "00:10"
+        - name: "C2-Z3"
+          schedules:
+            - time: "06:20"
+              duration: "00:10"
+    - name: "Controller 3"
+      zones:
+        - name: "C3-Z1"
+          schedules:
+            - time: "06:15"
+              duration: "00:10"
+        - name: "C3-Z2"
+          schedules:
+            - time: "06:20"
+              duration: "00:10"
+        - name: "C3-Z3"
+          schedules:
+            - time: "06:25"
+              duration: "00:10"
diff --git a/tests/test_reload.py b/tests/test_reload.py
index 67ec848..8f078a7 100644
--- a/tests/test_reload.py
+++ b/tests/test_reload.py
@@ -2,6 +2,7 @@
 from unittest.mock import patch
 
 import pytest
+from datetime import datetime
 import homeassistant.core as ha
 from homeassistant.config import load_yaml_config_file
 from homeassistant.setup import async_setup_component
@@ -143,3 +144,53 @@ async def test_service_reload_extend_shrink(
     start_time = await begin_test(1, coordinator)
     await finish_test(hass, coordinator, start_time, True)
     check_summary(full_path, coordinator)
+
+
+async def test_service_reload_shrink_while_on(
+    hass: ha.HomeAssistant,
+    skip_start,
+    skip_dependencies,
+    skip_history,
+):
+    """Test reload service call reducing entities while on."""
+
+    await async_setup_component(hass, DOMAIN, CONFIG_SCHEMA(MOCK_CONFIG))
+    await hass.async_block_till_done()
+    coordinator: IUCoordinator = hass.data[DOMAIN][COORDINATOR]
+
+    full_path = test_config_dir + "service_reload_while_on.yaml"
+    with patch(
+        "homeassistant.core.Config.path",
+        return_value=full_path,
+    ):
+        await hass.services.async_call(
+            DOMAIN,
+            SERVICE_RELOAD,
+            None,
+            True,
+        )
+    # Reload while entities are on.
+    start_time = await begin_test(1, coordinator)
+    await run_until(
+        hass,
+        coordinator,
+        start_time,
+        datetime.fromisoformat("2021-01-04 06:16:00+00:00"),
+        True,
+    )
+    full_path = test_config_dir + "service_reload_1.yaml"
+    with patch(
+        "homeassistant.core.Config.path",
+        return_value=full_path,
+    ):
+        await hass.services.async_call(
+            DOMAIN,
+            SERVICE_RELOAD,
+            None,
+            True,
+        )
+
+    # The reload mid stream has blown away our test and results. So
+    # don't attempt to finish or check results, there are none.
+    # await finish_test(hass, coordinator, start_time, True)
+    # check_summary(full_path, coordinator)