diff --git a/.github/workflows/build-platformio.yml b/.github/workflows/build-platformio.yml
new file mode 100644
index 0000000..f86f44b
--- /dev/null
+++ b/.github/workflows/build-platformio.yml
@@ -0,0 +1,27 @@
+name: Ubuntu build
+
+on: [push,workflow_dispatch]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.platformio/.cache
+          key: ${{ runner.os }}-pio
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
+
+      - name: Build PlatformIO env:ESP32
+        run: pio run
diff --git a/src/config.h b/src/config.h
index 8826859..f56a658 100755
--- a/src/config.h
+++ b/src/config.h
@@ -33,12 +33,12 @@
      Target temperature: the target temperature will be tried to reach. The target temmperate can be provided via mqtt, via a touch display or both.
 */
 // --- Begin: list of presets. Choose exactly one. ---
-//#define fan_controlledByMQTT
+#define fan_controlledByMQTT
 //#define fan_controlledByTouch
 //#define fan_controlledByMQTTandTouch
 //#define climate_controlledByBME_targetByMQTT
 //#define climate_controlledByBME_targetByTouch
-#define climate_controlledByBME_targetByMQTTandTouch
+//#define climate_controlledByBME_targetByMQTTandTouch
 //#define climate_controlledByMQTT_targetByMQTT
 //#define climate_controlledByMQTT_targetByMQTTandTouch
 // --- End: list of presets --------------------------