diff --git a/Climate/bosch_bth-ra_control_dev.yaml b/Climate/bosch_bth-ra_control_dev.yaml
index e0bf4c3..13ae201 100644
--- a/Climate/bosch_bth-ra_control_dev.yaml
+++ b/Climate/bosch_bth-ra_control_dev.yaml
@@ -159,11 +159,16 @@ actions:
         - service: switch.turn_off
           target:
             entity_id: "{{ window_detection_entity }}"
-        - action: climate.set_temperature
-          target:
-            entity_id: !input trv
-          data:
-            temperature: "{{ scheduled_temperature | float }}"
+        - if:
+            - condition: template
+              value_template: >
+                {{ scheduled_temperature is not none }}
+          then:
+            - action: climate.set_temperature
+              target:
+                entity_id: !input trv
+              data:
+                temperature: "{{ scheduled_temperature | float }}"
       alias: Setze Fenster auf geschlossen
   # temperature sensor sync
   - choose: