diff --git a/modules/core/controller.py b/modules/core/controller.py
index 9749a99..3bb8529 100644
--- a/modules/core/controller.py
+++ b/modules/core/controller.py
@@ -133,8 +133,9 @@ class FermenterController(ControllerBase, ActorController, SensorController):
 
     @cbpi.try_catch(None)
     def cooler_off(self):
+
         f = self.api.cache.get("fermenter").get(self.fermenter_id)
-        if self.cooler is not None:
+        if f.cooler is not None:
             self.actor_off(int(f.cooler))
 
     @cbpi.try_catch(None)