diff --git a/src/main/kotlin/dev/asdf00/visionfive/hc/GlobalDataStore.kt b/src/main/kotlin/dev/asdf00/visionfive/hc/GlobalDataStore.kt
index 7e57426..5a1bc02 100644
--- a/src/main/kotlin/dev/asdf00/visionfive/hc/GlobalDataStore.kt
+++ b/src/main/kotlin/dev/asdf00/visionfive/hc/GlobalDataStore.kt
@@ -10,11 +10,11 @@ object GlobalDataStore {
     @Volatile var lowerTime = Date()
     @Volatile var resetTime = Date()
 
-    @Volatile var targetTemp = 22.5
-    @Volatile var reduction = 2.0
-    @Volatile var pval = 0.0
-    @Volatile var ival = 1.0
-    @Volatile var dval = 2.0
+    @Volatile var targetTemp: Double = 22.5
+    @Volatile var reduction: Double = 2.0
+    @Volatile var pval: Double = 0.1
+    @Volatile var ival: Double = 1.0 / 120
+    @Volatile var dval: Double = 0.0
 
     const val API = "https://api.open-meteo.com/v1/forecast?latitude=47.6649&longitude=14.3401&daily=sunshine_duration,daylight_duration,sunrise&hourly=temperature_2m&timezone=Europe/Berlin&forecast_days=1&format=json&timeformat=unixtime"
 }
\ No newline at end of file
diff --git a/src/main/kotlin/dev/asdf00/visionfive/hc/control/PidController.kt b/src/main/kotlin/dev/asdf00/visionfive/hc/control/PidController.kt
index bc55c52..15b9c1a 100644
--- a/src/main/kotlin/dev/asdf00/visionfive/hc/control/PidController.kt
+++ b/src/main/kotlin/dev/asdf00/visionfive/hc/control/PidController.kt
@@ -15,7 +15,7 @@ class PidController(vararg val controlUnits: Controller) {
 
     private fun step(actual: Double, desired: Double): Double {
         val error = desired - actual
-        errorInt = Math.clamp(errorInt + error, 0.0, 1.0)
+        errorInt = Math.clamp(errorInt + error, 0.0 / GlobalDataStore.ival, 1.0 / GlobalDataStore.ival)
         val rv = GlobalDataStore.pval * error +
                 GlobalDataStore.ival * errorInt +
                 GlobalDataStore.dval * (error - errorLast)