diff --git a/esp32/include/ControllerConfiguration.h b/esp32/include/ControllerConfiguration.h
index d39d940..b0b1d92 100644
--- a/esp32/include/ControllerConfiguration.h
+++ b/esp32/include/ControllerConfiguration.h
@@ -80,7 +80,7 @@
 /** \addtogroup Configuration
  *  @{
  */
-#define FIRMWARE_VERSION "2.7 HW0.10b"
+#define FIRMWARE_VERSION "2.71 HW0.10b"
 
 #define TIMED_LIGHT_PIN CUSTOM1_PIN5
 #define FLOWMETER_PIN CUSTOM1_PIN1
diff --git a/esp32/include/LogDefines.h b/esp32/include/LogDefines.h
index 78285f5..1873ec6 100644
--- a/esp32/include/LogDefines.h
+++ b/esp32/include/LogDefines.h
@@ -33,6 +33,9 @@
 #define LOG_VERY_COLD_WATER "Water potentially frozen, ignoring pump request"
 #define LOG_VERY_COLD_WATER_CODE -7
 
+#define LOG_PUMP_FULLTANK_MESSAGE "Water Sensor distance unrealistic"
+#define LOG_PUMP_FULLTANK_CODE 3
+
 //msg is dynamic defined
 #define LOG_PUMP_INEFFECTIVE -4
 #define LOG_PUMP_STARTED_CODE 10
diff --git a/esp32/src/main.cpp b/esp32/src/main.cpp
index 12f59bd..c2e5afc 100644
--- a/esp32/src/main.cpp
+++ b/esp32/src/main.cpp
@@ -1142,6 +1142,10 @@ bool isLowLight = (mSolarVoltage <= SOLAR_CHARGE_MAX_VOLTAGE);
   {
     //surface of water is still nearer the sensor than required to cover the pumps
     hasWater = waterRawSensor.getAverage() < waterLevelMin.get();
+    if (waterRawSensor.getAverage() > waterLevelMax.get()) {
+      log(LOG_LEVEL_ERROR, LOG_PUMP_FULLTANK_MESSAGE, LOG_PUMP_FULLTANK_CODE);
+      hasWater = true;
+    }
   }
 
   // FIXME no water warning message