diff --git a/keba/kebaproductinfo.cpp b/keba/kebaproductinfo.cpp
index 34660d97..dc207a42 100644
--- a/keba/kebaproductinfo.cpp
+++ b/keba/kebaproductinfo.cpp
@@ -77,6 +77,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
         m_connector = ConnectorCable;
         qCDebug(dcKeba()) << "Connector: Cable";
     } else {
+        qCWarning(dcKeba()) << "Invalid at step: connector" << connectorValue;
         m_isValid = false;
         return;
     }
@@ -89,6 +90,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
     } else if (connectorTypeValue.toLower() == QChar('s')) {
         m_connectorType = Shutter;
     } else {
+        qCWarning(dcKeba()) << "Invalid at step: connectorType" << connectorTypeValue;
         m_isValid = false;
         return;
     }
@@ -112,7 +114,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
             m_current = Current13A;
             qCDebug(dcKeba()) << "Current (Shutter): 13A";
         } else {
-            qCWarning(dcKeba()) << "Current (Shutter): valeur inconnue" << connectorCurrentValue;
+            qCWarning(dcKeba()) << "Invalid at step: current (Shutter)" << connectorCurrentValue;
             m_isValid = false;
             return;
         }
@@ -125,6 +127,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
     } else if (connectorCurrentValue.isDigit() && connectorTypeValue == QChar('4')) {
         m_current = Current32A;
     } else {
+        qCWarning(dcKeba()) << "Invalid at step: current" << connectorCurrentValue << "connectorType" << connectorTypeValue;
         m_isValid = false;
         return;
     }
@@ -149,6 +152,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
         m_cable = Cable5p5m;
         qCDebug(dcKeba()) << "Cable: 5.5 meter";
     } else {
+        qCWarning(dcKeba()) << "Invalid at step: cable" << cableValue;
         m_isValid = false;
         return;
     }
@@ -186,7 +190,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
         m_series = SeriesSpecial;
         qCDebug(dcKeba()) << "Series: Special" + m_productString.right(2);
     } else {
-        qCWarning(dcKeba()) << "Series: Unknown" << productString << "value:" << seriesValue;
+        qCWarning(dcKeba()) << "Invalid at step: series" << seriesValue;
         m_isValid = false;
         return;
     }
@@ -198,6 +202,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
     } else if (phaseCountValue == QChar('2')) {
         m_phaseCount = 3;
     } else {
+        qCWarning(dcKeba()) << "Invalid at step: phaseCount" << phaseCountValue;
         m_isValid = false;
         return;
     }
@@ -221,6 +226,7 @@ KebaProductInfo::KebaProductInfo(const QString &productString) :
         m_meter = MeterCalibratedNationalCertified;
         qCDebug(dcKeba()) << "Meter: Calibrated meter (national certified)";
     } else {
+        qCWarning(dcKeba()) << "Invalid at step: meter" << meterValue;
         m_isValid = false;
         return;
     }