Index: firmware/App/Controllers/TemperatureSensors.c
===================================================================
diff -u -ra6930e0a28c615868a988a7d0e9bf7425a781af6 -rbe027f8c9bee75f07267f7a9ab5635bbb02df86e
--- firmware/App/Controllers/TemperatureSensors.c	(.../TemperatureSensors.c)	(revision a6930e0a28c615868a988a7d0e9bf7425a781af6)
+++ firmware/App/Controllers/TemperatureSensors.c	(.../TemperatureSensors.c)	(revision be027f8c9bee75f07267f7a9ab5635bbb02df86e)
@@ -410,12 +410,17 @@
             temperature = temperature + ( positiveTCInverserCoeffs [ i ] * pow(correctedVoltage, i) );
         }
     }
+    else
+    {
+        //TODo Alarm
+        temperature = -1.0;
+    }
 
     if ( TCIndex == TEMPSENSORS_PRIMARY_HEATER_THERMO_COUPLE_TEMP_SENSOR )
     {
         temperatureValues [ TEMPSENSORS_PRIMARY_HEATER_INTERNAL_TEMP ].data = temperature;
     }
-    else if ( TCIndex == TEMPSENSORS_TRIMMER_HEATER_THERMO_COUPLE_TEMP_SENSOR )
+    else
     {
         temperatureValues [ TEMPSENSORS_TRIMMER_HEATER_INTERNAL_TEMP ].data = temperature;
     }