Index: PersistentAlarm.h
===================================================================
diff -u -rd738232bc2e11aee687d4c62fc457577825a1b30 -rb3b86e2878be42dac011ea808f114c085e99fe9e
--- PersistentAlarm.h	(.../PersistentAlarm.h)	(revision d738232bc2e11aee687d4c62fc457577825a1b30)
+++ PersistentAlarm.h	(.../PersistentAlarm.h)	(revision b3b86e2878be42dac011ea808f114c085e99fe9e)
@@ -34,6 +34,7 @@
 typedef enum PersistentAlarm
 {
 #ifdef _HD_
+    PERSISTENT_ALARM_AIR_TRAP_ILLEGAL_LEVELS,           ///< Air trap level sensors reporting illegal value combination
 #endif
 #ifdef _DG_
     PERSISTENT_ALARM_INLET_WATER_HIGH_TEMPERATURE,      ///< Inlet water high temperature persistent alarm