Index: firmware/App/Modes/ModeFault.c
===================================================================
diff -u -r044903d0b2e33b33afe7bf27206e77f3ecbfdda2 -rbad6e3217cf7ed758db71f5aef9372838e6d7b61
--- firmware/App/Modes/ModeFault.c	(.../ModeFault.c)	(revision 044903d0b2e33b33afe7bf27206e77f3ecbfdda2)
+++ firmware/App/Modes/ModeFault.c	(.../ModeFault.c)	(revision bad6e3217cf7ed758db71f5aef9372838e6d7b61)
@@ -96,6 +96,9 @@
         sendTreatmentLogDataToUI();
     }
 
+    // Release RTC in case the RTC semaphore was not released prior to transitioning to fault mode.
+    // In fault mode, the non-volatile data mgmt POST might be run again so the RTC has to be available. Also,
+    // the RTC time is read every second which requires the semaphore.
     releaseSemaphore( SEMAPHORE_RTC );
 
     return faultState;