Index: firmware/App/Modes/ModeHeatDisinfect.c
===================================================================
diff -u -r5109bb981cab2025fcb9de33e303d046085efa18 -ra2884d25df318f9b2fd7251a4793d90f62dbe70e
--- firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 5109bb981cab2025fcb9de33e303d046085efa18)
+++ firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision a2884d25df318f9b2fd7251a4793d90f62dbe70e)
@@ -1370,6 +1370,7 @@
         setValveState( VRO, VALVE_STATE_R1_C_TO_NO );
         // Turn on the drain pump to drain the reservoirs in open loop mode
         setDrainPumpTargetRPM( DRAIN_PUMP_RPM_IN_MIX_DRAIN );
+        turnOnUVReactor( INLET_UV_REACTOR );
     }
     else if ( TRUE == isDrainPumpInMixDrainOn )
     {