Index: firmware/App/Modes/ModeHeatDisinfectActiveCool.c
===================================================================
diff -u -r75868c86d86060f8ec8fde969a479e186e51d9a0 -r61619248709d1360bb371142c59ddeb7ac6ba0d3
--- firmware/App/Modes/ModeHeatDisinfectActiveCool.c	(.../ModeHeatDisinfectActiveCool.c)	(revision 75868c86d86060f8ec8fde969a479e186e51d9a0)
+++ firmware/App/Modes/ModeHeatDisinfectActiveCool.c	(.../ModeHeatDisinfectActiveCool.c)	(revision 61619248709d1360bb371142c59ddeb7ac6ba0d3)
@@ -61,7 +61,7 @@
 #define ROF_ACTIVE_COOL_BELOW_TEMP_TIMEOUT_MS           ( 30 * MS_PER_SECOND )                                      ///< RO active cool temperature below target for cooling timeout in milliseconds.
 #define ROF_ACTIVE_COOL_INITIAL_TARGET_DRAIN_RPM        600                                                         ///< RO active cool initial target drain RPM.
 #define ROF_ACTIVE_COOL_TARGET_DARIN_RPM                300                                                         ///< RO active cool target drain RPM.
-#define ROF_ACTIVE_COOL_MIX_DRAIN_VALVE_ON_TIMEOUT_MS   ( 4 * MS_PER_SECOND )                                       ///< RO active cool mix drain VPd turn on timeout in milliseconds.
+#define ROF_ACTIVE_COOL_MIX_DRAIN_VALVE_ON_TIMEOUT_MS   ( 5 * MS_PER_SECOND )                                       ///< RO active cool mix drain VPd turn on timeout in milliseconds.
 #define ROF_ACTIVE_COOL_RSRVR_MIX_DRAIN_TIMEOUT_MS      ( 4 * SEC_PER_MIN * MS_PER_SECOND )                         ///< RO active cool reservoir mix drain timeout in milliseconds.
 #define ROF_ACTIVE_COOL_MIX_DRAIN_STEADY_TIMEOUT_MS     ( 15 * MS_PER_SECOND )                                      ///< RO active cool mix drain steady timeout in milliseconds.