Index: firmware/App/Controllers/Heaters.c
===================================================================
diff -u -r4c92e7dd693425816a40a80f64aeb777384f639d -r5719569ba64d430be7d554d69a865e08a15a5d4c
--- firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 4c92e7dd693425816a40a80f64aeb777384f639d)
+++ firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 5719569ba64d430be7d554d69a865e08a15a5d4c)
@@ -69,7 +69,7 @@
 #define TRIMMER_HEATER_MAX_POWER_W                                 66.5F                                                           ///< Trimmer heater maximum power in Watts.
 #define TRIMMER_HEATER_INITIAL_CONTROL_INTERVAL_COUNT              ( ( 10 * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL )              ///< Trimmer heater initial control interval count.
 #define TRIMMER_HEATER_CONTROL_INTERVAL_COUNT                      ( ( 30 * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL )              ///< Trimmer heater control interval count.
-#define TRIMMER_HEATER_MIN_DIALYSATE_FLOWRATE_LPM                  0.05F                                                           ///< Trimmer heater minimum dialysate flow rate in L/min.
+#define TRIMMER_HEATER_MIN_DIALYSATE_FLOWRATE_LPM                  0.00F                                                           ///< Trimmer heater minimum dialysate flow rate in L/min.
 
 #define DELTA_TEMPERATURE_TIME_COSNTANT_C                          8.6F                                                            ///< Delta temperature calculated from time constant.
 #define PRIMARY_HEATER_DUTY_CYCLE_PER_TEMPERATURE_C                0.015F                                                          ///< Primary heaters duty cycle per temperature in C.
@@ -145,9 +145,9 @@
         heatersStatus[ heater ].state                  = HEATER_EXEC_STATE_OFF;
         heatersStatus[ heater ].startHeaterSignal      = FALSE;
         heatersStatus[ heater ].isHeaterOn             = FALSE;
-        heatersStatus[ heater ].dutyCycle.data         = 0.0F;
-        heatersStatus[ heater ].dutyCycle.ovData       = 0.0F;
-        heatersStatus[ heater ].dutyCycle.ovInitData   = 0.0F;
+        heatersStatus[ heater ].dutyCycle.data         = HEATERS_MIN_DUTY_CYCLE;
+        heatersStatus[ heater ].dutyCycle.ovData       = HEATERS_MIN_DUTY_CYCLE;
+        heatersStatus[ heater ].dutyCycle.ovInitData   = HEATERS_MIN_DUTY_CYCLE;
         heatersStatus[ heater ].dutyCycle.override     = 0;
         heatersStatus[ heater ].targetFlow             = 0.0F;
         heatersStatus[ heater ].hasTargetTempChanged   = FALSE;