Index: firmware/App/Controllers/Heaters.h
===================================================================
diff -u -r0a74bcce6674271e35d5154003dd6c25011f80f9 -r0bcac6885c8461b05da276fd245b580b7339ddfd
--- firmware/App/Controllers/Heaters.h	(.../Heaters.h)	(revision 0a74bcce6674271e35d5154003dd6c25011f80f9)
+++ firmware/App/Controllers/Heaters.h	(.../Heaters.h)	(revision 0bcac6885c8461b05da276fd245b580b7339ddfd)
@@ -1,17 +1,17 @@
 /**************************************************************************
 *
-* Copyright (c) 2024-2024 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2024-2026 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * @file    Heaters.h
 *
 * @author  (last)      Vinayakam Mani
-* @date    (last)      07-Oct-2024
+* @date    (last)      06-May-2026
 *
 * @author  (original)  Vinayakam Mani
-* @date    (original)  07-Oct-2024
+* @date    (original)  11-Oct-2024
 *
 ***************************************************************************/
 
@@ -52,7 +52,7 @@
     F32 d45_HeaterTargetTemp;                     ///< Trimmer heater target temperature
     U32 d5_HeaterState;                           ///< Primary heater state
     U32 d45_HeaterState;                          ///< Trimmer heater state
-    F32 d5_dutyCycleCnt;                          ///< Primary heater duty cycle in counts
+    F32 d5_feedforward;                           ///< Primary heater duty cycle in counts
     F32 d5_PWMPeriod;                             ///< Primary heater PWM period
     F32 d5_adjsutedTargetTemp;                    ///< Primary heater adjsuted target temperature
     F32 d5_targetTempFromTD;                      ///< User set target temperature
@@ -75,10 +75,10 @@
 BOOL setHeaterTargetTemperature( DD_HEATERS_T heater, F32 targetTemperature );
 void startHeater( DD_HEATERS_T heater );
 F32  getHeaterTargetTemperature( DD_HEATERS_T heater );
-void signalHeaterControlOnQDUpdate( DD_HEATERS_T heater );
-void signaltoResetPrimaryHeaterAdjustedTargetTemp( void );
+void signalHeaterControlOnQDUpdate( F32 prevDialFlowrate );
 void setD28TempFeedbackControl( BOOL enable );
 BOOL isHeaterOn( DD_HEATERS_T heater );
+void calculateTargetDialysateTemp( void );
 void stopHeater( DD_HEATERS_T heater );
 void execHeatersControl( void );
 void execHeatersMonitor( void );