Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r49497f5219d7b7786e83ecadade22615803cadc8 -r3d87e97b9345aec63ca88d741e3bcd548f90422b
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 49497f5219d7b7786e83ecadade22615803cadc8)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 3d87e97b9345aec63ca88d741e3bcd548f90422b)
@@ -55,8 +55,8 @@
 #define DATA_PUBLISH_COUNTER_START_COUNT          5                                               ///< Data publish counter start count.
 #define NUM_OF_ACID_AND_BICARB_NV_DATA_TO_CHECK   1                                               ///< Number of acid and bicarb non-volatile data to check.
 
-#define TRIMMER_HEATER_TARGET_TEMP_GAIN           0.002F                                          ///< Trimmer heater target temperature gain.
-#define TRIMMER_HEATER_TARGET_TEMP_OFFSET         0.3F                                            ///< Trimmer heater target temperature offset.
+#define TRIMMER_HEATER_TARGET_TEMP_GAIN           -0.002F                                         ///< Trimmer heater target temperature gain.
+#define TRIMMER_HEATER_TARGET_TEMP_OFFSET         1.7F                                            ///< Trimmer heater target temperature offset.
 
 // ********** private data **********
 
@@ -568,7 +568,8 @@
  *************************************************************************/
 F32  getTrimmerHeaterTargetTemperature( void )
 {
-    return heatersTempCalc.tempTargetTrimmer + ( getTargetDialysateFlowLPM() * TRIMMER_HEATER_TARGET_TEMP_GAIN ) + TRIMMER_HEATER_TARGET_TEMP_OFFSET;
+    return heatersTempCalc.tempTargetTrimmer + ( getTargetDialysateFlowLPM() * TRIMMER_HEATER_TARGET_TEMP_GAIN * ML_PER_LITER ) +
+           TRIMMER_HEATER_TARGET_TEMP_OFFSET;
 }
 
 /*********************************************************************//**