Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r5109bb981cab2025fcb9de33e303d046085efa18 -r8f62bdb42454ff729b62c7309abfac14a51c3ff6
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 5109bb981cab2025fcb9de33e303d046085efa18)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 8f62bdb42454ff729b62c7309abfac14a51c3ff6)
@@ -661,6 +661,9 @@
         resetFillStatusParameters();
         isThisTheFirstCycle = FALSE;
     }
+
+    // Constantly update the trimmer heater target temperature
+    setHeaterTargetTemperature( DG_TRIMMER_HEATER, getTrimmerHeaterTargetTemperature() );
 }
 
 /*********************************************************************//**
@@ -711,7 +714,7 @@
             heatersTempCalc.timeUFDecayMS        = (F32)heatersTempCalc.timeReservoirCycleMS - heatersTempCalc.timeReservoirFillMS;
             UFTimeConstant                       = heatersTempCalc.timeUFDecayMS * UFTauCPerMS;
             heatersTempCalc.tempUFFill           = tempLastFill + UFTimeConstant;
-
+            // TODO If tempUFFill < 25 make it 25 C or apply exponential Tau
             tempTargetNumerator                  = heatersTempCalc.tempReservoir0 - ( ( heatingConstsCalRecord.ultrafilterVolmL / targetFillVolML ) * heatersTempCalc.tempUFFill );
             tempTargetDenominator                = ( ( targetFillVolML - heatingConstsCalRecord.ultrafilterVolmL ) / targetFillVolML );
             tempTargetC                          = tempTargetNumerator / tempTargetDenominator;