Index: firmware/App/Services/PIControllers.c
===================================================================
diff -u -r359cf587f2f935ef9f40a16d17c4105efa653c1d -racebbc372d11f4f46a64eefc36ae784cbd08880d
--- firmware/App/Services/PIControllers.c	(.../PIControllers.c)	(revision 359cf587f2f935ef9f40a16d17c4105efa653c1d)
+++ firmware/App/Services/PIControllers.c	(.../PIControllers.c)	(revision acebbc372d11f4f46a64eefc36ae784cbd08880d)
@@ -59,7 +59,7 @@
     { 0.0, 0.0, 1.0,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 },  // PI_CONTROLLER_ID_RO_PUMP
     { 0.0, 0.0, 0.99, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 },  // I_CONTROLLER_ID_RO_PUMP_RAMP_UP
     { 0.0, 0.0, 3000, 300, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 },  // PI_CONTROLLER_ID_DRAIN_PUMP
-    { 0.0, 0.0, 0.89, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 },  // PI_CONTROLLER_ID_PRIMARY_HEATER
+    { 0.0, 0.0, 1.39, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 },  // PI_CONTROLLER_ID_PRIMARY_HEATER
     { 0.0, 0.0, 0.50, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 }   // PI_CONTROLLER_ID_TRIMMER_HEATER
 };