Index: firmware/App/Controllers/Heaters.c
===================================================================
diff -u -r5c44a60a37460e1977adc9c1095e9e709a818055 -r1923195b6564be4405a39a3ebf09c3d6026860b3
--- firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 5c44a60a37460e1977adc9c1095e9e709a818055)
+++ firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 1923195b6564be4405a39a3ebf09c3d6026860b3)
@@ -323,6 +323,7 @@
 
     if ( TRUE == heaterCmdPtr->startHeater )
     {
+#ifndef DISABLE_TRIMMER_HEATER
         if ( ( MINIMUM_TARGET_TEMPERATURE <= heaterCmdPtr->targetTemp ) && ( heaterCmdPtr->targetTemp <= MAXIMUM_TARGET_TEMPERATURE ) )
         {
             cmdResponse.rejected = FALSE;
@@ -336,6 +337,7 @@
         {
             cmdResponse.rejectCode = DG_CMD_REQUEST_REJECT_REASON_INVALID_PARAMETER;
         }
+#endif
     }
     else
     {
Index: firmware/App/DGCommon.h
===================================================================
diff -u -rfc124934ae59b7cb2b015d4f8fa7ddfaf0707e8e -r1923195b6564be4405a39a3ebf09c3d6026860b3
--- firmware/App/DGCommon.h	(.../DGCommon.h)	(revision fc124934ae59b7cb2b015d4f8fa7ddfaf0707e8e)
+++ firmware/App/DGCommon.h	(.../DGCommon.h)	(revision 1923195b6564be4405a39a3ebf09c3d6026860b3)
@@ -59,6 +59,7 @@
     #define DISABLE_MIXING                  1
     #define USE_SMALL_FLOW_SENSOR_K_FACTOR  1
     #define DISABLE_FLOW_CONTROL_TREATMENT  1
+    #define DISABLE_TRIMMER_HEATER 1
 
 
     #include <stdio.h>