Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -ref6283257df7c1f993d58fb934da57ea3e0a7067 -ra6fc93f9d2c7231db0e93216036c6f7fff38740a
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision ef6283257df7c1f993d58fb934da57ea3e0a7067)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision a6fc93f9d2c7231db0e93216036c6f7fff38740a)
@@ -1165,7 +1165,7 @@
     U32 trimmerState  = dgHeatersData.trimmerHeaterState;
     DG_OP_MODE_T dgOp = getDGOpMode();
 
-    if ( ( dgOp != DG_MODE_HEAT ) && ( dgOp != DG_MODE_CHEM ) )
+    if ( ( DG_MODE_GENE == dgOp ) || ( DG_MODE_FILL == dgOp ) || ( DG_MODE_DRAI == dgOp ) )
     {
         // In heat disinfect and chemical disinfect, the trimmer heater is controlled by the DG itself so no commands from HD should be sent
         // regarding the trimmer heater.