Index: firmware/App/Controllers/Heaters.c
===================================================================
diff -u -rd748813399d38ef5b71d760e327e368cc82d7a38 -r0797158d6e367debb04e043798f1aeb1fb17063b
--- firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision d748813399d38ef5b71d760e327e368cc82d7a38)
+++ firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 0797158d6e367debb04e043798f1aeb1fb17063b)
@@ -846,6 +846,9 @@
         F32 control = getHeaterControl( heater );
         F32 period  = getHeaterPWMPeriod ( heater );
 
+        //Make sure PWM control is enabled all time
+        setFPGAD5HeaterPWMEnableControl( TRUE );
+
         if ( D5_HEAT == heater )
         {
             //Convert duty cycle into LowState and multiply by period