Closes #12624

core/src/mindustry/world/blocks/payloads/BlockProducer.java

@@ -109,7 +109,7 @@ public abstract class BlockProducer extends PayloadBlock{
 
         @Override
         public boolean shouldConsume(){
-            return super.shouldConsume() && recipe() != null;
+            return super.shouldConsume() && recipe() != null && payload == null;
         }
 
         @Override

core/src/mindustry/world/blocks/production/HeatCrafter.java

@@ -52,6 +52,12 @@ public class HeatCrafter extends GenericCrafter{
             super.updateTile();
         }
 
+        @Override
+        public BlockStatus status(){
+            if(heatRequirement > 0 && heat <= 0f && enabled) return BlockStatus.noInput;
+            return super.status();
+        }
+
         @Override
         public boolean shouldConsume(){
             return (heatRequirement <= 0f || heat > 0) && super.shouldConsume();