Setting a recipe on an assembler with circuits

[meganothing]

I don't get what is wrong here:

settingrecipe.jpg (249.35 KiB) Viewed 220 times

The assembler with red circuit connection is set up so it gets its recipe from the circuit network. But it doesn't. No recipe is set even though it receives an Efficiency module as a signal (and the other combinator does not emit a signal). Does it only work on a rising flank of a signal i.e. when a signal turns on?

[boskid]

Can you show the assembler gui? Usually it wont set recipe until all trash items from previous recipe are taken out.

[mmmPI]

is the tickbox on the assemblies "set recipe" is ticked ?
because it can also be in "read ingredient" mode or something else which could explain the behavior

[meganothing]

Can you show the assembler gui? Usually it wont set recipe until all trash items from previous recipe are taken out.

That is the explanation, thank you. Surprising detail though as both possible recipes need the same ingredients. So there is no practical reason to prevent the recipe to work

I nearly would have suggested that this should be changed, but actually it provides another puzzle. So I am actually fine with it.
But it might be useful information that should be mentioned in the tooltip of the "set recipe" option. I would expect people to get the idea to use this feature with recipes that need the same ingredients as this seems to make it easier to automate.