Maybe this half locked and sometimes it's halfway. But it shouldn't work well if that happens and what you say works well. And you tried putting it in heating mode to see how it works.
It should energize the coil in heat mode. Look over there you have to lie to the sensor to activate the platelet.
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Regards
Yes, connect it in 220 directly, and actuate yes, I also gave the valve a few gentle strokes but nothing, what I do not understand is that sometimes it works well and sometimes not, being that the valve is disconnected (it should not move)
It moves if the stem, but still hot, put in heating mode and does not work, nothing turns on