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Replace the old thermostat

Posted: 22 Dec 2018, 13:53
by Alemar
Hi. This is the situation of music old thermostat. I have disconnected those two wire and connected to the Netatmo. I have also tried to reverse each other, but in both case the boiler don't work. What can i do?

Alessandro

PS: yes, the relais Is detected by the thermostat