I am sure, that brown belongs to 4 (in new thermostat) and blue belongs to 3. I put the black cable in 2; the thermostat works but it never reaches the temperature I set up. I also rewired the black cable to 1 - but this does not have an effect either.
Does this thermostat even work with my existing wiring?
Hi @dengo , I have the same old and new thermostat and the same problem, did you manage to make it work? The brown is the live wire and goes to 4 otherwise the thermostat will not even turn on, but as well I can’t make the thermostat to control the valve or thermal actuator.
It’s because the original Halmburger thermostat is a switched-live (the incoming live in screw-terminal 1 is switched with the output on terminal 2), but the new zigbee controller is switched-neutral (the incoming neutral is switched between terminals 1 and 2). That makes them incompatible unfortunately unless you add a relay into the circuit.
16A (Amps) and 10A are the amp-ratings for the switches, normally these don’t need to be rated for more than 5A as they are just switching a small actuator.
