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Hi thankyou much appreciated

My thermostat honeywell cm 907 has finally broken after 8 years , so i am changing it to a honeywell T4 , my question the wiring on cm907 brown ( live goes to A and on the T4 the red in the picture goes to B so on the new T4 i put brown to B and black to A is this correct my boiler is a baxi...

Thanks again

Hi i swopped the commons over and it works fine now. The 2nd switch is slightly different it has L1 common L2 and L3..so is it L2 would be L1 on the new switch and L3 now L2 .thanks again

Ok i didnt realise they were triangles ..so if i swop the commons over it should be right.? And then for the second switch ( which i havnt done yet ..just copy the first one ..? Thankyou very much it is much appreciated ..i will let you know the result ..

The original wiring is as shown ..used a new switch it works ok off one switch turning both lights off .But on the other switch it will not turn the lights off they just stay on and sometimes one switch turns both lights on ..both commons are correct i am not sure if the other wires into L1 and...