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 combi plantinum ..thanks
Changing thermostat from cm907 to T4 both honeywell
- Thread starter DANESDYKE
- Start date
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In this case, it doesn't matter which way the *Blue and Brown wires go into A, or B.
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