I am trying to replace the thermostat but I am struggled with the wiring I need to know which is NC, NO and COM. Fitting a smart thermostat. Here are is a Picture of my old one. Image by Tracym74 posted 30 Mar 2018 at 8:05 PM wire is going into 1 and 3
Can some one please tell me which wire is which I have a siemen landis & Staefa raa02 on I am wanting to put new thermostat on. Which is NC, NO and com. Only have two wire in 1 and 3.