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  1. C

    Help replacing a Stone Age stat

    It works! Thank you for your help guys
  2. C

    Help replacing a Stone Age stat

    So, the way I connect the wires to the new stat is: red to A, blue to B and if boiler still doesn't fire up try yellow to C?
  3. C

    Help replacing a Stone Age stat

    Hope these photos are better.
  4. C

    Help replacing a Stone Age stat

    I think I have a multimeter somewhere in the shed.
  5. C

    Help replacing a Stone Age stat

    I see. Thanks Chris!
  6. C

    Help replacing a Stone Age stat

    I forgot to mention that I don't have a combi boiler. I have a really old boiler. Is it possible that it uses the mains voltage switching? This is the tank in the airing cupboard.
  7. C

    Help replacing a Stone Age stat

    The pins are not bent. Anyway, I'll give it a try again tomorrow. Thank you for your help @Johnmdc
  8. C

    Help replacing a Stone Age stat

    Do I have to program the new stat in any way? I'm asking because I didn't do anything like that. Just popped it on the wall and turned it on.
  9. C

    Help replacing a Stone Age stat

    The front was on properly. I'm pretty sure because it took me 5 mins to take it apart so that I could remove the whole stat from the wall.
  10. C

    Help replacing a Stone Age stat

    The weird thing is that if I had connected the wrong wire, the new stat would have been fried, or the breaker would have popped. Right? I tested the stat, worked perfectly, (apart from not firing up the boiler) no smoke or plastic smell and the breaker didn't pop. Unless the yellow wire goes to...
  11. C

    Help replacing a Stone Age stat

    I am calm :) I connected the red wire to A and the yellow wire to B. I said neutral because the diagram on the back of the new stat has an N for B, and I assumed N is for Neutral.
  12. C

    Help replacing a Stone Age stat

    Right! I bought a Honeywell DT90A. I connected the red wire to A and the yellow to B. That is exactly what the video says; and a couple members here confirmed. I didn't connect the blue or the earth wires. There's a photo of my current thermostat attached to the OP.
  13. C

    Help replacing a Stone Age stat

    Well, it doesn't work. I connected the wires according to the diagram (red to live, yellow to neutral) but the boiler didn't fire up, even though the thermostat "clicked". I installed the old thermostat and the boiler fired up immediately. Any ideas?
  14. C

    Help replacing a Stone Age stat

    Thank you for replying! Especially @eric :D
  15. C

    Help replacing a Stone Age stat

    Hi guys, I'd like to replace my prehistoric Landis & Gyr thermostat with a more accurate digital one, and I'd like some advise please. This is my current thermostat 1. Is it a straightforward process (Like getting a 2 wired Honeywell and connect the red and the yellow wire only) as shown...
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