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Yes I do - there is also a wall light connected to the same. Nothing at all happens when I remove the fuse - the wall light goes off but nothing changes in the alarm, the green mains light stays off. No changes in behaviour.

Sorry - perhaps I didn't explain myself very well. Alarm was replaced in March 2021 For the first 10 months (approx) the green light was permanently ON Now, the light is permanently OFF Despite this, the alarm works as expected (I assume using the battery power only). Following the above...

I didn't isolate it - I disconnected the wires (main and interlink) from the old alarm, and connected them to the new alarm.

Thanks a lot for your message - makes total sense now, but still I wonder why the interlink wire exist and was connected to the old alarm. The interlink wire is white. I could disconnect the interlink wire from the alarm and add a closed end crimp terminal See if the green light works again (it...

That's what I thought initially... but I might be wrong. I only have one alarm in my flat, so not sure why on the old alarm there was a cable connected to the interlink connection. I have done the same with the new alarm.

Hi, Thanks for your message! I have connected the 2 mains + the third cable (interlink). This is a block of 4 flats and I only have one alarm in my flat. No idea what other flats have, also the old model (NL3602) is no longer in production so there was no way to get the same. Probably the other...

Hi all, I'm new on this forum - have some general knowledge on electrics from school but I'm not qualified nor I practice the profession. This would be just for DIY, so thanks everyone in advance for any tips :) Last year in March I replaced a very old and no longer working ionisation type...