Green Building Forum - Sounder Battery Mon, 25 May 2026 05:53:07 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309593#Comment_309593 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309593#Comment_309593 Tue, 04 Nov 2025 15:07:36 +0000 Rex
Voltage at battery terminals when not connected 13.5v

Battery voltage 12.5v

So would appear that the transformer and its charging output is all OK.

What next?]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309743#Comment_309743 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309743#Comment_309743 Sat, 29 Nov 2025 10:16:54 +0000 Rex
All I know for certain is, a new external sounder has not solved the issue so presumably, it is nothing to do with the sounder.
But the panel works just fine on batteries alone, the warning (very loud beep beep beep from the external sounder,not the normal alarm siren) only occurs when I insert the mains fuse.

Presumably something on the panel board is causing a fault. But I know nothing about how to find and/or resolve electronic issues.

The alternatives, I could spend a small fortune to engage an engineer who will probably tell me that I need a new control panel. In which case, I may as well buy one anyway and fit it myself.

Any further suggestions most welcome.

Hopefully, finally managed to attach a sound file!!!]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309782#Comment_309782 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309782#Comment_309782 Wed, 03 Dec 2025 14:42:03 +0000 Rex
The other was to check the DC voltage with power off and on. Apparently, meter on AC, pos probe to12v DC, neg to mains earth and check with mains off and on.

In the photo, the mains earth is arrowed; the AC reading with mains off at 1,2,3 4 are .26, .26 .26 and .26

With main on, the readings are .27, .27, .21 and .36

Not being an electrics expert, I have no idea what these reading imply. Grateful for some enlightenment.

Thanks]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309783#Comment_309783 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309783#Comment_309783 Wed, 03 Dec 2025 18:09:17 +0000 djh Posted By: RexHopefully, finally managed to attach a sound file!!!Well it was a sound file, after I unzipped it, but it just sounds like noise; no beeps or whatever?

The other was to check the DC voltage with power off and on.
I'd expect to check a DC voltage with the meter set to DC and the probes to the two DC terminals (1 & 2 ?). Connecting one probe to earth suggests looking for an earth leak or such like?]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309784#Comment_309784 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309784#Comment_309784 Wed, 03 Dec 2025 21:27:00 +0000 WillInAberdeen In which case, voltage measurements from mains earth doesn't mean anything.

Measure in DC mode between 1 to 2 (supply from battery) and in AC mode from 3 to 4 (supply from low voltage winding of mains transformer) and see if anything seems odd.


Could any wiring between the panel and the sounder have got loose or damaged?]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309785#Comment_309785 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309785#Comment_309785 Wed, 03 Dec 2025 22:46:31 +0000 Rex
Question of interruption but that pulsing 'noise' is the sound that now comes from the external sounder when the mains is connected. On the battery, everything is fine, but it is that noise that just started and now, I cannot find how to get rid of it.

Having replaced the external sounder, and it still makes that noise, but only comes when the mains fuse is inserted, can only conclude that the main panel has a fault. Which does not make sense since as I say, everything is fine on the battery.

"Could any wiring between the panel and the sounder have got loose or damaged? " Anything is possible but there is only one wire between the panel and external sounder. Although it is a timber frame house, most unlikely that the wire has become damaged by rodents or whatever. Certainly, that wire does span a cavity to the sounder, but again, everything is fine on the battery.]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309875#Comment_309875 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309875#Comment_309875 Wed, 10 Dec 2025 17:36:16 +0000 Rex
So will fit a Kinetic Sound Bomb to at least, make the interior less comfortable. It only has two wires. The Accenta Gen4 Mini engineer manual shows how to wire and external sounder/speaker, but seems to me that it will work when the alarm is counting down.

I therefore assume that the sound bomb should be connected to the external sounder board terminals, D and B so that it only operates when the alarm is activated?]]> Sounder Battery https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309889#Comment_309889 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18363&Focus=309889#Comment_309889 Fri, 12 Dec 2025 16:15:49 +0000 Rex
Now I have to reprogram the RKP but it is working on the default code.

As an aside, I did fit a Sound Bomb to terminas B and D. It does what it should but...........

With the alarm not working (i.e. we are in the house) the sound bomb has a very faint background electronic buzz. One has to listen closely to hear it but since the panel is in a cubby hole in the guest bedroom, it may be audible in the silence of the night.

Is this normal?]]>