SW HKC 812 Strobe light flashing - is that normal?

KoolKid,

Many thanks for your suggestion. I will attempt this tomorrow (can't do it today ) and will report back the results.

Mind you I don't remember seeing any strobe label on the PCB of the alarm control panel. But I will certainly attempt your suggestion and get back to you tomorrow.


Many thanks again for your help.

Dynosaur

Hello KoolKid,

I tried your suggestion:
1-Disconnecting the external bell negative : does not affect it. The box outside is still flashing
So I connected back the external negative.
2- then I disconnected the internal negative: does not affect it. The box outside is still flashing,
So I connected back the internal negative.
3- Disconnected both external negative and internal negative at the same time: does not affect it. The box outside is still flashing,
Connected back the internal negative.
4- Then I thought in for a penny ……. So I disconnected the external bell positive.:
The outside alarm sounded but white the flashing light stopped and also the alternating little green lights stopped. I guess that was the power to the outside bell module.
But the bell continued to sound.
5- Connected back the positive of the external bell and the external alarm stopped, but also the white flashing stopped and the little green lights came back but this time they blink together every 3 seconds (they don’t alternate).

So although I don’t understand exactly what happened, the white flashing light is off and that was the objective of the exercise.:)

The alarm system seems to be working (sort of) I’ll probably come back asking another one or two questions (if I may) after Christmas to fine tune this alarm system.

In the mean time I would like to thank you very much for taking the time to put me on the right track and I take this opportunity to wish you and all the members of this forum a very Happy and Peaceful Christmas.

Hello KoolKid,

I am not sure if I can continue this thread or not according to the rules? I am a newbie who has never used any forums before - except here last December when I was seeking help.( see earlier original post above)

By the way, after reading more in the forum and understanding more your advice I eventually found that the white wire going from the positive strobe (in the SAB) to the positive internal bell had a flaky connection. So connected it better and the white strobe problem was fixed, and system back to normal. Many thanks for your help on that!

(In the process I blew a couple of fuses which I replaced! - trembling hands )

But now there is another little problem:

We noticed (in the quiet of the night) a slight regular vibration coming out of the control panel box. By investigating, I’d say it is coming from the internal sounder/bell which is inside the control panel and connected to it. It emits a low vibrating sound burst/chirp about every 15 minutes for a very short time.

Can I change/replace that internal sounder? Or do I have to buy a complete control panel box?

By the way I seem to have a 6/10 SecureWatch system not a SW 8/12 as I thought initially (in above original post).

Many thanks in advance for any help.

Dynosaur

Thank you for your prompt reply Kub.

Does that inside siren look like a large match box with 2 holes in it by any chance?

Yes exactly.

SB1

Sorry, please excuse my lack of knowledge, what is SB1?

you could try just disconnecting it for a while just to make sure it is causing it

Yeah, good idea, I will try that tomorrow.


Would you think Wesco would have such a siren replacement?

I live in Newbridge any suggestion to where I could source it?

Anyway many thanks for your advice.

Hello KoolKid,

Thank you for replying.

Sound bomb! An appropriate name Thank you for explaining that.

Now for the real business!
I went down to Wesco and bought a new SB1 exactly the same as the one I had. I Connected it but alas got exactly the same noise as from the old SB1, may be a little louder:o
Luckily it was not expensive!

So back to the drawing board…

First I thought there must be something wrong with the control panel board but then I wondered if it wasn’t the SAB?
As you explained it to me before, the SAB connects to the SB1 at the Internal Bell (+ & -) terminals on the control panel board. (And the alarm system seems to work OK, well apart from this SB1 noise).

So I disconnected the SAB two wires and left the SB1 connected to the Internal Bell terminals. The SB1 was as quiet as a mouse!

If I connect just the green wire (the SAB negative to the Internal Bell negative with the SB1 connected), the SB1 makes a low level continuous noise, a sort of a hum.

If I then connect also the white wire (the SAB positive to the Internal Bell positive with the SB1 connected) the vibration pulse noise/chirp starts to occur at regular intervals.

I guess then perhaps some noisy signal is coming down from the SAB connecting lines.

But I know nothing about the SAB circuit. I think I read on one of the threads on this forum that there is a battery in the SAB.

Our SAB has not been touched since it was installed in 12/1999!
Is the SAB battery a rechargeable one? Even so may be its time to see if it requires changing?

If that is the case can you tell me, please, what type of battery to ask for in Wesco?

I will then have to arrange for someone knowledgeable to come and change this SAB battery for me.
I have never done that before and I am past retiring age now:)

If the above analysis is not correct, and if the SAAB is not the cause, then the other possibility is the control panel board.:(
But that is for another day.

Any input is gratefully appreciated

Many thanks
Dyno

Hello Kub,

Thank you for replying.

I am not sure what engineer access is?
But I can access the main menu and all the other sub-menus (well the ones I tried) by using our own code or by using the default engineer code or by using the default all ones user code.

Any help is much appreciated.

yes, I can get Service menu on the display.

Ok , Kub, many thanks for these suggestions.

I will try that now and report back.

much appreciated.

Sorry, Kub, after I reach Int. Bell NEG and press yes
the display stays 01 Int. Bell NEG
Do then I press quit until I go out?

Hello Kub,

Just reporting back.

Your instructions worked perfectly.

According to your instruction, the SB1 test was successful so the SB1 works fine now.
No hum or chirp or noise of any kind from the SB1 now. We'll have a good night sleep tonight.:)
And the alarm system is still working as it should.

Many thanks for your help and also thanks to Koolkid and Fred for pitching in.

I have learnt a lot just by reading through the various advice given in the threads of this forum.
Still, miles to go and lots more to learn……..

I definitely enjoyed this experience. Having never used forums before, I am now a believer in them.
Hopefully I can help someone sometime, (not in the alarm business though, I still know nothing about it!:):)).

A big thank you folks.:D