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Topic Title: AICO Ei141 Alarms sounds for short duration and then stop
Topic Summary: Mixture of radio base and hard-wired
Created On: 26 April 2014 06:38 PM
Status: Read Only
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 26 April 2014 06:38 PM
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Joined: 24 January 2008

Hi I have a customer with 4x AICO Ei 141, the 3 in the stair well are hard wired and the one in the hall is linked with a radio base to the alarm at the bottom of the stairs.

The customer has had me out twice in the last 4 months with a false activations, apparently it goes into alarm briefly for a few seconds (6-7 cycles), and this might repeat for every 5 minutes. It is not the low battery alarm i.e. a regular single beep

Needless to say I have been unable to witness this behaviour myself as it only occurs in the early hours.

I have done all the obvious like replace the batteries and vacuumed all the alarm units, tested the circuit and checked the voltage at each base unit - ALL OK.

The customer has now switched off the MCB and the alarms are running on battery, when he does this the false activation does not occur.

Any suggestions...
 26 April 2014 09:06 PM
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I would give AICO a ring, they have been very helpful when i have contacted them.


"If you try and take a cat apart to see how it works, the first thing you have on your hands is a non-working cat."
 26 April 2014 09:06 PM
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Hello Mike,

I've had this issue and replaced the unit that was causing the alarm. It was an old one and I suspected dust and spiders.

But, first have a look at this, especially section 13. It mentions your particular model and how to tell which unit has caused the trigger. I'd be inclined to call Aico about this one.

Let us know please.

 26 April 2014 11:30 PM
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I've had some success with air in a can type sprays to blast out the detectors with similar issues. Sometimes you get dust, spiders webs etc which can cause funny false alarms. Might be worth a try if you have one or can pick one up easily enough?

Richard (Dick)

"Insert words of wisdom and/or witty pun here"
 27 April 2014 05:46 PM
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Is the property out in the 'sticks'.

Had a similar problem, called Aico and they sent me some capacitors to fit! Cured the problem!
 28 April 2014 05:52 PM
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I had this problem once and it was a loose neutral on one of the alarms in the circuit. Tightened up the terminal screw and no more problems.


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