Yale HSA 3400

Hi, I have a Yale HSA 3400 alarm system that keeps going off randomly even when disarmed. I have changed all the batteries and checked the anti tamper on all but the main outside wall mounted alarm box. I struggle to reach the box due to my ladders not being big enough but can just about reach the batteries to change them, when you disarm the alarm after it has been triggered it can be anything from 1 hour to 2 days before it will trigger again. I have put duracell heavy duty batteries in all. Any help or ideas would be apreciated.

Thanks in advance

Jon

life being what it is, it will be the siren box.

Lift it off the wall and bring it into the house to test. It will be much easier.

the tamper detector is a sprung plastic lever. It has to press against a firm flat spot on the wall, and the lid pushes on it. If your wall is uneven it may not be pressing hard enough. If you put it on a table or other flat surface in the house with the lid on, it should be pressed. You will see the switch it operates, and it is possible to hold it closed with a rubber band while you are testing.

When you refit it, put it where you can reach more easily. Perhaps you could put it close to an upstairs window that you can lean out of.

If, before that, you want to verify that it is not one of your sensors, take the batteries out of one or more of them for a day and see if the alarms stop. I would suspect a door sensor first, for example if you have a door that rattles in the wind.

During testing, it is possible to set the siren to sound for only one second. That will annoy the neighbours less.

If you have a defective sensor, or siren, you might be able to get one on ebay at modest cost. The sensors from the 6000 range will work with the 3000 range siren (and vice versa) but the keypad is quite difficult to program to match with the other version of siren because the commands are different. An HSA6400 at Ironmongerydirect, is a similar budget DIY wireless alarm, but better.

If the siren keeps going off even after you have taken the batteries out of all your sensors, it might be due to radio interference, which is very rare if you live in an ordinary domestic house. Ensure the siren is well away from your wireless router, baby alarms, wireless doorbells, arc welders and radio transmitters. Occasionally they block signals from sensors, I have never actually known one set off the siren but no doubt it is possible.

You will also get comments from people who disapprove of budget wireless DIY alarms, which will not help with your problem.

Thanks for the quick reply... I will do the door contacts first as I cant get the bell box down without big ladders.

Its been a cracking alarm for the last 8 years.. could just be a faulty bell box.

Thanks again..

A window cleaner might help.

Jaming is a serious problem for all wireless connected alarms.

One company recognises this and advises user to turn off the tamper detection if there are too many false alarms due to interference.

http://mpc.assaabloy.com/yalefile/Fetchfile.aspx?id=16000 said:

HSA3400 Keypad alarm system
Installation Programming Operating

Radio jamming
This unit is equipped with the latest type of radio receiver using AM radio technology. If the system is armed, any criminal attempt to prevent (or jam) the detector transmissions will be picked up as interference and will trigger an alarm. If the alarm is frequently triggered by interference there may be high levels of unusual radio signals in your area. Some kinds of
electronic equipment can generate this kind of radio interference.

In the unlikely event of you experiencing problems with interference, it is recommended that you switch jamming detection off.

Please telephone our helpline if you require any further assistance.

Click to expand...

Switching the jamming detection OFF is the same as disabling the tamper system. With the jamming detection switched OFF a criminal can block the system, sensors will then be unable to tell the siren to sound so the alarm system is rendered useless.

I have turned the jamming off and it still goes off

The more I think about it I come to the onclusion its time for a new on (£75 from screwfix at the moment)

Does anyone know if the PIR's and door contacts of my HSA 3400 will talk to a HSA 6200?

Again thanks in advance

Big__Jon__ said:

I have turned the jamming off and it still goes off

Click to expand...

Was that by removing the jamming detection link in the siren or by disabling the system tamper using the keyfob.

The system tamper is not the same as the jamming detection in the siren. If jamming detection in the siren is enabled then the siren will sound if it is jammed / blocked even though system tamper is disabled.

I have disabled the jamming on the box but the system tamper will only disable for an hour then auto enables.

The manual states "If left in the tamper disable mode, the system will revert to normal after 1 hour"

Thanks again

Jamming is actually very rare. I am guessing that you live in an ordinary domestic house in an ordinary residential street, and you do not have a radio transmitter, and you are not known to keep quantities of gold bullion in the house. Is there any reason why anybody might think it is worth their while attacking your alarm system for day after day?

If you are thinking of buying a new one, look at the hsa6400 which is much better and can connect to your phoneline to ring keyholders in an alarm. Ironmongerydirect usually have a good price.

The sensors from the 3000 series work with the 6000 series, so do the fobs, but the extra keypad is difficult because the commands are different.