Frequent alarm sound, possible door magnet failure?

Jewellbags

Jewellbags

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Our alarm is going off once every so often (probably once an evening ) . I’ve checked to see if there’s any errant bugs running around and there’s not . I’ve now disabled the internal sensor (well hope I have ) and the hab and cab battery is fine . Could it be the one of the door magnets starting to fail ? Maybe affected by the cold ? Any other suggestions ?

Ta in anticipation
 
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I would have started where a you have with the internal sensor. Sometimes a wire like a charger cable near the sensor can set that off. I would also look at the bonnet switch.
Bloody annoying are these sort of faults.
 
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Batteries dying ?

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Not factory fitted but aftermarket alarm I fitted was getting a small back feed from door pin circuit, was only every so often but enough to trigger alarm. Bit harder for you to test each circuit
 
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You could separate the wires to all mag sensors and see if it triggers, they trigger when magnet removed generally . If it stays armed then mag switches are at fault, you put one back online at a time and test till you find the dodgy one
 
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1967bowesj said:
You could separate the wires to all mag sensors and see if it triggers, they trigger when magnet removed generally . If it stays armed then mag switches are at fault, you put one back online at a time and test till you find the dodgy one
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that’s what I would normally do but the alarm sets correctly and then several hours later decides to wake my neighbours .
 
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Weekend testing, had to do that with mine. Very slow when you don’t want alarm sounding overnight!

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Jewellbags said:
by batteries you mean the hab and cab ones ? If no no they are fine , checked them . But maybe the magnets on the door locks
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Yes sometimes if a battery is weak it can set the alarm off. Hope you diagnosed soon
 
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On ours there is a way to check individual circuits. When we get the same kind of problem its been one of:
Low battery in the hab door sender
Low battery in one of the rear (bedroom) motion sensors
Flies / a moth setting off a sensor
Open roof vent and a gust of wind has moved a curtain or the hab door fly screen and triggered the cab ultrasonic detectors.
 
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Burgo said:
On ours there is a way to check individual circuits. When we get the same kind of problem its been one of:
Low battery in the hab door sender
Low battery in one of the rear (bedroom) motion sensors
Flies / a moth setting off a sensor
Open roof vent and a gust of wind has moved a curtain or the hab door fly screen and triggered the cab ultrasonic detectors.
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We don’t have batteries in the door sender or motion sensor - it draws power from the 12v circuit . We don’t have any nets or curtains and the hab door net is rolled up -

It could be a bug but it seems to like the night :-)
 
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Could be the bonnet sensor, sometimes they are fitted to touch the under bonnet flexible cover and this gets a depression point over time. We fitted a solid block of foam between the bonnet and the under bonnet cover to provide a more solid point of contact.

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Riverbankannie said:
Could be the bonnet sensor, sometimes they are fitted to touch the under bonnet flexible cover and this gets a depression point over time. We fitted a solid block of foam between the bonnet and the under bonnet cover to provide a more solid point of contact.
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Good shout , I have been under the bonnet a bit but can’t understand why it would be sporadic - but I’ll look , ta
 
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Jewellbags said:
Good shout , I have been under the bonnet a bit but can’t understand why it would be sporadic - but I’ll look , ta
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Our alarm going off was totally sporadic but I think how windy it was had something to do with it.
 
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As Riverbankannie said, definitely check the under bonnet sensor/switch. Had exactly the same issue that you appear to be having, very intermittent and virtually only at night. Pulled the wires off of the switch and left it for a week or two and no further issue. Adjusted the switch so the bonnet made better contact but it still randomly went off, ended up buying a new switch, which was about £5 if memory serves me correct (no guarantee about that!)
 
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I’ll check when it’s dryer but no alarm last night after I disarmed the internal sensor
 
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Well I disabled the sensor two nights ago and it hasn’t gone off since . I also noticed that we had left the drop bed about a 1/3rd down and wondered if it was interfering with the sensor …. We will see
 
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Just a thought, I don’t suppose you have a small oil filled type heater on in the van to keep it warm. When I used one the radiated heat set off the ultrasonic sensors in the cab so I had to turn them off.

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royandsharont said:
Just a thought, I don’t suppose you have a small oil filled type heater on in the van to keep it warm. When I used one the radiated heat set off the ultrasonic sensors in the cab so I had to turn them off.
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No not yet but good idea
 
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Lenny HB said:
Bad idea better left unheated
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Yes not good if you thought I left the heating on over winter. I don’t but was aware some do who have them at home. No ours used to go off when on the campsite

our magnetic door switches used to sometimes go faulty & needed a sharp bang but they never caused an activation only didn’t work when faulty.
 
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Skipped through the previous replies to ask if the alarm system tells you which alarm sensor has triggered?

ours flashes the indicators a number of times coresponding to the sensor that triggered the alarm.

if it does and you don't know which, just try all of them till you ind the right one.

Had a few false triggers on ours from the bonnet sensor due to wind buffets moving the bonnet.
 
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RandallC said:
Skipped through the previous replies to ask if the alarm system tells you which alarm sensor has triggered?

ours flashes the indicators a number of times coresponding to the sensor that triggered the alarm.

if it does and you don't know which, just try all of them till you ind the right one.

Had a few false triggers on ours from the bonnet sensor due to wind buffets moving the bonnet.
Click to expand...
Hadn’t thought of that - I need to find out the sequences I guess - another trip through all the manuals :-)
 
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