Morning everyone.

 

First post so be gentle with me!

 

Fitted my own Accents G4 mini alarm with autodialler when we moved into our house around 6 yrs ago. All working perfect until a week ago.

 

Went to bed one night last week and tried set my alarm on Prog 2 for downstairs only but came up with a setting fault on the first PIR in the hall. I then realised that all 7 PIRs on the system were dead, no LEDs light on the front of any of the PIRs when movement is detected.

 

Went into Walk Test in engineer mode and all 7 PIRs are registering as activated.

 

Opened up the panel and fuse F2 had blown. Ordered some replacements and reinstalled new fuse. All worked fine for about 4 hours, when I noticed all PIRs were dead again! Replaced same fuse again and this time lasted for a few days, but went to bed last night and the fuse had blown again!

 

The only other anomaly we had prior to this was last Saturday when the alarm triggered whilst in day mode! The top half of my LCD display was just showing solid blocks of squares but it did allow me to type in my code to silence the alarm. I replaced the back up battery as it was due a change and it was working fine up until I tried to set it last week.

 

As ever, any advice would be appreciated.

 

Cheers.

damaged cable,

Thanks for the reply MrHappy.

 

Damaged cable? Any idea whereabouts? Nothing has changed with the system in 6 yrs. 

 

Cheers.

Well, need to work out why the fuse is going.

A multimeter and testing the wiring and current against your as fitted readings would be a good start.

If you can isolate it down to one run you can then prove the cable or the equipment.

Thanks sixwheeledbeast

 

Which would be the best way of checking the cabling? I can't do a continuity test as the ends of the cabling are quite a distance apart. I was going to disconnect a PIR at a time to try and find the fault that way. The only problem with doing it this way is that it could take a long time to diagnose where the fault is! When the fuse went sometime last night, it was working perfect for a few days.

 

As ever, thank you.

Roland Rodent

26 minutes ago, lymebayalarms said:

Roland Rodent

Nah, I'd have at least heard the little blighter scurrying around the loft surely? Lol. The only rodents we've had in the past is little mice in the kitchen only.

 

Let's say it possibly was and somewhere the cable has been chewed, surely the fuse would blow straight after I've replaced it?

You are out of your depth with a fault that could potentially burn your house down while you are asleep. Get a pro in. Sorry if the truth isn't palatable.

some things are diy friendly, tracing an overcurrent without solid electrical knowledge is not imo.

Alarm cables have multiple conductors so maybe testing in pairs would be better than probe extension leads...

 

Fuse taking it's time to blow is likely to be high resistance short of some sort or intermittent fault which would be harder to diagnose.

guys for the advice. If I can't find anything obvious then the Pro's it is!