PeterJames

Probably is the detector, however, Id still be checking what voltage you have at the detector, if the battery was not replaced before it failed it could have damaged the charging circuit. Especially if the panel is as old as the detector.

What voltage have you got on the 12v aux? When was the last time it was serviced? when was the battery last changed. If the battery is pulling the voltage down this could be causing not enough voltage reaching the detector which could be your problem

Yes thats called back focusing

You can try Risco is the only place you can get one probably

QFA probably needs a spacer ring

Sounds like the PSU to me too

Hi, The battery should be replaced every four years. This is the manufacturers expected lifetime guidelines. I have known batteries to continue to hold good life long after four years, but accredited installers have to follow the manufactures guidelines. The performance of the battery is effected by many things, the quality of the electricity more spikes and fluctuations will reduce the life of the battery. The quality of the charging system (HKC is generally good) power cuts discharging and charging the battery will reduce its life. The size of the battery should reflect the current pulled from the system.

If the panel is supplied with installation instructions, they should aso tell you the required info re the wireless devices and how to wire hardwired devices to them. you will probably need eol resistors, these normally come with the panel. I dont think there are many people that frequent these forums that install Pyronix, so doubtful any of us would know off the top of our heads. The reason I asked if you knew the eng code, is many people come here asking questions, but even with the answer they cant set/program something up because they dont have access to the engineers menu. Once you have the panel and instructions come back if you need help deciphering what they mean

Do you know the engineer code for the panel?

I think SWB meant on the beam, I agree I would use that, if the cable fails it fails in alarm

QFA

Probably take 3/4 hour to walk test 47 sensors @ 1 per minute. I would go with Imran on half a day but not all engineers work at the same speed some will be all day at it.

If someone else is able to change the programming then they cant prove they didnt. If its locked then they can prove they didnt.

Nothing is produced forever, sooner or later something better comes along and its not cost effective to keep making parts for the older kit. Decent manufactures do make stuff backward compatible though. Im not so sure they would be fine for the average private household, they advertise themselves with the name on the bell so anyone clever enough could just buy one bit of circumventing kit and go around looking for houses with Yale alarms knowing that the owner has a false sense of security. But they are cheaper than a dog, which can also be circumvented with drugged meat

If you never lock it then lose it to another company its that much harder for them to prove it was never programmed correctly in the first place. Which was my point.