old honeywell fire system

[goofy]

i am working on an old honeywell fire system in a 20 story building. i
keep getting an a/c power loss error but i am not losing a/c power. i
put a fluke recorder on both the 120v input and 29vdc output and
havent seen more than a .3v change in either. ive tryed new power
supplies, boards, and input power source. any ideas what might be
causing this?

 

[goofy]

How is the AC loss reported? Does this panel have a built in dialer? Or
is it just an annunciator showing AC loss?

Jim Rojas




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it has a built in dialer that goes to a central router

 

[Nick Markowitz Jr.]

If that panel is an old honey well addressable delta net
they were prevelent to having that problem most companys have pulled the
panel out and replaced it with a fire-lite ms9200 which is compatable to the
addresable modules.

 

[goofy]

If that panel is an old honey well addressable delta net
they were prevelent to having that problem most companys have pulled the
panel out and replaced it with a fire-lite ms9200 which is compatable to the






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i dont think the problem is with the panel. there are 3 other building
with the same system with no problems. also, the problems are only
with 2 power supplies that control the first 2 dgp panels. there are 6
other dgp panels with no problems and they all tie into the same
communication. its says that there is an ac power loss roughly every
20 min. and it only lasts 1 min. almost like the power supply is going
into thermal overload and resetting but it isn't. the points have been
taken out just so we dont get the alarm notification every 20 min. ive
only been working on this system for 2 months and the problem also is
that i have no schematics. but like i said, every other building is
ok. thanks for any input.

 

[goofy]

How is that possible? There were no plans and submittals made when it was
installed?







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the system was installed about 20-30 years ago. all the schematics and
plans were in the basement and there was a water main break and
everything was lost

 

[goofy]

No back ups with the city?







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not that im aware of.

 

[Frank Olson]

not that im aware of.

Check to make sure someone hasn't programmed a panel with the same
account code. Change your customer's account code and see if the AC
loss signal follows.