Re: Blinking red LED; C&K MD's

[mleuck <m.leuck@xxxxxxxxx>]

On Dec 4, 5:15=A0pm, Jim Rojas <jro...@xxxxxxxxxxxx> wrote:
> cha...@xxxxxxxxx wrote:
> > Taking over old system containing C&K =A0DT435 and DT460S motion
> > detectors. =A0Installed NX8E and connected the MD's.
>
> > PROBLEM: =A0Red LED's on all of the MD's blink continuously every secon=
d
> > or so. =A0Why? Pulsing continues long after power-up. Have powered
> > down/up several times.
>
> > Yellow and green LED's cycle on and off as their respective
> > technologies are tripped, indicating to me that neither pir nor
> > microwave have gone to sleep. Red LED's light after yellow and green
> > LED's light, causing normal relay transfer. =A0All appears to be normal
> > except that after the MD's reset, the red LED continues to flash every
> > second or so, and never stop. System keypad green ready light
> > extinguishes when there is movement, and lights when the MD's reset.
> > indicating MD relays are functioning properly.
>
> > I have read the 435 manual (do not have a 460S manual), but I did not
> > see an explanation for the pulsing red LED. =A0Red LED's continue
> > pulsing long after power-up.
>
> > Brought two 640S to shop workbench. =A0Applied 12 volt battery, without
> > charger. No pulsing red LED, even during power-up. =A0All LED's operate
> > properly. Units perform perfectly.
>
> > Anyone have an answer?
>
> All the C&K dualtec motions work the same. The red flashing LED means
> microwave failure.
>
> Jim Rojas
> Technical Manuals Online!http://www.tech-man.com
> 8002 Cornwall Lane
> Tampa, FL 33615-4604
> 813-884-6335

Hey maybe they supplied the internals for the old Detection Systems
DS835 :)