Bypass CO Sensor on DSC Power 632

[briane13168]

I have a DSC Power 632 Series (PC1555MX) alarm system. I have a hard-wired CO sensor that needs to be replaced. However, I would rather bypass that zone and use a less expensive plug in CO Sensor. When I try to bypass that zone it won't allow it (eg. press *105 - "05" is the zone to bypass). My guess is I need the supervisor code or something to disable/bypass this zone. I called ADT and they won't disable the zone because it's a life saving system (even though I don't monitor this system and have plug in CO sensors)

Two questions:
1) Does anyone know how I can bypass this even if a block is in place?
2) Can I just remove the zone altogether by removing the wires for the CO sensor on the main panel?

Any help would be great!

thanks

[george6488]

If you have a system from ADT....are you still under any contract? The terms of the contract will determine if YOU can make any changes.

A CO sensor is indeed a life-saving device and should be replaced if YOU and family will be depending on this to warn of carbon monoxide.

From a business stand point.....ADT wants to service your panel and, hopefully, get you to sign up for their outrageous monitoring fees.

If and ONLY IF........you will NOT be depending on this lifesaving device for protection you can by-pass it. Not knowing how it was hooked up...I must give you 2 solutions.

1.) If it is wired as a NC (normally closed) device and is attached to a normal zone.......take off the zone wire and the common wire and put a jumper wire in it's place.

2.) If it is attached to a fire zone as a NO (normally open) device.....just disconnect the wires to make it inoperable.

Optionally, take the entire system out of service until repairs are made by disconnecting the battery and unplugging the transformer.

[briane13168]

Thanks for the info. We are not under contract with ADT any longer and the system is not monitored. I am guessing it's option 1 in your post since I already tried disconnecting the wires from the control box and it kept showing a zone fault.

Can you explain how to put a "jumper wire" in place? I'll try that next.

Also, we are still going to have CO sensors in place but we're opting for multiple sensors on first and second floors that plug in, instead of just the 1 wired sensor on our second floor.

Plus the installed sensor is a four wire sensor that is quite expensive to replace and my local Lowes and Home Depot don't offer many options with a 4-wire detector.

[george6488]

Look for the terminals that the two sensor wires attach to....not the 12 power wires.

Remove the two sensor wires and attach a short piece of wire between the terminals....ie: the panel thinks it has a complete circuit. Another way of explaining....short the two terminals.

This will work for a NC (normally closed) circuit.

NO (normally open) circuit.....detach the wires and you are done.

[briane13168]

Thanks!!! That did the trick. I was a bit confused since I have a 4-wire installation but I added a jumper wire between the "com" and "Z5" ports (green and white wires attached there respectively). Also removed the black and red power wires (no jumper there).

Powered it back up and the only trouble light was for resetting the clock!

Thanks again!! Great Advice!!