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Zone Trouble
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 Posted: Thursday Jun 1st, 2006 01:26 am
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slychiu
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The "Zone Trouble" Message appears when Comfort detects an Open circuit or Short circuit at one of the zone inputs.
To detect Open or short circuit, the Zone shunts JZ1 to JZ8 for ecah zone must be set to the position AWAY from the terminal blocks. 2 End-of-line resistors should be connected, 2700 ohms in series and 4700 ohms in parallel with the sensor contacts. Refer to Installation Manual Figure 2.11

If the 2 EOL resistors are NOT connected while the zone shunt is at the position AWAY from the terminal blocks, then a "Zone Trouble" alarm will be produced.

If no EOL resistors are used, connect the relevant zone shunt in the position CLOSER to the terminal blocks. In this position, the system does not distinguish between Open circuit and Open contact or Closed circuit and Closed contact

Another cause of "Zone Trouble" could be that other voltages are connected to the zone input, for example if the zone wiring is shorted to other wires

If the zone shunt is connected in the position  closer to the Terminal blocks and the zone has nothing connected to it, and there is a "Zone Trouble" alarm, then there could be a fault on that zone


The Installation Manual which explains how to connect zones can be downloaded from http://www.cytech.biz/installation_manual.html The Installation manual is essential to a correct connection.

The Hookup Diagram can be downloaded from http://www.cytech.biz/hookup_diagram.html


Last edited on Saturday Jul 23rd, 2016 12:52 pm by slychiu



 Posted: Wednesday Aug 30th, 2023 06:54 am
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slychiu
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How to check Zone Trouble for system with NO EOL Resistors.

CM9001 with NO EOL Resistors setting is selected  in Each Zone. No EOL Resistors means the 2K7 and 4K7 EOL resistors are NOT connected on the zone.
If the zone still shows Zone TYrouble, then it may be a problem for the magnetic conbtact or PIR or the wires to the zone terminal. There should be NO volatge on the zone, ie the zone should detect Opoen or Closed contact. Zoine TYrouble is detected when there is a stray VOLTAGE on the zone.

Disconnect the wires from the terminal (or remove the terminal block). Do a Security Chekc Keypad F,3,2. This announces all open zones or Trouble zones. When the terminal block of the zone has been removed, Shirt and Open the zones on the terminal., The keypad shouyld announce the zone when Open. There should nopt be zone trouble announced. If the zone tyroub le is announvced then there is a problem with the CM9001 hardware. If there is NO Zone Trouble, then there is a problem with the wires to the zone/sensor or the sensor itself



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