Cooper TP Workshop Manual_Scant:Layout 1 7/8 ... - Cooper Security

95EN, 85EN, 65EN8. Use option 95-6 to check for network (data transmission) errors.9. Check the AC voltage on the secondary side of the transformer in thecontrol unit (i.e. between the wires going from the transformer to thePCB). You should obtain a reading of between 17 and 21 Vac. If thevoltage is low, check that the mains voltage to the control unit is between225 and 254 Vac. Caution: Mains voltages can cause serious injury!10. If you think there may be a problem with a device such as a keypad, wireit to the control unit using a short length of new cable. If it now workscorrectly, this indicates a problem with the original cable run, theterminations or the output from the device that it was connected to. If itstill does not work correctly, there is possibly a fault with the device itself.Why are false alarms occurring?Ensure that detectors have been positioned and installed correctly, inaccordance with normal good practice.Follow the advice given for "Why is a keypad or other device not respondingcorrectly?".Check the resistance of the wiring to the zone sensor: disconnect and shortthe two zone cores at the sensor end, then disconnect the same cores at thecontrol unit and measure the resistance between them. This must notexceed 100 Ohms.Why is there strange text displayed at a keypad?Follow the advice given for "Why is a keypad or other device not respondingcorrectly?".Why is the system indicating that remote keypads or other devices have beenremoved?Follow the advice given for "Why is a keypad or other device not respondingcorrectly?".No keypads are responding. What should I do?Try the following in order:1. Check that mains is connected to the control unit and/or a chargedbattery is connected.70 of 72