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Fire

Morley-IAS ZXSe fault records

8 fault records for this panel, each labelled with its review status and, where one is cited, the source document it comes from. Morley-IAS ZXSe series analogue addressable fire alarm panel.

Fault records

8 records

Earth Fault

Not yet verified

ZX: Earth Fault indicator and message

Yellow Earth Fault indicator on the ZX series panel: an earth connection fault has occurred on a cable. To clear it, correct the fault condition and then perform a panel reset (page 7). The alphanumeric display shows a message such as EARTH FAULT TO -VE ON EXTERNAL WIRING, with a negative or positive sign for the polarity of the fault. The manual says the panel will normally continue to work with a single earth fault, which should still be rectified as soon as possible. To locate it, measure the voltage from the battery negative input to the supply board earth input: on a healthy system this reads approximately 1 V; below 0.3 V the panel registers an earth fault to negative and above 1.5 V an earth fault to positive. Disconnect each external cable in turn (sounder wiring, detector loop wiring, auxiliary 24 V output feed): when the faulty cable is disconnected the voltage returns to 1 V (page 55).

Zone Fault

Not yet verified

ZX: Zone Fault indicator

Front-panel indicator on the ZX series panel. Function per the manual: flashing means the zone contains faulty devices; steady means the zone is either disabled or in test mode (yellow zone indicator). How to clear, per the manual: correct the fault condition and then perform a panel reset for a flashing indicator; re-enable devices or cancel test mode for a steady one.

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Records marked “sourced — not yet independently verified” carry a real citation but have not yet completed formal review. Always confirm against the manufacturer's current documentation before acting on site.