C-TEC ZFP fault codes

ZFP: Displaying and clearing fault conditions

Per the manual, when a fault occurs one or more Fault indicators flash yellow, the internal buzzer sounds (if enabled) and the fault button on the touchscreen changes from blue to yellow with the number of faults shown. Pressing it shows the fault type and location; pressing the fault display shows more detail: for device-specific faults the loop number and address. The designated responsible person may silence the internal buzzer (new faults resound it), take steps to have the fault rectified, and note it in the log book. Once faults have been cleared the panel should auto-reset and return to normal; pressing Reset while faults are still present will not clear them, and they will simply re-appear.

Duplicate CAST device address

The ZFP reports DOUBLE ADDRESS when more than one CAST device uses the same loop address.

ZFP earth fault

The ZFP earth-fault monitoring circuitry has detected an abnormal system connection to earth.

ZFP: Fault LED (flashing yellow)

Per the manual's LED table, a flashing yellow Fault indicator means there is a fault condition on the system. See section 5.3 for details.

Configured CAST device missing

The ZFP reports MISSING when a configured CAST loop device is not found at its recorded address.

ZFP: Network Fault LED (steady yellow)

Per the manual, a steady yellow Network Fault indicator means a system network error has occurred. Action listed: call the service engineer.

Loop driver open circuit

The ZFP loop driver reports Open Circuit when it detects an open circuit on the addressable loop.

ZFP power supply fault

The ZFP power-supply monitoring reports a PSU fault; C-TEC explicitly identifies absent, discharged or poor-condition batteries as causes.

CAST loop short circuit

The ZFP has detected a short circuit on a CAST addressable loop; the manual identifies this as a latching fault.

ZFP: Sounder Fault LED (flashing yellow)

Per the manual, a flashing yellow Sounder Fault indicator means a fault has been detected on the panel's sounder circuits; steady yellow means the panel's sounders have been disabled. Action listed: call the service engineer.

ZFP: Supply Fault LED (steady yellow)

Per the manual, a steady yellow Supply Fault indicator means the panel has detected a fault with its power supply, batteries or mains supply. Action listed: call the service engineer.

ZFP: System Fault LED (steady yellow)

Per the manual, a steady yellow System Fault indicator means a system error, such as a microprocessor fault, has occurred, and it remains lit even if the system fault clears. It can only be cleared by pressing the control panel reset button at access level 2 or 3. Action listed: call the service engineer.