GB1073. Check the sequences:• recorded by reading the microSD card (see User guide),• transmitted via the standalone dialler (or by the control panel fittedwith a transmission module).4. If the optical field test does not work:• check there are no obstacles in the way of the detection zone,• loosen the screw and tightening washer in order modify detectororientation.5. Put the control panel back in user mode using the keypad to enter:6. Perform a real test.installer code “beep,disarmed”7. Maintenance7.1 Fault indicationsThe control panel constantly monitors detector status. Depending on thefault, it issues a voice message when the system is disarmed or armed asindicated in the table below:7.2 Changing the batteryThe control panel indicates a detector battery fault byissuing the voice message “fault, voltage, detector X”.To check whether the detector lithium power pack is faulty,press the detector test button.IMPORTANT: if the red LED does not light up when the testbutton is pressed, the lithium power pack needs replacing.Message issued by the control panel Cause“beep, fault, detector X” no microSD card inserted orcard not recognised or faulty(*)“beep, fault, tamper, detector X” detector not properly clippedon to base“beep, fault, voltage, detector X” lithium battery low“beep fault, radio link, detector X” radio link between detectorand control panel faulty(*) check there is a micro SD card present and whether it is properly inserted.