TROUBLESHOOTING
I. Alarm/Walk test LED does not light when unit is walk-tested:
a. No power to detector
- Check cable, connection and power source.
b.LED selector not set to "ALARM"
- Check jumper position.
c. Not walking into detection pattern
- Check location of zones using pattern locator and re-test.
d. Background temperature equal or close to body temperature
- Reduced range can be expected when background and body temperature come close
or are equal to each other.
e. Defective unit
- Replace the circuit board.
II. Alarm/Walk test LED lit continuously:
a. The detector is seeing changing levels of infrared energy
- Clear area of all people and pets.
- If LED remains lit, cover detector with heavy paper and wait 1 to 2 minutes.
If LED extinguishes, check each detection zone to locate source of energy.
b. Defective unit
- If LED remains lit after detector has been covered with heavy paper, replace circuit
board.
III. Detector randomly alarms:
a. Power source being interrupted
- Check wiring and connection.
b. Cover not properly secured or excessive mounting surface vibration
- Make sure that the cover is firmly in position and that the detector is free from
vibrations.
c. The detector is seeing changing levels of infrared energy
- Switch all known sources, such as heaters, lights, air conditioning vents, etc.
See precautions listed in the section "Selecting mounting location".
