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6. Interpreting signals
Diagnosis Action Red LED
Yellow LED Acoustic signal Replace alarm
Predicting faults
Low battery Press and hold down button Off
Fast flashing (0.5 sec.)
Gets louder until full volume
is reached
Recommended
Dirty smoke chamber Press and hold down button
Fast flashing (0.5 sec.)
alternating with yellow LED
Fast flashing (0.5 sec.)
alternating with red LED
Gets louder until full volume
is reached
See below*
Test for end of service life Press and hold down button
Fast flashing (0.5 sec.)
alternating with yellow LED
Fast flashing (0.5 sec.)
alternating with red LED
Off
Yes
Alarm memory
24-hour memory 2 x flashing every 16 sec.
Long-term memory Press and hold down button Fast flashing (0.5 sec.)
Identify beeping alarms
Flat battery Press and hold down button Off
Fast flashing (0.5 sec.)
Gets louder until full volume
is reached
Yes
Fault in smoke chamber Press and hold down button Off
Fast flashing (0.5 sec.) Off Yes
* Note: We recommend vacuuming the device carefully using a vacuum cleaner and then waiting for five minutes
before testing the device again using the test button. If there are repeated false alarms, the device must be replaced.
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