End of Service
Life
The CO alarm automatically
detects and signals the end
of its useful service life�
In this case, the Fault LED
fl ashes every 60 seconds
followed by three short
acoustic signals�
When the CO alarm indicates the end of its
service life, replace the CO alarm immediately�
Activating Hush Mode
You can activate Hush mode when you want to switch off
the alarm signal of the CO alarm for a time�
1
Press the Test/Hush button twice� The Power LED and
Alarm LED fl ash simultaneously every 10 seconds.
2
If you want to deactivate Hush mode manually, press
the Test/Hush button� You will hear a short acoustic
signal and the Power LED fl ashes every 50 seconds.
Hush mode is deactivated�
Hush mode is also deactivated if
• the CO alarm detects a critical concentration of carbon
monoxide while Hush mode is active or
• after two minutes without any incidents occurring�
39
Power
Power
Fault
Alarm
Alarm