Aico Carbon Monoxide Alarm Ei 225EN - Manual (Page 10)

(Without this feature the CO level would need to be at 50ppm CO for 90 minutes for
an indication to be given). Note the Pre-Alarm signal may be triggered by CO coming
for example, from cooking with gas, from car engines or from nearby barbecues. This
is usually not a concern unless the Pre-Alarm signal persists until the alarm sounds
and the CO source is unknown.
NOTE: The CO Alarm may sound if cigarette smoke is blown into it, or aerosols are
released nearby.
CO ALARM MEMORY
- Red light is Off – No CO detected since reset or power up.
- Red light flashes 2 times (in 2 seconds) every 40 seconds, 50 ppm CO detected
for least about 90 minutes.
- Red light flashes 4 times (in 2 seconds) every 40 seconds, 100 ppm CO detected
for least about 40 minutes.
- Red light flashes 8 times (in 2 seconds) every 40 seconds, 300 ppm CO detected
for at least about 3 minutes.
When the test button is pressed the horn will sound, and the red light will only flash if the
unit has previously detected CO and been in alarm. The flash rate indicates the level of
CO detected as in table B.
Reset Memory by holding down the test button for over 20 seconds until the red light
stops flashing. Cover the horn with a cloth to muffle the alarm during this time.
Please note that the memory will also be reset when the unit is unpowered.
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