Power On Indicator
Regularly check that the green power light flashes every 45 seconds - the unit cannot work without a
good battery, properly connected.
Low Battery Indicator
If the unit beeps every 45 seconds and
CP
is on the display, then the battery is depleted. Remove from
the mounting plate (see figures 5&6). Replace the battery. Use only the following 9V Alkaline batteries:
Duracell MN1604 or Energizer 9V. (See page 13, if the tamperproof screw has been fitted). Attach the new
battery to the battery snaps firmly with the correct orientation. Button test the alarm to check the battery
is installed correctly and that it is not depleted.
(The battery will usually last over 1 year in standby under normal conditions. An undepleted battery can
power a unit in alarm for over 10 hours. The life will be reduced if the unit regularly goes into alarm or if
it is exposed to excessive temperatures for long periods).
Amber Fault Indicator
If the unit beeps and the amber light flashes simultaneously every 45 seconds and
SF
is on the display,
the self-checking circuitry may have detected a fault. Follow the checklist to confirm that the unit is
actually defective.
Checklist in the event of problems
1. Remove from mounting plate and check that the battery is connected and firmly snapped on to the
connectors.
2. Disconnect the battery for 1 minute and re-connect (this resets the unit).
3. If the problem persists replace the battery.
If none of the above solve the problem the unit is probably defective and must be replaced. See “Getting
the CO Alarm Serviced Page 24)”.
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