8
13. Limitations of CO Alarms
• This alarm will only indicate the presence of CO at the sensor.
• CO may be present elsewhere in the property.
• All alarms must be tested regularly to make sure the back up batteries
and the alarm circuits are in good operating condition.
• CO alarms cannot provide an alarm if the CO does not reach the
unit.
• Therefore, they may not sense CO on the other side of a closed door
or on a
different floor. If the alarm is located outside the bedroom or on a dif-
ferent floor, it may not wake up a sound sleeper.
• The use of alcohol or drugs may also impair ones ability to hear the
alarm.
• For maximum protection a CO alarm should be installed in each
sleeping area and on every level of a home. Hearing impaired occu-
piers should consider fitting additional strobe accessories to give a
visual alarm.
• CO Alarms are not a substitute for annual routine servicing of appli-
ances by a qualified installer.
Symptom
1. Green L.E.D. not lit.
2. Unit flashing “Lb” at
power up.
3. Alarm Beeping every 30
seconds.
4. Alarm does not sound
when test button
pressed.
5. Interconnected alarms
do not sound when test
button is pressed and
held.
Possible cause/solutions
a. Loss of mains power – check at Consumer Unit for
Blown Fuse or tripped Circuit Breaker.
b. Check that cables at back of alarm are correctly
seated
/wired in and the alarm is pushed fully
home.
See section 5. Also reference enclosed “Operator’s
Manual”.
See Paragraph 5 for Battery Guidance
See parts 1a and 1b above.
Check integrity of interconnect wiring connections. Do
not use 2 core and earth for this function, only 3 core
and earth
14. Troubleshooting
• Always turn off the mains supply to AC alarms before checking con-
nections etc..
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