Troubleshooting
92
t No audible alarm is given in a power failure alarm condition.
YES
YES
YES
NO
YES
NO
NO
NO
No audible alarm is given even in
normal use.
앫A power failure alarm occurred
recently.
앫The unit has been out of use for a
long time.
앫In a power failure alarm condition,
an audible alarm sounds loud
enough at first, but it gradually
becomes lower.
See (2) r “No audible alarm is
given.”
The rechargeable battery on the
control board is not charged.
Connect the unit to the supply
mains and charge the battery for
about 50 hours.
The rechargeable battery has
deteriorated.
Replace the rechargeable battery.
The connector of the rechargeable
battery (the replaced one) on the
control board has come off.
Connect the connector securely.
Failure of the control board
y The alarm lamp on the control panel does not come on.
YES
NO
YES
NO
The alarm lamp comes on when the
alarm lamp board is replaced with a
functional one.
Failure of the LCD display board
Failure of the alarm lamp board
Connect the cable in the control
panel securely.
The cable in the control panel is
connected properly.
❋ The alarm lamp comes on only in a high priority alarm condition.
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