Denso BHT-470BWB-CE Operator's Manual page 35

Shutdown due to low battery
? Problem
When the power is turned on or off or during
execution of programs, the battery output level has
lowered to the extent the BHT can no longer
operate.
If lower battery is detected, the BHT beeps
five times (for 0.1 second per beep) and
then turns itself off. Depending upon the
battery level, the beeper may not sound five
times.
? Solution
Replace or recharge the battery cartridge.
Service life warning for backup battery
? Problem
The backup battery has been charged/discharged
by the specified number of times so that the battery
capacity lowers below the specified level.
? Solution
Replace the backup battery. For the replacement
procedure, refer to the
BHT-400BB- CE/400BWB- CE User's Manual.
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