Page 7-30 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Problem Possible Causes What To Do
Defective AC source.
AC adapter power cord
loose.
Make sure the AC adapter is plugged into
a good AC source and is securely
connected to the ventilator. Verify the
power cord for the adapter is fully seated.
Defective AC adapter. Replace the AC adapter.
The ventilator doesn’t
operate from external
power.
Defective power board. Replace the power board. See Power
Board Assembly in Chapter 8 for
instructions.
Internal battery depleted. If the internal battery is depleted, charge
the internal battery for 24 hours by
connecting the external AC adapter and
plugging it into a good AC source.
Internal battery not
connected.
If the internal battery is not connected, the
Charge Status LED will show red.
Reconnect the internal battery. See
Internal Battery Pack in Chapter 8 for
instructions.
Defective internal battery. If the battery does not reach full capacity
after several charge cycles (vent should
run for more than 40 minutes on nominal
settings) replace the internal battery. See
Internal Battery Pack in Chapter 8 for
instructions.
The ventilator does not
operate from internal
battery.
The ventilator shuts off
when external power is
removed.
Defective power board. If the battery won’t charge completely after
replacing it, there may be a problem with
the charge circuit on the power board.
Replace the power board. See Power
Board Assembly in Chapter 8 for
instructions.
Internal battery deeply
discharged.
Charge the internal battery for 24 hours by
connecting the external AC adapter and
plugging it into a good AC source. If the
battery is deeply discharged, it may take
several cycles of charging and discharging
for the battery to reach a maximum charge.
Defective internal battery. If the battery does not reach full capacity
after several charge cycles (vent should
run for more than 40 minutes on nominal
settings) replace the internal battery. See
Internal Battery Pack in Chapter 8 for
instructions.
Battery doesn’t reach
full charge.
Battery depletes too
quickly.
Defective power board. If the battery won’t charge completely after
replacing it, there may be a problem with
the charge circuit on the power board.
Replace the power board. See Power
Board Assembly in Chapter 8 for
instructions.
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