LTV 1150 - Page 81

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 7-3
Symptoms Possible Causes What to Do
Low Pressure
display flashing.
LOW PRES alarm
occurred.
The Low Pressure display is flashed and
the LOW PRES message is displayed
when a low pressure alarm occurs. The
display will continue to flash even after the
condition clears. (See the LTV
®
1200 or
the LTV
®
1150 Ventilator Operator's
Manual for an explanation of the LOW
PRES alarm feature.)
Low Min Vol display
flashing.
LOW MIN VOL alarm
occurred.
The Low Min Vol display is flashed and
the LOW MIN VOL message is displayed
when a low minute volume alarm occurs.
The display will continue to flash even
after the condition clears. (See the LTV
®
1200 or the LTV
®
1150 Ventilator
Operator's Manual for an explanation of
the LOW MIN VOL alarm feature.)
O
2
% (O
2
Flush)
flashing.
LOW O2 PRES or HIGH
O2 PRES alarm occurred.
The O
2
% (O
2
Flush) display is flashed and
the LOW O2 PRES or HIGH O2 PRES
message is displayed when a low or high
O
2
pressure alarm occurs. The display will
continue to flash even after the condition
clears. (See the LTV
®
1200 Ventilator
Operator's Manual for an explanation of
the LOW O2 PRES and HIGH O2 PRES
alarm features.)
Control display
flashing when setting
a control.
Control setting is limited. A control's value can be limited by the
current settings of other controls. (See the
LTV
®
1200 or the LTV
®
1150 Ventilator
Operator's Manual for an explanation of
Control Limiting.)
Wrong model selected. If an incorrect model is selected, some
controls may not be lit and will not
operate. Verify the model number selected
in VENT MTNCE, MODEL matches the
model number on the front of the
ventilator. See Chapter 6 -Maintenance &
Calibration for instructions.
Misaligned LED. If displays are operating but misaligned,
remove the main board and realign the
LEDs or displays. See Main Board
Assembly in Chapter 8 for instructions.
A display or LED does
not illuminate.
Defective LED or display.
Defective main board.
If a display is not operating during the
display test, replace the main board. See
Main Board Assembly in Chapter 8 for
instructions.