Page 7-36 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Symptoms Possible Causes What to Do
CONTINUED …
Repeated HW FAULT
alarms, fan not turning,
ventilator gets
excessively hot.
Event Log shows
FAN FLT1.
Defective power board.
Replace the power board. . See Power
Board Assembly in Chapter 8 for
instructions.
Electro static discharge
(ESD).
Clear the alarm. Reduce static causing
conditions in the operating environment.
Repeated HW FAULT
alarms.
Event Log shows
EEPROM.
Defective main board. Replace the main board. See Main Board
Assembly in Chapter 8 for instructions.
Electro static discharge
(ESD).
Clear the alarm. Reduce static causing
conditions in the operating environment.
Repeated HW FAULT
alarms.
Event Log shows
INTRRPT1 or
INTRRPT2.
Defective main board. Replace the main board. See Main Board
Assembly in Chapter 8 for instructions.
RESET alarm.
RESET alarm occurs
at the conclusion of
POST after performing
the Watchdog test,
Battery Duration test,
or any other test which
causes the ventilator
to go inoperative; other
than pressing and
holding the
On/Standby button.
Event Log shows LN
VENT1
This is a normal feature.
Press the Silence Reset button twice to
clear the alarm
RESET alarms:
CRC
POST
RUNAWAY
STACK
Check the Event Trace to determine the
kind of error. (See the LTV
®
1200 or the
LTV
®
1150 Ventilator Operator's Manual for
instructions on using the event trace.)
Electrostatic discharge
(ESD).
Clear the alarm. Reduce static causing
conditions in the operating environment.
Defective memory board. Replace the memory board. See Memory
Board in Chapter 8 for instructions.
Defective main board. Replace the main board. See Main Board
Assembly in Chapter 8 for instructions.
RESET alarm.
Repeated RESET
alarms.
Event Log shows
CRC, STACK, POST,
or RUNAWAY.
All other causes. Contact Pulmonetic Systems.
NO CAL DATA alarm.
NO CAL displayed in
place of monitored
values.
Event Log shows
NO CAL.
Failed or missing calibration
records.
Recalibrate the vent. See Chapter 6 -
Maintenance & Calibration for instructions.
If the problem reoccurs after careful
recalibration, a transducer may be drifting
excessively. Replace the analog board.
See Analog Board Assembly in Chapter 8
for instructions.
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