| Code |
Software |
Possible cause |
Corrective action |
| 1178 |
UI application |
The unit was shut down after
low power was detected. The ac
supply was lost and all batteries
in unit are exhausted. |
1. Restore ac power, if possible.
2. Replace batteries. |
| 6001 |
Built in ongoing
tests (BIOT)
(technical alert --
LOSS OF POWER) |
The ac supply was lost and the
batteries are so low that all
power may be lost. The unit will
shut down in 5 minutes. |
1. Restore ac power, if possible.
2. Check battery connections.
3. Replace batteries (internal and external,if installed) as necessary.
4. Replace BBU PCB. |
| 6004 |
BIOT (technical
alert -- FAN FAILED
ALERT) |
Fan filter occluded or fan not
operational |
1. Make sure main fan is operating.
2. Make sure room temperature is not too low. Make sure that ventilator has warmed up and attained a steady-state temperature (after removing the ventilator from its packaging).
3. Make sure ventilator lid is securely closed and that the lid gasket is not torn.
4. Make sure vents in unit are not blocked.
5. Replace fan filter, as necessary.
6. Check that main fan/ventilator head harness connection is secure.
7. Replace main fan.
8. Replace air flow thermistor assembly. |
| 6026 |
BIOT (technical
alert -- CONTACT
SERVICE) |
Flow sensor offset has changed
by an unexpectedly large value |
1. Verify that tubes between flow sensor and pressure transducer are securely connected.
2. Make sure EXHAUST port is not blocked.
3. Check flow sensor calibration constants.
4. Replace flow sensor.
5. Replace pressure solenoid PCB. |
| 6008 |
BIOT (technical
alert -- KEYBOARD
FAILED) |
A key was held down longer
than expected |
1. Verify that keyboard cable is securely connected to UI display PCB.
2. Replace keyboard.
3. Replace controller PCB.
4. Replace UI display PCB. |
| 7213 |
POST |
VENT INOP signal is active |
1. See previous diagnostic codes in log for corrective actions.
2. Run EST.
3. Replace controller PCB. |
| 7230 |
POST |
Software error |
Many of the codes in this section represent “software errors.” The software continually makes reasonableness and other data checks. If any of these checks fails, a software error is logged and the ventilator is reset, which causes POST to run.
If POST does not pass, the ventilator issues up to two more system resets, waiting for POST to pass. If POST is still not passed, the ventilator declares a VENT INOP condition. As a result, the patient can breathe through the opened safety valve.
Similarly, if three or more software errors are detected within 24 operating hours, the ventilator declares a VENT INOP condition.
Often, a software error is a transient failure, which is not expected to recur. When the system is reset, POST passes, and ventilation continues. If a software error recurs or if multiple software errors occur, the problem requires corrective action. Contact your regional Nellcor Puritan Bennett Technical Support. |
