4-26
Failure description Possible cause Recommended action
After the leak test,
the alarm of [PEEP
Safety Valve Failure]
occurs.
Control of safety valve by the
monitor board fails.
the safety valve is damaged,
replace the safety valve. If the
safety valve is in good condition, it
indicates that the auxiliary control
board or the main control board is
faulty regarding the control path of
the safety valve. Check the
connecting lines or replace the
faulty board.
4.11.4.3 Definitions of Error Information during Breathing System Leak
Test in Mechanical Ventilation Mode
During the leak test, many abnormal factors or operations may result in breathing system manual
circuit leak test failure. The following table lists the definitions of various abnormal factors. If the
breathing system leak test fails, the relevant error code will be recorded in the service logbook.
S/N Cause Description Error code
1
The user cancels the
command.
/ 0000 0001
2
The bag/vent switch is in bag
position.
/ 0000 0002
3 ACGO is ON. / 0000 0004
4 The drive gas pressure is low. / 0000 0008
5
The airway pressure sensor has
an error.
The zero point of airway pressure sensor is
not within the range of 0~1200(AD).
0000 0010
6 The flow sensor has an error. / 0000 0020
7 Pressure rise time is too long.
The longest time for pressure to rise to the
specified pressure threshold 30cmH2O
(+5cmH2O) exceeds 30s.
0000 0040
8 Pressure drops drastically. Pressure is less than 18cmH2O. 0000 0080
9 Leakage is too large. Leakage exceeds 1000ml/min. 0000 0100
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