Table of Contents
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First line:
Second line:
code number
1 at position ...
1
1
2
2
4
3
8
4
16
5
128
8
256
9
512
10
1024
11
2048
12
4096
13
8192
14
16384
15
32768
16
30
Malfunctions and rectification
Cause
Clock not responding
or
battery discharged
EEPROM not responding
Transmitting fault at the
serial connections.
Sensor measurement has
failed plausibility test.
Fan has failed or fan not
starting up. Either there is
no 40 V supply or there is
a defect on the fan.
Humidifier current is out-
side permitted values.
EEPROM has failed
checksum test.
Sensor calibration data in
EEPROM invalid.
Pressure sensor measured
values outside tolerance
There are invalid therapy
parameter values in the
EEPROM.
Data inconsistency, possi-
bly battery discharged
No communication with
EEPROM.
Communication with
watchdog failed.
Software fault
Rectification
Replace battery on control board (see section
7.9 on page 42).
If fault occurs again, replace control board
(see section 7.8 on page 39).
Replace fan or fan box. (see section 7.7 on
page 37).
Replace power board (see section 7.5 on
page 34).
Replace control board (see section 7.8 on
page 39).
Replace control board (see section 7.8 on
page 39).
If this occurs on final test bench, please
inform QM.
Replace control board (see section 7.8 on
page 39).
Check cable connections between fan,
power board and control board.
Replace fan or fan box (see section 7.7 on
page 37).
Replace power board (see section 7.5 on
page 34).
Replace power board (see section 7.5 on
page 34).
Replace control board (see section 7.8 on
page 39).
Replace control board (see section 7.8 on
page 39).
Check external and internal pressure meas-
urement hoses for blockages.
Replace control board (see section 7.8 on
page 39).
Replace control board (see section 7.8 on
page 39).
If this occurs on final test bench, please
inform QM.
Replace battery on control board (see section
7.9 on page 42).
Replace control board (see section 7.8 on
page 39).
Replace control board (see section 7.8 on
page 39).
Replace control board (see section 7.8 on
page 39).
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