26
Faults, Cause and Remedy
404 DrägerSensor XXS H
2
S is not
inserted
Check DrägerSensor XXS H
2
S,
page 45.
405 Error during the function test
with gas (bump test) of the
DrägerSensor XXS H
2
S
Repeat the function test,
calibrate or replace the
DrägerSensor XXS H
2
S, if
necessary, page 45.
501 The zero point calibration of
the DrägerSensor XXS CO is
not valid
Carry out the fresh air
calibration, page 35.
502 The span calibration of the
DrägerSensor XXS CO is not
valid
Carry out the span calibration,
page 39.
503 The measured value of the
DrägerSensor XXS CO is in
the negative range
Carry out the fresh air
calibration, page 35.
504 The DrägerSensor XXS CO is
not inserted
Check the DrägerSensor XXS
CO, page 45.
505 Error during the function test
with gas (bump test) of the
DrägerSensor XXS CO
Repeat the function test,
calibrate or replace the
DrägerSensor XXS CO, if
necessary, page 45.
Special symbol » « and
displayed numerical code:
Cause Remedy