27
Faults, Cause and Remedy
403 Measured value of the Dräger-
Sensor XXS H
2
S is in the
negative range
Carry out the fresh air calibra-
tion, page 36.
404 DrägerSensor XXS H
2
S is not
inserted
Check DrägerSensor XXS H
2
S,
page 46.
405 Error during the function test
with gas (bump test) of the
DrägerSensor XXS H
2
S
Repeat the function test, cali-
brate or replace the
DrägerSensor XXS H
2
S, if
necessary, page 46.
407 Failed filter test. Repeat filter test with X-dock.
408 Failed rise time test. Repeat rise time test with X-dock.
501 The zero point calibration of
the DrägerSensor XXS CO is
not valid
Carry out the fresh air calibra-
tion, page 36.
502 The span calibration of the
DrägerSensor XXS CO is not
valid
Carry out the span calibration,
page 40.
503 The measured value of the
DrägerSensor XXS CO is in
the negative range
Carry out the fresh air calibra-
tion, page 36.
504 The DrägerSensor XXS CO is
not inserted
Check the DrägerSensor XXS
CO, page 46.
505 Error during the function test
with gas (bump test) of the
DrägerSensor XXS CO
Repeat the function test, cali-
brate or replace the DrägerSen-
sor XXS CO, if necessary,
page 46.
507 Failed filter test. Repeat filter test with X-dock.
508 Failed rise time test. Repeat rise time test with X-dock.
Special symbol »«
and displayed numerical
code:
Cause Remedy