Error Messages In The Co 2 Display Field - Bosch ETT 008.31 Repair Instructions

7.2 Error messages in the CO
Error messages
Err
1
Err
2
Err
8
Err
16
Err
32
Err
64
Err
128
32
display field
2
Possible cause
Flow disturbed during zero adjustment
Flow of test gas disturbed
Fault in measuring-channel identification
Fault in sensor-board equipment
Faulty display control
Altitude entered incorrectly;
incorrect measurement by air-pressure gauge.
Chopper motor not recognized.
Trouble-shooting
See Section 8.2 "Flow faults"
See Section 8.2 "Flow faults"
See Section 8.5 "Faulty channel
identification"
See Section 8.8
"Faulty sensor-board identification"
Replace display module.
Also see Section 8.3
See Section 8.9
"Faulty pressure-influence correction"
See Section 6.6
"Recognition of chopper motor"