Name
Date
Designation
Prepared
JF 05.07.13
Service Manual BB 150
Index
Name
Date
Document No.
Page
File
50078923_04_CN
50 079 823
22/ 22
55
•
Bus cable and
sensor block
both in working
order.
Switch the unit off.
Disconnect the bus
cable to the sensor
block at the main board.
Attach the test set
(cable/sensor block).
Switch the unit on.
Perform the functional
test.
Test set operational:
•
Repeat the functional test of
the individual installed
components. Replace the
cable or sensor block.
Test set not operational:
•
Replace the main board.
99
Ohmmeter
The door switch contact
is closed when the glass
door is open!
Perform the functional
test at the main bard
input.
If defective: Replace the
door switch.
•
If defective: Replace the
main board.
77
Error in the CO
2
cal range:
Initiate an auto-start.
Temperature adjustment
error:
If the error reoccurs,
replace the measuring cell.
Replace the measuring
cell.
88
Check the setup
location (drafty, direct
sunlight, etc.)
If necessary, change the
setup location/conditions.
Replace the measuring
cell.
