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
24/ 24
4.7.3 ERROR IN THE TEMPERATURE MEASUREMENT/REGULATING CIRCUIT -
INCUBATION MODE
Error
code
Test
equipment /
Test at the unit
Inspections and tests
Possible corrective
actions
66
Bus cable and
sensor block
both in working
order.
Switch the unit off.
Attach the test set
(cable/sensor block).
Switch the unit on.
Perform the functional test
Test set operational:
•
Replace the sensor
block.
Test set not operational:
•
Replace the main
board.
100
Heater on LED
continuously lit.
Wattmeter
Perform the functional test of
relay K1 on the main board.
(Switch the unit off and on.)
Check the heater actuators
(FL 3). Check the power
consumption.
Replace the main
board.
101
Sample protection
LED active.
The unit's set value is lower
than the ambient room
temperature or
countermands the regulating
system.
Room temperature is too
high.
Check the unit's setup
location (exposure to direct
sunlight).
Check the heater actuators
(FL 3).
Select a higher set
value.
Lower the room
temperature.
Change the setup
location.
Replace the main
board.
104
The temperature
display reads 99.9.
Replace sensor block.
