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Electrical
Replacement Control Board
Disconnect the unit from the power
source before beginning service
work. Incorrect use or connections
can cause electrical shock.
Wear safety goggles when working
with refrigerants. Refrigerants can
cause eye injury.
Use extreme caution when discon-
necting hoses. Pressurized refriger-
ant may be present in hoses. Point
hoses away from you and anyone
nearby.
Instructions
These instructions outline the basic steps to
replace the control board. Follow the prompts
on the control panel to move through the pro-
cedure correctly.
Remove the Existing Control Board
1. Disconnect unit from the power source.
2. Remove shrouding.
3. Remove the upper right and left hand
screws from the control panel, then tilt the
control panel towards the front of the unit.
CBP5
CBP6
SP00D00517
2018-07-11
P1
P5
P6
P2
P3
CBP1
CBP8
Figure 3-6. Control Board Connector Identification
4. Disconnect all wires from control board in-
cluding keypad and display ribbon cables.
5. Remove screws securing control board in
place, and remove control board.
Install the Replacement Control Board
1. Assemble the display to the replacement
control board and attach the display ribbon
cable to the control board.
2. Connect wires as shown in Figure 3-6.
3. Tilt the control panel down and secure with
two screws.
4. Download new software and install it follow-
ing the "Updating System Software" section
procedure.
5. After updating the software, exit the "Display
Test."
6. Enter Service Menu and select "Reset All."
7. Turn the unit OFF.
8. Insert the SD card and install the software
loaded in Step 4, again.
9. After installing the software, exit the "Display
Test" again.
10. Enter the Service Menu and perform the
following in the order listed as Steps 11
through 17.
11. Calibrate Load Cells.
12. Calibrate Air Flow.
13. Set Tank Tare.
J1
P8
CBJ1
54
ACS 561 Service Manual
P15
CBP15
P19
CBP19
P18
CBP18
Robert Bosch GmbH
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