Replacement Control Board - Bosch ACS 553 Service Manual

Electrical

Replacement Control Board

WARNING: Disconnect the unit from the
power source before beginning service
work. Incorrect use or connections can
cause electrical shock.
WARNING: Wear safety goggles
when working with refrigerants.
Refrigerants can cause eye injury.
WARNING: Use extreme caution when
disconnecting hoses. Pressurized
refrigerant 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. Refer to Figure 3-6.
Remove Existing Control Board
1. Disconnect unit from the power source.
2. Remove the four screws under the control
panel.
3. Tilt the control panel upwards the front of
the unit.
4. Disconnect all wires from control board
including keypad and display ribbon cables.
5. Remove screws securing control board in
place and remove control board.
CBP13
CBP1
CBP6
1 689 975 295 2021-04-13
CBJ8
CBP17
P17
P13
P1
CBP8
Figure 3-6. Control Board Connector Identification
ACS 553, ACS 563 Service Manual
Install Replacement Control Board
NOTE: All control boards are shipped from the
factory without any software on board. Service
centers must follow these installation procedures
to set the board and get unit ready to use.
1. Attach the display and keypad ribbon cables
to the control board.
2. Connect wires as shown in Figure 3-6.
3. Keep the original SD card and format as
FAT 32.
4. Download right service software and
unzip it into AC/ACS unit original SD card.
5. Insert original SD card with service software
in new control board.
6. Tilt the control panel down and secure with
four screws.
7. Download the last AC/ACS software release
(take care about the model) and copy and
paste in one USB dongle (previously format
as FAT 32).
8. I n s e r t U S B d o n g l e i n t h e u n i t s l o t
(see Figure 1-1 in the Introduction section).
9. Remove the front plastic cover (needed for
tank calibration), then plug in power cord
and switch ON.
10. Unit ask for firmware update, press YES.
11. Unit ask to RESET the board erasing all the
data and calibrations stored, press YES and
please wait. After that service routine starts
with required settings.
CBP16
J8
P16
LS1
P19
J1
P8
64
CBP15
CBP19
CBP18
CBJ1
Robert Bosch GmbH