Bosch ACS 753 User Manual

ACS 753, ACS 763, ACS 863 Service Manual
SP00D00609 2018-03-26 Robert Bosch GmbH
66
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.
NOTE: TANK TARE is a xed value already
memorized in the main board spare parts.
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 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.
Figure3-6.ControlBoardConnectorIdentication
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.
Install Replacement Control Board
NOTE: All control boards are shipped from
the factory in the Production Boot Mode.
Service centers must follow these installation
procedures to set the boot mode to Normal.
1. Attach the display and keypad ribbon cables
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. Power up the unit. The unit will be in the
Production Test Mode.
5. Check the software version. If necessary,
download the new software and follow the
Install Current Software procedure under
Updating System Software Instruction in the
Diagnostics and Testing section.
6. Access the Service Menu and enter yearly
password.
7. Scroll to the Set Boot Mode option and
enter access code 28768347.
8. If necessary, scroll to Normal and select OK
icon, for normal machine operation.
P6
P19
P8
CBJ1
CBP8
CBP19
CBP6
CBP10
CBP9
CBP1
CBP3
CBP2
CBP18
CBP15
CBJ6
CBP17 CBP11
P15
P18
J1
J7
J3
P13
P12
P17
J8
J2
LS1
P3
P2
P9 P10
J6
P1
P11

Bosch ACS 753 Specifications

General

Brand	Bosch
Model	ACS 753
Category	Air Conditioner
Language	English