ACS 653, ACS 663 Service Manual
SP00D00624
2021-04-08
Robert Bosch GmbH
66
Electrical
Electrical System Operation and Repair
Electrical System Operation .................................................................................67
Power Board and Power Supply Operation .....................................................................67
Power Board Connector Assignments .............................................................................67
Control Board Operation ...................................................................................................68
Control Board Connector Assignments ...........................................................................68
Control Board Functions ...................................................................................................68
Sensors and Transducers ..................................................................................................69
Control Board Software Updating Methods .....................................................................69
Electrical System Repair ......................................................................................
74
Replacement Power Board ................................................................................................
74
Replacement Control Board .............................................................................................75
Replacement High-Pressure Cut-Out Switch ..................................................................76
Replacement Fan Assembly .............................................................................................
77
Replacement Air Flow Sensor (for R1234yf only) ............................................................78
Replacement Scale Assembly ..........................................................................................
79
Scale Calibration (Load Cells) ...........................................................................................
79
Replacing Load Cell ...........................................................................................................80
Replacement Refrigerant Identifier (if present) ...............................................................81