Diagnostics And Testing - Bosch ACS 753 Repair Instructions

ACS 753, ACS 763, ACS 863 Service Manual
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I a g n o s T I C s and
Functional Check ..................................................................................................24
Updating System Software Instruction ............................................................................ 24
Recover Function ............................................................................................................... 25
Charge Function ................................................................................................................. 26
Diagnostics and Testing .......................................................................................28
Service Center Menu .......................................................................................................... 28
Diagnostics and Troubleshooting ..................................................................................... 28
Calibrate Load Cells ........................................................................................................... 28
Output Test .......................................................................................................................... 32
Input Test ............................................................................................................................. 33
Calibrate air flow ................................................................................................................. 33
A/C unit Internal Clearing .................................................................................................. 34
Service Vacuum .................................................................................................................. 34
End User Install .................................................................................................................. 35
Maintenance Counters ....................................................................................................... 35
Keypad Test ........................................................................................................................ 37
Set Serial Number ............................................................................................................... 37
Set Manufacturing Date ..................................................................................................... 37
Set Boot Mode .................................................................................................................... 38
Reset Board ........................................................................................................................ 38
Refrigerant Identifier (ACS 863 only) ................................................................................ 39
Charge Leak Test ................................................................................................................ 39
10 Days Leak Test (R1234yf only) ..................................................................................... 39
Default Vacuum Time ......................................................................................................... 39
Default Vacuum Leak Test Time ........................................................................................ 39
Default Precharge Leak Test Time .................................................................................... 39
Service hose length ............................................................................................................ 39
Depressurizing the Unit ........................................................................................40
Unit is Functional ............................................................................................................... 40
Unit is Not Functional ........................................................................................................ 40
Troubleshooting ....................................................................................................41
Grounding, Noise, and Power Issues ............................................................................... 41
Will Not Power-Up, No Display .......................................................................................... 42
Will Not Fill Tank ................................................................................................................. 43
Stuck In Clearing ................................................................................................................ 43
Will Not Recover ................................................................................................................. 44
Will Not Deep Recover ....................................................................................................... 45
Will Not Drain Oil ................................................................................................................ 46
Will Not Air Purge ............................................................................................................... 46
Will Not Evacuate (Vacuum) .............................................................................................. 47
Fails Leak Test .................................................................................................................... 48
Will Not Inject Oil or Dye .................................................................................................... 48
Will Not Charge ................................................................................................................... 49
Slow Charge ........................................................................................................................ 49
Will Not Hose Flush ............................................................................................................ 49
Will Not Print ....................................................................................................................... 50
Power Board Troubleshooting .......................................................................................... 51
Control Board Troubleshooting ........................................................................................ 51
Compressor Troubleshooting ........................................................................................... 52
Vacuum Pump Troubleshooting ........................................................................................ 53
Error Messages .....................................................................................................54
Robert Bosch GmbH
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Diagnostics and Testing

SP00D00609 2018-03-26