Siemens LMV51 Series - Page 237

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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system 13.08.2004
Error
code
Diagnostic
code
Device Display Meaning for the LMV5x system Troubleshooting
A6 7A LC External Fault Load Controller Excessive voltage value or wrong polarity
PT1000 (X60)
Check wiring of input
A6 7B LC External Fault Load Controller Excessive voltage value or wrong polarity
PWM
*1)
A6 7C LC External Fault Load
Controller
Excessive voltage value or wrong polarity
voltage measurement input 2 (X61)
Check wiring of input. Check input voltage value
A6 7D LC External Fault Load Controller Excessive voltage value or wrong polarity
current measurement input 2 (X61)
Check wiring of input. Check input actual value
A6 7E LC External Fault Load Controller Excessive voltage value or wrong polarity
voltage measurement input 3 (X62)
Check wiring of input. Check input voltage value
A6 7F LC External Fault Load Controller Excessive voltage value or wrong polarity
current measurement input 3 (X62)
Check wiring of input. Check input actual value
A6 80 LC Internal Fault Load Controller Fault during internal muliplexer test PT100
sensor
*1)
A6 81 LC Internal Fault Load Controller Fault during internal multiplexer test
PT100 line
*1)
A6 82 LC Internal Fault Load Controller Fault during internal multiplexer test
PT100
*1)
A6 90 LC Internal Fault Load Controller Number of maximum sync failures ex-
ceeded
*1)
A6 91 LC Internal Fault Load Controller Wrong CRC during SYNC message *1)
A6 92 LC Internal Fault Load Controller Wrong CRC during PDO message *1)
A6 93 LC Internal Fault Load Controller Main loop counter does not agree with ba-
sic unit
*1)
A6 96 LC Internal Fault Load Controller Fault during multiplexer test *1)
A6 97 LC Internal Fault Load Controller Paraccess with FINISH unsuccessful *1)
A6 9B LC Internal Fault Load Controller Fault PageAccess, invalid access status *1)
A6 9C LC Internal Fault Load Controller Fault voltage monitor test *1)
A6 9E LC Internal Fault Load Controller Fault during readout of PDO message *1)