Siemens LMV5 Series Basic Documentation page 221

Error Diagnostic Device
code code
A6 7D LC
A6 7E LC
A6 7F LC
A6 80 LC
A6 81 LC
A6 82 LC
A6 90 LC
A6 91 LC
A6 92 LC
A6 93 LC
A6 96 LC
A6 97 LC
A6 9B LC
A6 9C LC
A6 9E LC
A6 A0 LC
A6 A1 LC
A6 A2 LC
A6 A3 LC
A6 A4 LC
A6 A5 LC
Siemens Building Technologies Basic Documentation LMV51...
HVAC Products 15 Addendum 1: List of fault status messages of LMV51... system
Display
Internal Fault Load Controller Excessive voltage value or wrong polarity
current measurement input 2 (X61)
Internal Fault Load Controller Excessive voltage value or wrong polarity
voltage measurement input 3 (X62)
Internal Fault Load Controller Excessive voltage value or wrong polarity
current measurement input 3 (X62)
Internal Fault Load Controller Fault during internal muliplexer test PT100
sensor
Internal Fault Load Controller Fault during internal multiplexer test
PT100 line
Internal Fault Load Controller Fault during internal multiplexer test
PT100
Internal Fault Load Controller Number of maximum sync failures
exceeded
Internal Fault Load Controller Wrong CRC during SYNC message
Internal Fault Load Controller Wrong CRC during PDO message
Internal Fault Load Controller Main loop counter does not agree with
basic unit
Internal Fault Load Controller Fault during multiplexer test
Internal Fault Load Controller Paraccess with FINISH unsuccessful
Internal Fault Load Controller Fault PageAccess, invalid access status
Internal Fault Load Controller Fault voltage monitor test
Internal Fault Load Controller Fault during readout of PDO message
Internal Fault Load Controller XP smaller than min. value
Internal Fault Load Controller XP larger than max. value
Internal Fault Load Controller TN smaller than min. value
Internal Fault Load Controller TN larger than max. value
Internal Fault Load Controller TV smaller than min. value
Internal Fault Load Controller TV larger than max. value
Meaning for the LMV5x system Troubleshooting
Check wiring of input. Check input current value
Check wiring of input. Check input voltage value
Check wiring of input. Check input current value
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CC1P7550en
01.10.2003