Siemens LMV51 Series Basic Documentation page 237

Error Diagnostic Device
code code
A6 7A LC
A6 7B LC
A6 7C LC
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
Siemens Building Technologies Basic Documentation LMV5...
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system
Display
External Fault Load Controller Excessive voltage value or wrong polarity
PT1000 (X60)
External Fault Load Controller Excessive voltage value or wrong polarity
PWM
External Fault Load
Excessive voltage value or wrong polarity
Controller
voltage measurement input 2 (X61)
External Fault Load Controller Excessive voltage value or wrong polarity
current measurement input 2 (X61)
External Fault Load Controller Excessive voltage value or wrong polarity
voltage measurement input 3 (X62)
External 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 ex-
ceeded
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 ba-
sic 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
Meaning for the LMV5x system Troubleshooting
Check wiring of input
*1)
Check wiring of input. Check input voltage value
Check wiring of input. Check input actual value
Check wiring of input. Check input voltage value
Check wiring of input. Check input actual value
*1)
*1)
*1)
*1)
*1)
*1)
*1)
*1)
*1)
*1)
*1)
*1)
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CC1P7550en
13.08.2004