Siemens LMV5 Series Basic Documentation page 220

Error Diagnostic Device
code code
A6 6F LC
A6 70 LC
A6 71 LC
A6 72 LC
A6 73 LC
A6 74 LC
A6 75 LC
A6 76 LC
A6 77 LC
A6 78 LC
A6 79 LC
A6 7A LC
A6 7B LC
A6 7C LC
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Siemens Building Technologies Basic Documentation LMV51...
HVAC Products 15 Addendum 1: List of fault status messages of LMV51... system
Display
Internal Fault Load Controller Fault during diode test PT100 input
Internal Fault Load Controller Measured value varies too much:
PT100 sensor (X60)
Internal Fault Load Controller Measured value varies too much:
PT100 line (X60)
Internal Fault Load Controller Measured value varies too much:
PT1000 (X60)
Internal Fault Load Controller Measured value varies too much:
PWM
Internal Fault Load Controller Measured value varies too much:
Voltage measurement input 2 (X61)
Internal Fault Load Controller Measured value varies too much:
Current measurement input 2 (X61)
Internal Fault Load Controller Measured value varies too much:
Voltage measurement input 3 (X62)
Internal Fault Load Controller Measured value varies too much:
Current measurement input 3 (X62)
Internal Fault Load Controller Excessive voltage value or wrong polarity
PT100 sensor (X60)
Internal Fault Load Controller Excessive voltage value or wrong polarity
PT100 line (X60)
Internal Fault Load Controller Excessive voltage value or wrong polarity
PT1000 (X60)
Internal Fault Load Controller Excessive voltage value or wrong polarity
PWM
Internal Fault Load Controller
Excessive voltage value or wrong polarity
voltage measurement input 2 (X61)
Meaning for the LMV5x system Troubleshooting
*1)
Check wiring of input.
Check wiring of input.
Check wiring of input.
*1)
Check wiring of input. Check input voltage value for
humming voltages
Check wiring of input. Check input voltage value for
humming voltages
Check wiring of input. Check input voltage value for
humming voltages
Check wiring of input. Check input voltage value for
humming voltages
Check wiring of input
Check wiring of input
Check wiring of input
*1)
Check wiring of input. Check input voltage value
CC1P7550en
01.10.2003