Siemens LMV5 Series Basic Documentation

Also see for LMV 5 Series: User manual Manual Technical instructions Quick start guide Manual

220/278Siemens Building Technologies Basic Documentation LMV51... CC1P7550enHVAC Products 15 Addendum 1: List of fault status messages of LMV51... system 01.10.2003ErrorcodeDiagnosticcodeDevice Display Meaning for the LMV5x system TroubleshootingA6 6F LC Internal Fault Load Controller Fault during diode test PT100 input *1)A6 70 LC Internal Fault Load Controller Measured value varies too much:PT100 sensor (X60)Check wiring of input.A6 71 LC Internal Fault Load Controller Measured value varies too much:PT100 line (X60)Check wiring of input.A6 72 LC Internal Fault Load Controller Measured value varies too much:PT1000 (X60)Check wiring of input.A6 73 LC Internal Fault Load Controller Measured value varies too much:PWM*1)A6 74 LC Internal Fault Load Controller Measured value varies too much:Voltage measurement input 2 (X61)Check wiring of input. Check input voltage value forhumming voltagesA6 75 LC Internal Fault Load Controller Measured value varies too much:Current measurement input 2 (X61)Check wiring of input. Check input voltage value forhumming voltagesA6 76 LC Internal Fault Load Controller Measured value varies too much:Voltage measurement input 3 (X62)Check wiring of input. Check input voltage value forhumming voltagesA6 77 LC Internal Fault Load Controller Measured value varies too much:Current measurement input 3 (X62)Check wiring of input. Check input voltage value forhumming voltagesA6 78 LC Internal Fault Load Controller Excessive voltage value or wrong polarityPT100 sensor (X60)Check wiring of inputA6 79 LC Internal Fault Load Controller Excessive voltage value or wrong polarityPT100 line (X60)Check wiring of inputA6 7A LC Internal Fault Load Controller Excessive voltage value or wrong polarityPT1000 (X60)Check wiring of inputA6 7B LC Internal Fault Load Controller Excessive voltage value or wrong polarityPWM*1)A6 7C LC Internal Fault Load Controller Excessive voltage value or wrong polarityvoltage measurement input 2 (X61)Check wiring of input. Check input voltage value