KW8M Eco-POWER METER739.6 Self-diagnostic functionIf an error occurs, the following indication will be given.Indicator Meaning Output status To recoverERR0 CPU errorOFFTurn the power off and then on again.ERR1 Memory error* EEP-ROM life ended. Replace the unit.*Includes the possibility that the EEP-ROM’s life has expired.9.7 Power Failure MemoryEco-POWER METER memories integral electric power and working status to internal EEP-ROM untilwhen power supply is off. (Power failure guarantee)And every time to change each setting, each setting value is memorized to internal EEP-ROM at thesame time. Therefore, change setting frequently makes EEP-ROM’s life short. Avoid to usage like this.*Especially be careful if you set by communication.9.8 Applicable standardSafety standard EN61010-1EMCEMIEN61326-1Radiation interference field strengthNoise terminal voltageCISPR11 class ACISPR11 class AEMSEN61326-1Static discharge immunity EN61000-4-2RF electromagnetic field immunity EN61000-4-3EFT/B immunity EN61000-4-4Surge immunity EN61000-4-5Conductivity noise immunity EN61000-4-6Power frequency magnetic field immunity EN61000-4-8Voltage dip / Instantaneous stop /Voltage fluctuation immunityEN61000-4-11