5-725-8. Description of Error MessagesIntroductionErrors are classified into critical failure and non-critical failure.Critical failureCritical failure may obstruct the electromagnetic flowmeter operation, if not corrected,ultimately damage the flowmeter. When critical failure occurs during operation, an errormessage will appear on the converter’s display and the electromagnetic flowmeter willcontinue to output the preset value in the abnormality treatment (failsafe) direction. The errormessage and the self-diagnostic results will be visible on the display.Perform the proper correction measures, referring to the actions below.Error code of serious troubleErrorcode Error content Action LCD displayErr-02 CPU (ROM, RAM)CHECK SUM ERROR1. Restore power.2. Replace ROM.3. Replace main P/C.Err - 02CPU CHECKERRORErr-04 NVMREAD AFTER WRITEERROR1. Restore power.2. Replace main P/C. Err - 04NVM CHECKERROR
