11 TroubleshootingYASKAWA TOEP YEACOM 06A V1000 Option PROFINET SI-EP3/V Installation Manual 61■ Minor Faults and AlarmsLED Operator Display Fault NametooFA30 to oFA43Option Fault (Port A).Communication ID error.Cause Possible SolutionOption hardware fault. Replace the option.LED Operator Display Minor Fault NameCALL Serial Communication Transmission Error.Communication is not established.Cause Possible Solution Minor Fault(H2- = 10)Communication wiring is faulty, thereis a short circuit, or improperconnection.Check for wiring errorsCorrect the wiringRemove ground shorts and reconnect loose wiresYESProgramming error on the master side. Check communications at start-up and correctprogramming errors.Communication circuitry is damaged. Perform a self-diagnostics checkReplace the drive if the fault continues to occur