689 D IH inverter communication error 􀂃 When the machine turns on, recovers from the energy save mode or front and right doors are opened and closed, a time out error for communicating with the IOB occurs. 􀂃 The IOB detects the break signal from the IH inverter after a communication between the IOB and IH inverter has already been detected. 􀂃 The IOB fails to communicate with IH inverter three times after the IOB has detected the break signal from the IH inverter. 􀂃 Defective IOB 􀂃 Defective IH inverter. 1. Turn the main power switch off and on. 2. If the error occurs again, replace the IOB and/or the IH inverter