Fault Codes:
Hyundai HX220 NL EPFC 237（644-2）
Fault Description:
External Speed Command input (Multiple UnitSynchronization)- Data Erratic, Intermittent, orIncorrect. Communication between multipleengines may be intermittent. External speed command input (multi-unit synchronization)- data unstable, intermittent or incorrect. Communication among multiple engines may be intermittently interrupted
