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SERVICE MANUAL Troubleshooting 8.2.3.7. E381: Timeout on activating CAN protocol on Generator board / E382: HF not answering to CAN protocol These two messages have the same meaning, that is a no answer to main CPU (A5) from CAN messages, but their occurring is in different times. E381 is generated during power on, while E382 is displayed after a regular power on sequence. In both cases, the error can be generated by a bad connection of the CANBus or a fault on the local Generator CPU board, so the steps above described for E380 are applied. I-Max Touch 8-18 (Rev. 1)