- Code: C6400
- Description: Zero-crossing signal problem
• The engine PCB does not detect the zero-crossing signal for the time specified below. At power-on: 3 s Others: 5 s
- Causes: Poor contact in the connector terminals. Defective power supply PCB. Defective engine PCB.
- Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Check if the zero-crossing signal is output from YC2-5 on the power supply PCB. If not, replace the power supply PCB. Replace the engine PCB if C6400 is detected while YC2-5 on the power supply PCB outputs the zero-crossing signal.
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