Controller displays E13 and generator will not run, often after wiring changes

Safety first: De-energize both utility and generator sources. Lock out and tag out breakers. Verify with a meter that all terminals are de-energized before touching conductors.

• Verify phase sequence: For 3‑phase Honda standby generators, confirm that the output lugs (L1, L2, L3) are connected to the transfer switch in the correct order per the wiring diagram. Correct any swapped phases.
• Check transfer switch connections: Ensure that the generator and utility phases are landed on the proper terminals in the ATS. Miswiring can cause phase rotation errors and motor damage.
• Inspect sensing wiring: If the controller uses separate phase-sensing leads, verify they are connected to the correct phases and are not open or shorted.
• Test with phase rotation meter: An electrician can use a phase rotation meter to confirm correct sequence at both generator and load side.
• Controller fault: If wiring is correct and E13 persists, the phase rotation sensing circuit on the controller PCB may be defective and require replacement.