All Power America Run Relay / Hold-In Circuit Failure

Generator starts and then immediately stops when the start button is released; no code is stored.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty run relay on control board, Open run/hold-in wiring, Defective oil pressure or run-permissive sensor, Control board logic fault

How to Fix / Troubleshooting

Safety first: Disconnect the battery and open the main breaker before accessing the control panel.

  • Check run relay: Identify the run relay on the All Power America control board (refer to schematic). Inspect for burned contacts or cracked solder joints. Replace the relay or board if defective.
  • Verify oil pressure switch: Some systems require oil pressure to close a run circuit. Test the switch for proper operation as described in the low oil pressure procedure.
  • Inspect wiring: Trace the run circuit wiring from the controller to the engine sensors and back. Repair any opens.
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Repair Difficulty

Hard 4/5

Required Part

Run Relay (on Control Board)
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