E28
Himoinsa
Fuel Solenoid / Stop Solenoid Fault
Controller shows E28 and the generator will not start; fuel pump does not run.
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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
Failed fuel stop solenoid, No power to solenoid from controller, Broken solenoid plunger, Wiring harness fault
How to Fix / Troubleshooting
Safety: Isolate battery before working near fuel components.
- Listen for solenoid click: During a start attempt, listen for a click at the fuel solenoid. No sound suggests no power or a failed solenoid.
- Measure voltage: Check for DC voltage at the solenoid connector when start is commanded. If absent, trace wiring back to the controller and check fuses/relays.
- Bench test solenoid: Remove the solenoid and apply rated voltage directly from a battery to confirm operation. Replace if it does not actuate.
- Check linkage: Ensure the solenoid plunger correctly engages the fuel rack or lever and is not mechanically jammed.
- Re-test start: After repair, clear E28 and perform a manual start to confirm fuel delivery.
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Repair Difficulty
Medium
3/5
Required Part
Fuel Stop Solenoid
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