High Fuel Pressure
Eaton
Excessive Gas Pressure at Engine Regulator
Controller displays “High Fuel Pressure” or fuel system fault; engine may run rough or surge.
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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
Primary gas regulator at meter or LP tank set too high, Failed secondary regulator at generator, Incorrect regulator type installed for Eaton standby generator, Regulator vent blockage causing malfunction
How to Fix / Troubleshooting
Safety first: Turn generator OFF and disable automatic start. High gas pressure is dangerous and must be corrected by qualified personnel.
Steps:
- Visual inspection: Inspect the secondary regulator on the generator for damage, icing, or blocked vent screens. Clear any debris from vents.
- Do not adjust sealed regulators: Do not attempt to adjust factory-sealed regulators yourself.
- Call gas professional: Have a licensed gas technician measure inlet pressure at the generator and adjust or replace the primary and/or secondary regulators to meet Eaton’s specified range.
- Retest: After correction, clear the alarm and run the generator under load to confirm stable operation.
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Repair Difficulty
Professional Required
5/5
Required Part
Secondary Gas Regulator
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