Honeywell
Engine unable to sustain load
Generator stalls when large loads are applied
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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
Undersized gas supply line, Dirty fuel system, Weak ignition system, Overloading beyond generator rating
How to Fix / Troubleshooting
Safety first: Isolate the generator from the load by opening the main breaker before troubleshooting. Turn OFF the unit and shut off gas for fuel work.
Steps:
- Load management: Reduce or stagger large loads (AC, electric heat, pumps) to stay within the Honeywell generator's rated kW.
- Gas supply: Have a gas fitter verify line sizing and pressure under load at the generator inlet.
- Fuel system cleaning: Clean or service the carburetor/throttle body and replace any inline fuel filters or screens.
- Ignition check: Replace spark plugs and inspect ignition coil performance.
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Repair Difficulty
Hard
4/5
Required Part
Fuel Supply Piping
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