WEN DF400iX
Generator · DF400iX. Specs from the manufacturer page (checked ).

The WEN DF400iX is a dual-fuel portable inverter generator rated at 3200 rated watts and 4000 surge watts on gasoline, or 2900 rated watts and 3200 surge watts on propane. It has two 120V household receptacles, one 120V 30A NEMA TT-30R RV receptacle, and an electric start with a recoil pull starter as backup. A WEN Watchdog CO Shutdown Sensor turns the generator off if dangerous carbon monoxide levels are detected.
Key features
- Dual fuel: gasoline gives 4000 surge watts and 3200 rated watts; propane gives 3200 surge watts and 2900 rated watts
- Auto Fuel Selection Technology switches from propane to gasoline for longer run times
- Keyless electric start with recoil pull starter as backup
- Outlets: two 3-prong 120V household receptacles, one 120V 30A NEMA TT-30R, one 12V DC receptacle, two 5V USB ports, and a digital fuel and load display
- Fuel shutoff uses up the fuel remaining in the carburetor before the unit shuts down
- WEN Watchdog CO Shutdown Sensor shuts the generator off if dangerous carbon monoxide levels are detected
- 58 dBA at quarter load, 22 feet, from an EPA III compliant 212cc engine
- 2.2-gallon tank provides up to 8.5 hours of half-load run time; Eco-Mode adjusts fuel use to the connected load; units can be paralleled with a WEN Parallel Connection Kit (sold separately)
What it is for
- home backup power
- RV use
- camping
- hunting
Specifications
| Running watts | 3200 W |
|---|---|
| Peak / surge | 4000 W |
| Fuel | dual-fuel |
| Tank | 8.3 L (2.2 gal) |
| Run time at 50 % load | 8.5 h |
| Noise | 58 dB |
| CO shutoff | Yes |
| AC output voltage | 120V |
| Warranty | 3 years |
From the WEN page. Values the manufacturer does not publish are left out.
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Anker SOLIX Smart Generator 5500
Honda EU3200i
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Firman W03383
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WEN DF400iX comparisons
- DF400iX vs Generac iQ5200
- DF400iX vs Anker SOLIX Smart Generator 5500
- DF400iX vs Honda EU3200i
- DF400iX vs Champion 5500-Watt Dual Fuel Inverter
- DF400iX vs Firman W03383
Connection and wiring
Follow the diagrams in the WEN manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
- Parallel connection, manual page 2 →
- Parallel connection, manual page 11 →
- Parallel connection, manual page 27 →
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long does the WEN DF400iX run on a tank?
The maker rates it at 8.5 hours at 50 % load (about 1,600 W) on a 2.2-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the WEN DF400iX start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 4000 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.