Generac iQ5200
3900 W, dual-fuel
Firman H03655
Generator · Hybrid. Specs from the manufacturer page (checked ).
The Firman H03655 is a dual-fuel inverter-generator with 3650 W running and 4550 W starting output on gasoline, and 3300 W running and 4100 W starting on LPG. It has a 208cc engine, a 5-gallon tank, and up to 14 hours of run time at 50% load.
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Running
3650W
Peak / surge
4550W
Fuel
dual-fuel
Run time @50 %
14h
Noise
67dB
Weight
50.8kg
Warranty
3yr
Key features
- 208cc dual-fuel engine running on gas or LPG
- Running watts 3650W (gas) / 3300W (LPG); starting watts 4550W (gas) / 4100W (LPG)
- 5-gallon tank with fuel gauge; up to 14 hours of run time at 50% load
- Recoil start with low oil shutoff
- CO Alert Sensor for carbon monoxide safety
- Multi control panel with covered outlets: (1) 5-20R 120V 20A duplex, (1) L5-30R 120V 30A twistlock, (1) TT-30R 120V 30A twistlock
- 3-year warranty
What it is for
- RV
Specifications
| Running watts | 3650 W |
|---|---|
| Peak / surge | 4550 W |
| Fuel | dual-fuel |
| Tank | 18.9 L (5.0 gal) |
| Run time at 50 % load | 14 h |
| Noise | 67 dB |
| AC output voltage | 120 Volts |
| Weight | 50.8 kg (112.0 lb) |
| Warranty | 3 years |
From the Firman page. Values the manufacturer does not publish are left out.
Similar inverter & portable generators
WEN GN5602X
4500 W, gasoline
WEN DF480iX
4000 W, dual-fuel
WEN DF475T
3800 W, dual-fuel
Anker SOLIX Smart Generator 5500
3600 W, tri-fuel
WEN DG4500iX
3650 W, dual-fuel
Briggs & Stratton P4500
3700 W
Cummins Onan P4500i
3700 W, gasoline
Firman H03655 comparisons
- H03655 vs Generac iQ5200
- H03655 vs WEN GN5602X
- H03655 vs WEN DF480iX
- H03655 vs WEN DF475T
- H03655 vs Anker SOLIX Smart Generator 5500
Connection and wiring
Follow the diagrams in the Firman manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
- Wiring diagram, manual page 2 →
- Wiring diagram, manual page 36 →
- Wiring diagram, manual page 37 →
- Wiring diagram, manual page 38 →
- Wiring diagram, manual page 39 →
Error codes and troubleshooting
| Code | Meaning | What to do | Manual page |
|---|---|---|---|
| Circuit Breakers | The receptacles are protected by an AC circuit protector that trips if the generator is overloaded or an external short circuit occurs. | Disconnect all electrical loads and determine the cause before using the generator again. If overloading caused the trip, reduce the load. Reset by pressing the protector button. Continuous tripping may damage the generator or equipment. | 8 |
| Oil Warning Indicator Light | Indicates the oil has fallen below the minimum level. The engine stops automatically and will not start until the proper amount of oil is in the crankcase. | Check the oil level when this light turns on. Add the proper amount of engine oil to the crankcase before attempting to start the engine. | 8 |
| Overload Indicator Light | Connected devices have exceeded the generator's wattage or amperage capacity, or a power surge occurred. The AC Power light goes off, the engine keeps running, and power to the receptacles is cut. | Keep the total power drawn from all receptacles within the nameplate rating. | 8 |
| Circuit Breaker | The receptacles are protected by an AC circuit protector that trips if the generator is overloaded or an external short circuit occurs. | Disconnect all electrical loads and find the cause before using the generator again. If overloading caused the trip, reduce the load. Reset by pressing the button on the protector. Continuous tripping may damage the generator or equipment. | 9 |
| Output Ready | Stays on during normal operation. Turns off when the generator is overloaded. | — | 9 |
| AC Reset | The inverter has entered a protective state and AC output is interrupted. | Press the AC Reset Button to restore the output. | 12 |
6 of 13 codes. From the Firman manual. All 13 WH03242 / T09371 / H07553 / W03083 codes →
FAQ
How long does the Firman H03655 run on a tank?
The maker rates it at 14 hours at 50 % load (about 1,825 W) on a 5.0-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the Firman H03655 start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 4550 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.