Generac iQ5200
3900 W, dual-fuel
Firman WH03562OF
Generator · Legendary Firman Engineering. Specs from the manufacturer page (checked ).
The Firman WH03562OF is a dual-fuel inverter generator with 3500 W running watts on gas and 3200 W on LPG. It has a 208cc engine, 4400 W starting watts on gas (4000 W on LPG), and 120-volt output.
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Running
3500W
Peak / surge
4400W
Fuel
dual-fuel
Weight
54kg
Warranty
3yr
Key features
- 208cc max pro series engine with recoil start and electric start
- Running watts 3500W on gas or 3200W on LPG; starting watts 4400W on gas or 4000W on LPG
- 6-gallon tank with up to 22 hours of run time at 25% load
- Low oil shutoff and CO alert technology
- Covered outlets: 5-20R 120V 20A duplex, L5-30R 120V 30A twistlock (29.2A/120V/3500W), and 14-50R 120V/240V 50A (29.2A/120V/3500W)
- USB-A port (2.1A/5V DC/10W) and 12V DC power port (8.3A/12V DC/100W)
- 3-year warranty
Specifications
| Running watts | 3500 W |
|---|---|
| Peak / surge | 4400 W |
| Fuel | dual-fuel |
| Tank | 22.7 L (6.0 gal) |
| AC output voltage | 120 volts |
| Weight | 54 kg (119.0 lb) |
| Warranty | 3 years |
From the Firman page. Values the manufacturer does not publish are left out.
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Firman WH03562OF comparisons
- WH03562OF vs Generac iQ5200
- WH03562OF vs WEN GN5602X
- WH03562OF vs WEN DF480iX
- WH03562OF vs WEN DF475T
- WH03562OF 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 3 →
- Wiring diagram, manual page 40 →
- Wiring diagram, manual page 41 →
- Wiring diagram, manual page 42 →
- Wiring diagram, manual page 43 →
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
Can the Firman WH03562OF start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 4400 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.