A-iPower AP3700i
3200 W, gasoline
Generator. Specs from the manufacturer page (checked ).

The Firman L03391 is a propane-fueled inverter generator with 3300 running watts and 4100 starting watts, powered by a 208cc LPG engine. It has a 3-year warranty and weighs 57.15 kg (126 lb).
| Running watts | 3300 W |
|---|---|
| Peak / surge | 4100 W |
| Fuel | propane |
| Noise | 67 dB |
| AC output voltage | 120V |
| Weight | 57.15 kg (126.0 lb) |
| Warranty | 3 years |
From the Firman page. Values the manufacturer does not publish are left out.
Follow the diagrams in the Firman manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
We found no error-code table in this manual. Its troubleshooting section is the reference.
Starting surge matters more than running watts: this unit is rated 4100 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.