Small Engine Troubleshooting Problems? Ask a Mechanic Now.
When running in test mode, the genset will not transfer power to the house.
If you are wanting it to transfer during the exercise time, you will need to manually transfer it.
As far as the code 1603, this really needs to be checked by an authorized Generac technician, as the unit is still under warranty.
If you open this unit up, you will void your warranty, and you will be responsible for the cost of any parts needed.
If you need help finding an authorized technician, let me know your ZIP code.