Firman Zero E (E201001) code 03
What it means: Over-current or short circuit on the USB-C (99W) port used for input and output.
What to do
Check whether the output port is overloaded or short-circuited.
When to call service
The manual lists steps the owner can take. If the code comes back after them, or you are unsure, contact an authorized service dealer. A warning: the unit may keep running, but the cause needs attention.
Source: official Firman manual, page 21, read . Summary of the manual, not a reproduction.
Models this manual covers
Other Zero E (E201001) codes
Questions
What does Firman code 03 mean?
Over-current or short circuit on the USB-C (99W) port used for input and output. (Firman manual for the Zero E (E201001), page 21.)
How do I fix Firman code 03?
Check whether the output port is overloaded or short-circuited.
Fuel, gas and electrical work on a power station is for qualified technicians; follow the safety section of the manual. All 18 Zero E (E201001) codes →