Factorio Forums

Posted: **Sat Jul 04, 2026 10:42 pm**

I built a new nuclear reactor and after some wiring setup, the reactor outputs an additional 1 fuel than what's inside. If empty, it outputs 1. If 1 is in, it outputs 2.

These are the steps I did before:

Built Reactor
Inserter put in 6 fuel
Added circuit to restrict fuel
Told bots to remove all fuel from reactor
Noticed issue

Not sure if the bots removing the fuel caused a problem. Save is attached

: Discord_GtweR3zYZ8.png (108.27 KiB) Viewed 183 times

: Discord_rfHXmsPZRc.png (92.43 KiB) Viewed 183 times

: Discord_DvX4Fa7k3r.png (167.55 KiB) Viewed 183 times

Posted: **Sat Jul 04, 2026 11:04 pm**

You get 2 because 1 fuel cell is currently burning and 1 fuel cell is in the input slot.

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[2.1.9] Nuclear reactor sends wrong fuel signal

[2.1.9] Nuclear reactor sends wrong fuel signal

Re: [2.1.9] Nuclear reactor sends wrong fuel signal