Describe the bug
First off, the tooltip info seems to depend on the client-side config, which is odd and seems unintended. I've enabled heater_furnace_engine_enable both on client and server, but hooking up the induction heater still doesn't turn it on. I have a fully charged accumulator with nothing else connected.

I would make a PR, but I have no idea how the internals of configs work in MC... I'd be willing to help though.

To Reproduce
Set up like this:

Additional context

• Mod version: 1.18.1-20220111b
• Forge version: 1.18.1-39.0.9
• Create version: 1.18.1_v0.4c

The config thing is a known issue, however, have bothered to fix it yet (its quite a big fix) :/
By default, the heater won't work on furnaces connected to a Furnace Engine, this is because it could potentially cause an infinite energy loop when using it and an Alternator. It can be re-enabled in the configs.

I'm aware of the implications, and will make sure it's not generating more energy than it's consuming through config. But I have set heater_furnace_engine_enable to true on both client and server, so should that not make it work? Or is there another config flag I'm missing?

I've forked the repo and will be debugging a bit with a local build, I'll see what I can find.

Okay, I see the problem now.

The heater only connects to classes that extend AbstractFurnaceBlockEntity, and I had placed a Furnace Burner which extends AbstractBurnerBlockEntity. It worked somewhat fine once I replaced it with a regular furnace, although it wasn't really functioning well due to the default consumption/input ratio, but that's configurable.

I'm looking at the possibility of including burner blocks (furnace and crude) for the heater, but before I continue and make a PR - is this something you'd even want? It seems like it's a somewhat smooth transition by adding dataAccess like in AbstractFurnaceBlockEntity and some light casting and type checking.

That's right, I forgot. I had to redo the burners in 1.17+. Don't make a PR yet, I'll have to think about how I want that to work, or if I should deprecate that config option altogether. Thanks for finding this.

No worries man, if there's anything I can do to help, feel free to hit me up :)

Fixed in 20220419a/20220420a