Short answer: no — and this applies to the boiler as well as the controller.
The 110V and 220V G30 systems aren't interchangeable at any component level. This isn't just about the controller — it applies to the boiler body as well.
You cannot mix and match:
- A 220V controller cannot be used with a 110V boiler.
- A 110V controller cannot be used with a 220V boiler.
Both the controller and the boiler are built for one specific voltage, and they're designed to be used together as a matched pair — not swapped individually.
Why this matters: it comes down to the heating element and connectors
The 110V G30 model draws 1600 watts of power. That's because its heating element is specifically designed to operate at 110 volts with a 1600-watt rating. The electrical specification of the heating element directly determines how much power the whole system draws — and this is reflected right through to the physical connectors:
- The boiler's heat plug differs between voltages (different connector types depending on version and voltage).
- The controller's heat socket is built to match only its corresponding boiler voltage.
- Even where connectors look visually similar, they are wired for different voltages — mixing them isn't just a bad idea; it can be a genuine safety hazard.
Bottom line
If you need to switch between 110V and 220V setups (for example, moving between regions), you'll need the full matching pair — the correct controller and the correct boiler for that voltage. A voltage mismatch between controller and boiler isn't a simple compatibility issue; it's a mismatch that shouldn't be attempted, regardless of how similar the plugs might look.