The main differences between the CH version and the EU version of the Philips Series 2200 coffee machine are mainly in the regional customisation and possible power supply requirements. Here are some of the main differences:

- Power supply: The CH version might have specific adaptations for Swiss power grids, while the EU version is adapted to European standards.
- Country-specific functions: There could be country-specific functions or settings that relate to regional use.
- Certifications and safety standards: The devices could fulfil different certifications or safety standards that are relevant for the respective region.

Price differences are also possible, depending on local taxes and distribution costs.