Thank you for submitting this PR. I've reviewed the changes and have a few questions and observations:

1. Change from Middle to Medium

• In the current codebase, Middle is used as the fan mode, and it seems to work correctly. Could you clarify if this was not functioning on your side? Did the fan mode labeled as Middle not activate correctly?
• If this is primarily a naming change (from Middle to Medium), was this update necessary to resolve any functional issues, or is it aimed at standardizing terminology?

2. Compatibility with Existing Systems

• Considering other users might already be using Middle, this change could potentially break compatibility for them. How do you propose handling this for backward compatibility?
• Did you test this change with all supported AC models (NASA, Non-NASA, and Other) to ensure consistent functionality?

3. General Observations

• If this change is purely for naming consistency, it might be better to include both terms (Middle and Medium) for a transition period and document this in the release notes.
• Please provide additional details about the issue you faced that led to this change. For instance, were there any specific models where Middle failed to function?

Thank you for your work on this. I look forward to your feedback!