The Hypertext Transfer Protocol Status Code 483 (I'm Not a Freezer)

This is an anti-pattern. A better, future-proof solution would be to extend HTTP 418 with a header stating just what the server is not:

    HTTP 418 I'm A Teapot
    I'm-Not-A: freezer;teapot;radio

When the main compression algorithm the device supports is making the data have a temperature of 4 degrees Celsius.

Couldn't he submit it on april 1st?