"fritz" from "frig"?

[Joel S. Berson]

A colleague on another list just wrote

"Have you tried taping the paper to the 
refrigerator? Your animals probably aren’t up to climbing the frig.

I don’t have animals, and I quite often tape to 
the frig­just so they won’t get lost on my desk."

1)  I wonder how she pronounces it.

2)  If she says "fridg", might this cold source, 
rather than "friz" = "frozen", be the origin of 
"fritz" = 'not working"?  [Not really suggested seriously.]

JSB

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