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Appreciation post: the door operator switch from relays to VVVF boards on our old Otis units
Went back to a 1987 Otis job in Denver last week that we converted to VVVF boards 6 months ago, and the door reversal callbacks dropped from like 3 a week to zero, so I'm wondering if anyone else has seen the same thing or if we just got lucky on that one.
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