AB 1400 reset

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Location
NE (9.06 miles @5.9 Degrees from Winged Horses)
Occupation
EC - retired
I have a customer with an AB 1400 I put in many years ago. I've had to reset it twice, I think, going on line with it. Power reset doesn't work.

Retired now and currently 11 hours away, I get the SOS call. My former employee and his new boss did a physical work around.

What is the bit number I could use to do the reset via its HMI?
IDK why I finally thought of it and maybe its not possible.
 
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