[911SC Pilot]

I know this isnt the right form, but Im hoping somebody on this form knows.

My moms house`s power went off on friday sometime. The Home AC unit was running when the power went off. With this unit, I guess when the power goes off, you have to go up on the roof and hit a reset button on the AC unit. How do I do this process. My father would do it, but never told myself, or my mom, how to reset it before he died last year. I know on the thermostat in the house has a reset position on the Cool/ Heat switch.Do I use that ? I tried to reset it yesterday, the compresser came on, but then shut off, only leaving the fan running. I really need help with the correct process of reseting the unit. DO I cut the power off to the house to reset it. Do I cut the power at the AC unit on the roof. Do I push the reset button when the unit is On ??? Its just going to be 119 in vegas for the next week, and I dont want my mom to get hurt from the heat in the house. Sorry Wayne for posting this here, I just felt I would get a better responce on this form, thanks.