Arrived on site for a non-working AC unit. Upon arrival was led to the basement where the air handlers located, air handler was not on but it was calling for cooling. Went to the basement and took off the panels to inspect the wiring, all wiring it's nice and tight. Check the breaker in case if it was tripped, no Breakers were tripped. Looked at the emergency switch on the unit and the unit was switched off. After switching the unit back on unit was operating normally.
