The AC tech just left and the AC is now permanently set to 78. I have the hottest room in the house and cannot sleep in the heat. How can I adjust the setting to where I can control it by the thermostat again? Thank you!
I'm not calling him back. Can't afford it.

Moved from Electrical to HVAC.

Why on earth did you allow the tech to fix the setting at 78 Deg?

The landlord TOLD him to put it there...