If the coolant level is too low the A/C will not turn on.
The ac pump may be seized up.
turn on the ac and open the door or window
You can turn the temperature of the AC up but if you turn the fan part of the AC up "high" or "low" it will only make it colder.
why does my ford focus over heat when i turn the ac on
most likely it is out of freon
The Auto button will turn on the AC then set your desired temperature.
For residential equipment it is 24 volts
No power.
turn the car on
First place to look is the thermostat
why dose all the antifreeze leak out when you turn on the ac from your 2000 honda accored
Most of the time it means that the AC refrigerant has leaked out or that the AC doesn't work for some reason. Understand that most vehicles engage the AC when the defroster is on because the AC will dry the air, clearing the windshield quicker. If you turn on the Defroster and the AC light flashes, it just means that the AC won't turn on.