Air not working

The first thing to check is incoming 120VAC power to the unit. This voltage must be 115Volts domestic USA with no less than -10% allowable. If your voltage is below this point, the unit will not work. If your voltage is ok, check the thermostat or selector switch. Make sure that the thermostat (if wall mounted) has 12VDC running to it. If it does not, fix that problem first. If it is manual control, check the selector switch for ok. You should have incoming 120VAC power to the switch and when the High/Cool is selected, check the following.

Terminals LI and C, and L1 and 1 should have continuity. If not, replace selector switch.

Hope this helps,

Jeff