Upon arrival, system is in off mode. Turned into cooling mode for testing. Inspection of furnace is good. Thermostat is operating properly, and furnace is operating properly. Inspection of outdoor unit showed that the contactor was not operating. Found low pressure switch to not be closed. Checked refrigerant pressures and found that pressures are at 12psi. There is suspected to be a large leak, also known as a blowout due to the charge being lost within a few months. Leak is most likely in the ac outside, or the coil inside, but location is unknown until found. Three options can be explored. Option one is a leak search to attempt to find and repair the leak. Option two is leak stop, similar to fix a flat for a car tire, that would attempt to stop the leak internally. Option three would be system replacement.
