Customer called due to air conditioning stopped working. Upon inspection I found no low-voltage at the contactor yet the furnace was moving air through the house at room temperature. It showed me that it was either an issue with condensate, thermostat or wiring for low voltage. Found a wire nut connection at the condenser that had oversized wire nuts used that are not meant for 18 gauge wire. Replace them with smaller wire nuts, reconnected the wires and insulated it from the elements. Tested system when completed. System is operating properly at this time.