Lennox air conditioning repair. Old R-22 Freon unit. The outdoor unit was not running, but it had 220 volts of power to the unit, no 24 volts at the contactor. I went inside, set the thermostat down. I went down to the basement and found the bottom blower door not all the way closed. This door has a switch that kills power to to furnace board when the door is not completely closed. I reinstalled the door, and the blower started on the furnace. I can hear Freon moving in the line set. I checked the gauges, and the high and low pressures look good at this time. I washed the outside unit. Everything is operating as it should and cooling now.