I was called to a home to perform furnace maintenance. Upon arrival, I noticed that the furnace was not producing heat. I checked the thermostat and found that the temperature was set to 60 degrees, but the furnace was not turning on. I checked the power supply and found that the furnace was receiving power. I checked the blower and found that the blower motor was not turning. I checked the blower capacitor and found that it was blown. I replaced the blower capacitor and the furnace started working again.