The coil on line #11 does not control which component?

• A. The condenser fan motor
• B. The compressor
• C. The blower motor
• D. The humidistat

Answer: (C)

The coil on line #11 is the outdoor condenser contactor coil. When the thermostat calls for cooling, this coil is energized and the contactor closes, supplying power to the outdoor components: the compressor and the condenser fan motor. Those outdoor parts are powered by this same coil. The indoor blower motor, on the other hand, is controlled by the indoor blower relay in the furnace/air handler, not by the outdoor contactor coil. The humidistat operates in the humidity control path, which is separate from the outdoor coil circuit. So the component not controlled by the coil on line #11 is the blower motor.