Upstairs is heat pump for both heating and cooling.
Basement and first floor are heated by oil furnace, and cooled with air conditioner.
The basement/first floor A/C compressor is running, but the blower motor is not running, and I noticed ice buildup and liquid condensate on the coil just outside the air handler in the basement.
Last winter, the oil company that maintains my furnace replaced the controller which they said is used for both heating and cooling, so I thought I'd call them first in the morning, in case it's the controller and it's covered under warranty.
I'd rather call a HVAC company that doesn't specialize in oil furnaces if the problem is probably not the controller.
I posted in alt.home.repair and have been suggested it could be I'm low on refrigerant/leak (based on the ice on the coil), or since the blower is not working, it could be the controller, a bearing or the motor.
What do the wise folks of alt.hvac think?