Here's why:
* Compressor Running: The compressor is the part of the AC unit that cools the refrigerant. It's independent of the blower motor in the furnace. It will turn on based on the thermostat's call for cooling.
* Fan Motor Not Running: The blower motor is located in the furnace and is responsible for circulating cooled air throughout your home. It's controlled by the air conditioner's control board.
* Gurgling Sound: This is almost certainly water accumulating in the condensate drain pan within the furnace. Air conditioners produce condensation as they cool the air. This water usually drains out through a drain line. If the line is clogged, the pan fills up, and the gurgling is the sound of water sloshing around and potentially even overflowing.
Why the lack of fan operation? Many air conditioners have safety features that prevent the blower motor from running if there's a problem with the condensate drain. A full or clogged drain pan is a common cause for this safety shutdown to prevent water damage to the furnace.
What to do:
1. Check the condensate drain line: Locate the drain line exiting the furnace (often a PVC pipe). Check for clogs. You may need to use a wet/dry vacuum or a plumbing snake to clear it.
2. Check the condensate drain pan: If you can safely access the drain pan within the furnace, check to see if it's full of water. Empty it carefully.
3. Inspect for leaks: Ensure there are no leaks in the drain line causing water to build up in the furnace.
4. Reset the system: After clearing the drain, try resetting your air conditioner's breaker or fuse. Sometimes the safety feature will need to be reset.
5. Call a professional: If you're uncomfortable working with your HVAC system or if the problem persists after checking the drain, it's best to call a qualified HVAC technician. There could be a more serious issue with the control board or other components. Ignoring a clogged drain can lead to significant damage to your furnace.
