If you’re running your ductless mini-split but your home still feels uncomfortable, the system is probably experiencing one of many common issues. These issues can include restricted airflow, incorrect settings, or low refrigerant. Understanding a little more about what could go wrong with your system will help you determine what the problem is.

Restricted Airflow

Restricted airflow is the most common cause of a ductless mini-split not cooling properly. Clogged filters lead to poor performance. This is because a buildup of dust will suffocate your system. It prevents the mini-split from drawing in warm air and pushing out cooled air.

Your outdoor condenser coils may also be blocked. You need a minimum of 18 to 24 inches of clearance around the condenser. When overgrown shrubs, leaves, or dirt collect around it, the condenser can overheat and quit cooling.

Dirty coils also affect heat transfer. If your indoor evaporator and outdoor condenser coils are covered in dust and grime, they won’t work effectively.

Refrigerant Problems

Your ductless mini-split should never run out of refrigerant. It’s a sealed system. Low refrigerant typically indicates a leak. Without adequate refrigerant, the system can’t cool your home. Watch for ice and frost on your indoor air handler’s metal fins. Listen for unusual hissing and bubbling noises too.

Settings and Controls

Check to make sure your ductless mini-split is set to “cool” mode. If it’s set on “dry” or “fan,” the system will run, but it won’t cool. It won’t be able to engage the compressor.

Check your thermostat too. Your ductless mini-split will stop cooling if it thinks it’s already reached your desired temperature. Make sure you have the thermostat set to at least 5 degrees below your current room temperature.

You may be experiencing remote issues. If your remote has dead batteries or the sensor malfunctions, it can keep the system from receiving your commands.

Technical Issues

A clogged drain line can cause your system to shut down. It does this to prevent water damage.

Electrical issues also keep the system from cooling. A faulty capacitor or a tripped breaker will keep your outdoor compressor from starting. As the main component of your ductless mini-split, a failing compressor will stop the system from cooling.

Whenever your ductless mini-split stops cooling, you should contact a professional HVAC contractor. They can inspect your system, accurately diagnose the issue, and provide you with reliable and long-lasting solutions. Call ACE ABQ for all of your ductless mini-split needs in Albuquerque, NM.