7 Common Mini-Split Problems and How to Fix Them

July 12, 2021

Having mini-split installation done is a wise approach to solve comfort difficulties in your home. These systems don’t require ductwork to give energy-efficient heating and cooling. Similar to any other home comfort system, they can run into problems sometimes. Here are seven of the most frequent mini-split problems and how you can resolve them.

1. Mini-Split is Dripping Water or Not Draining Water

If your mini-split is dripping water or not draining water, there might be a problem with the condensate drain or drain line. It’s typical for a drain line to become clogged with mold, force water to back up and drip. Contact TopTec Heating, Cooling, Plumbing & Electrical at 847-362-0262 for support and we’ll get your drain unplugged rapidly.

2. Mini-Split is Making Noise

Mini-splits usually don’t generate much noise when they’re running. But there are two instances where they may make sounds.

  • Popping or clicking: This can be because of the plastic housing expanding or contracting while the system is operating.
  • Swooshing, crackling or gurgling: This can occur if your mini-split goes into defrost mode to keep itself from icing over.

You shouldn’t be worried if you hear these noises since they’re expected. However, if your mini-split keeps going into defrost mode, it’s a sign that something is wrong, like insufficient refrigerant, a faulty circuit board or defective sensors. Your TopTec Heating, Cooling, Plumbing & Electrical HVAC technician will be able to pinpoint and resolve the issue rapidly.

3. Mini-Split is Not Heating or Blowing Hot Air

If your mini-split is not heating or blowing hot air, frozen coils may be the issue. Like we mentioned previously, frozen coils could be the result of not enough refrigerant, a failing circuit board or defective sensors. Call us at 847-362-0262 for assistance.

4. Mini-Split is Not Cooling or Blowing Cold Air

If your mini-split is not cooling or blowing cold air, there may be a refrigerant leak. Your mini-split AC needs refrigerant to move heat and keep your home cool. These leaks must be repaired by a licensed HVAC pro, so contact us at 847-362-0262 for support.

5. Mini-Split is Not Dehumidifying

Like an air conditioner, a mini-split does a great job at dehumidifying during the summer. However, this could be stopped by mold in the condensate drain line. Another reason your mini-split air conditioner may not be dehumidifying very effectivelyis if it’s oversized. A system that’s too large will cool down a room too quickly without having a moment to dehumidify it. Mini-split size is planned on square footage and BTUs.

6. Mini-Split Smells

If your ductless mini-split smells, it’s trying to get your attention that something is wrong. Here are five of the most common smells and what they mean.

Musty, Sour or Mildew

If your mini-split smells musty, sour or like mildew, you might have a mold issue. Have a specialist like TopTec Heating, Cooling, Plumbing & Electrical examine and clean the condensate drain and drain line, if needed.

Vinegar

If your mini-split smells like vinegar or has a sweet odor, you’re likely experiencing a refrigerant leak. Another certain clue that you don’t have sufficient refrigerant is a lack of cold air. Call us at 847-362-0262 for support.

Fish

If your mini-split smells like fish, a few things could be wrong. In some situations this smell means there are electrical issues or that there’s a leak. Either way, reach us at 847-362-0262 for assistance.

7. Mini-Split Will Not Power On

If your mini-split will not power on, check the remote first. If the batteries are bad, your mini-split won’t turn on. In the majority of experiences, putting in fresh batteries will fix the situation. If you’re still experiencing trouble, reach us at 847-362-0262.

Rely on Us for Your Mini-Split Repair Needs

When you need mini-split repair or air conditioning repair in Libertyville, get in touch with the company your neighbors and friends have trusted since 1993. Quality repairs, fair prices and your comfort are our highest priorities! Reach us at 847-362-0262 to book your appointment today.