Ductless Split AC Systems

To clean your washable indoor unit filters, turn off your unit, open the front panel, and carefully remove the plastic mesh filters. Then, gently rinse the dust and grime off with warm water. If need be, use a mild detergent to remove any remaining grime. Once clean, leave them out to air dry before placing them back in the units. This process should be repeated monthly or whenever excess buildup occurs.

There are a few reasons for this issue, including:

• Refrigerant leak
• Thermostat error
• Dirty filters
• Icy condenser coils

The only way to definitively diagnose the problem is via in-person assessment. Contact your local Aire Serv to schedule service.

Low refrigerant levels are often to blame for a mini-split icing up. This is because refrigerant helps absorb heat. So, if the refrigerant is low in your mini split, the unit will have to work harder to create cool air, creating excessive cooling that may cause it to ice up.

Another reason your mini-split may ice up is due to dirty condenser coils. If these coils are dirty, your unit will be unable to work efficiently and end up overworking and overcooling again.

Common repair issues that require professional service include:

• Electrical connection errors
• Faulty or broken thermostat
• Water or refrigerant leaks
• Short-cycling
• Frozen coils
• Clogged drain lines
• Faulty or broken fan

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