Check the remote and mode
Confirm the remote has batteries and is set to the right mode and temperature.
Mini-split not cooling, not heating or showing an error?
Ductless mini-splits have an outdoor unit and one or more wall units. When one stops, a room or the whole space loses heating or cooling. Check the remote and breaker, note any error code, then call 833-877-1717. RepairNowUSA connects the request. An independent HVAC technician does the repair.
Am I in the right place?Yes for a mini-split that will not cool or heat, blinks an error light, leaks water from the wall unit, or makes new noises.
Is this urgent?Yes in extreme heat or cold, or if it is the only source of heating or cooling.
What do I do next?Write down any error code, then call 833-877-1717.
Central heat pump instead: heat pump repair.
RepairNowUSA editorial review · Last substantively reviewed October 14, 2026 · Review standards
Quick checks
Clean the filters
Mini-split indoor units have washable filters behind the front panel. Dirty filters reduce airflow and capacity.
Note the error code
Write down the blinking light pattern or error code. It helps the technician diagnose the problem.
Leave the units sealed
Do not open the outdoor unit, touch the capacitor or wiring, or handle refrigerant. Capacitors hold a dangerous charge even with power off, and refrigerant work requires EPA certification.
Common mini-split problems
Not cooling or heating
Refrigerant leaks, failed outdoor unit parts or control board problems stop the system.
Blinking lights or error codes
Codes vary by brand and point to sensors, communication or outdoor unit faults.
Water leaking from the indoor unit
A clogged drain line or failed condensate pump causes leaks down the wall.
One head works, another does not
Multi-zone systems can lose one indoor unit from wiring, sensor or valve problems.
What to have ready when you call
- Property ZIP code and whether it is a home, rental or business
- Brand and model, if known
- Error code or blinking pattern
- Which indoor units are affected
- Whether there is water leaking
How mini-split repair usually works
- Read the codes. The technician interprets error codes for the brand.
- Check components. Sensors, boards, fans, the compressor and communication wiring are tested.
- Check refrigerant and drains. Leaks are found and drain lines or pumps are cleared.
- Repair. Failed parts are replaced, which may need ordering for some brands.
Parts for some mini-split brands are less common. Sharing the brand and model helps the provider plan.
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles ductless mini-split repair in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Mini-split questions
What does a blinking light on my mini-split mean?
It is usually an error code. The pattern varies by brand. Write it down and share it with the technician.
Why is my mini-split leaking water?
A clogged drain line, an improperly sloped line or a failed condensate pump are common causes.
How often should mini-split filters be cleaned?
Manufacturers commonly recommend checking them about monthly during heavy use.
Do providers work on ductless brands?
Many technicians service major ductless brands. Share the brand and model when you call.
Can I call at night?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.