Ductless systems fail differently than central AC. You need a technician who specializes in mini-split diagnostics — not one who treats every unit the same. Same-day service across King, Pierce & Snohomish Counties.
Mini-Split Diagnostic
Mini-splits have unique failure points.
We specialize in all ductless brands — Mitsubishi, Daikin, Fujitsu, LG, and more.
Ductless systems communicate problems differently. Here's what those symptoms really mean.
Not sure what's wrong? Book a diagnostic — we'll tell you exactly what's happening.
Ductless systems have their own set of failure points. We've seen and fixed every one.
Blinking LED patterns indicate specific faults. We decode all brands — Mitsubishi, Daikin, Fujitsu, LG.
Clogged condensate drain, cracked drain pan, or improper pitch on the indoor head.
Failed capacitor, locked rotor, or inverter board failure preventing the outdoor unit from running.
Restricted airflow from dirty filters, low refrigerant charge, or a failing fan motor.
Dead batteries, faulty IR receiver on the indoor unit, or a control board communication issue.
Mold or bacteria buildup on the evaporator coil or blower wheel. Common in humid conditions.
Indoor blower or outdoor fan motor seized, noisy, or running at the wrong speed.
Refrigerant leak in the line set, dirty outdoor coil, or a failed thermistor giving bad readings.
"Our Mitsubishi wall unit was flashing an error code and leaking water. Next Phase diagnosed a clogged drain and a bad sensor in one visit. Fixed on the spot."
"Our Daikin mini-split wouldn't cool the bedroom at all. Turned out it was a refrigerant leak at the flare fitting. They sealed it, recharged it, and it's been perfect."
"The remote stopped working on our Fujitsu. Another company said replace the whole head. Next Phase replaced the IR receiver board and it works like new."
"Three-zone LG system and only one zone was working. They traced it to a bad PCB board in the outdoor unit. Had to order the part but came back next day to install. Very fair pricing."
"Awful smell from our mini-split every time it turned on. They pulled the unit apart, deep-cleaned the coil and blower wheel. Smells completely fresh now."
"Our Mitsubishi wall unit was flashing an error code and leaking water. Next Phase diagnosed a clogged drain and a bad sensor in one visit. Fixed on the spot."
"Our Daikin mini-split wouldn't cool the bedroom at all. Turned out it was a refrigerant leak at the flare fitting. They sealed it, recharged it, and it's been perfect."
Yes. We service Mitsubishi, Daikin, Fujitsu, LG, Samsung, Carrier, and every other ductless brand — regardless of age or who installed it. Our technicians carry brand-specific diagnostic tools.
Each brand uses different LED blink patterns to indicate specific faults — compressor issues, sensor failures, communication errors, and more. We can decode the pattern during a diagnostic and tell you exactly what's wrong.
The most common cause is a clogged condensate drain line. It can also be a cracked drain pan, improper installation angle, or ice melting off a dirty coil. We diagnose the exact cause and fix it so the leak doesn't return.
Absolutely. Multi-zone systems have independent indoor heads that can fail individually. We'll diagnose which head or line set has the issue and repair just that zone — no need to replace the entire system.
It depends on the fault. After diagnosing the issue, we provide exact pricing before any repair work begins. If you decline, you only pay the diagnostic fee. No surprises, no hidden charges.
Small mini-split problems become expensive ones. Book a diagnostic today and get the real answer — with upfront pricing before any work begins.
Same-day service · All ductless brands · Upfront pricing · Repair guaranteed