Ductless fails differently than central AC. We specialize in mini-split diagnostics. Same-day across King, Pierce & Snohomish.
Mini-Split Diagnostic
Mini-splits have unique failure points.
Mitsubishi, Daikin, Fujitsu, LG, and more.
Mini-splits show problems differently. Here's what symptoms really mean.
Not sure what's wrong? Book a diagnostic — we'll tell you exactly what's happening.
Ductless has unique failure points. We've fixed every one.
Blinking LEDs indicate specific faults. We decode every brand.
Clogged drain, cracked pan, or wrong pitch on the indoor head.
Failed capacitor, locked rotor, or bad inverter board.
Dirty filters, low charge, or a failing fan motor.
Dead batteries, bad IR receiver, or control board issue.
Mold on the coil or blower wheel. Common in humid climates.
Indoor or outdoor fan motor seized, noisy, or wrong speed.
Line set leak, dirty outdoor coil, or failed thermistor.
"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. Mitsubishi, Daikin, Fujitsu, LG, Samsung, Carrier, and more — any age, any installer. We carry brand-specific diagnostic tools.
Each brand uses different blink patterns for specific faults — compressor, sensor, communication errors. We decode it on the spot.
Usually a clogged drain line. Also could be a cracked pan, bad install angle, or ice from a dirty coil. We find the cause so it doesn't return.
Yes. Each indoor head fails independently. We pinpoint the bad zone and repair just that — no full system replacement.
Depends on the fault. Exact pricing before any work. Decline and you only pay the diagnostic fee.
Small problems become expensive ones. Book a diagnostic. Real answers, upfront pricing.
Same-day service · All ductless brands · Upfront pricing · Repair guaranteed