Daikin Mini-split U0 Error Code — Meaning & Repair Cost (2026)
Shortage of refrigerant amount / EEV failure. Below: the most likely causes, and what the matching repair costs — Estimated national ranges with a metro localizer. Reviewed July 2026.
What U0 means
Shortage of refrigerant amount / EEV failure.
Likely causes, most common first
- Refrigerant leak
- Undercharge at install
- Failed EEV
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Code meaning & causes · Reviewed July 2026
What it usually costs to fix Estimated
U0 on a Daikin mini-split resolves to the ductless mini-split refrigerant leak repair / recharge problem. Daikin parts typically run ×1.1 against the mainstream baseline (Global mini-split OEM competing at the premium tier but positioned as the value option of the two dominant Japanese ductless brands: a contractor pricing guide shows a comparable 12,000 BTU system quoting $300-$800 (and separately, $500-$1,000) cheaper installed than an equivalent Mitsubishi Electric system for the same install labor — mid-premium, below Mitsubishi.), and the ranges below already include it.
$105–$2,690 national estimate to fix the fault behind U0 (Daikin parts ×1.1). Enter a ZIP to localize.
| Most common repair | Typical total | DIY? |
|---|---|---|
| Refrigerant recharge only (top-off, no repairable leak point found) | $105–$365 | Pro recommended |
| Leak search + flare/line-set repair + recharge | $315–$1,040 | Pro recommended |
| Evaporator or condenser coil replacement (non-repairable leak) | $1,890–$2,690 | Pro recommended |
Plus a typical service-call / diagnostic fee of $75–$150, often credited toward the repair.
Pick a quality tier for a class-typical estimate, or a specific brand to override it (brand adjusts the parts portion only). Enter a ZIP or Canadian postal code to localize to your metro's labor costs. Everything updates without a page reload; no data leaves your browser except the shard lookup.
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · National base range (BLS OEWS May 2025 + BEA RPP 2024) · Reviewed July 2026 · Estimated
Codes are universal — your location changes the repair price, never the code's meaning. See the methodology for the exact localization formula and sources.
Reviewed by a Red Seal–certified appliance technician who also holds a Technical Safety BC gas ticket (Gas-C) and an ODS/halocarbon refrigerant ticket (CFC/HCFC/HFC).