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H0

H0 — Sensor fault detected

Daikin · Air Conditioner

What does H0 mean?

This is a general sensor fault code. It indicates that one or more sensors within the system are not functioning correctly.

Common Causes

  • Malfunctioning sensor
  • Loose or damaged sensor wiring

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check all visible sensor wiring for secure connections and damage.

  2. 2

    Ensure sensors are clean and not obstructed.

  3. 3

    A technician will need to identify the specific faulty sensor and repair or replace it.

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

0000 — Normal operationA1A1 — Indoor unit PCB defect detectedA5A5 — High pressure or freeze-up protector activated
Source: Daikin Air Conditioner
Open Manual (Page 31)Search more codes in this manual