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H5-00

H5-00 — Malfunction of compressor overload protection

Daikin · ASHP Error Codes

What does H5-00 mean?

The compressor's overload protection has been triggered, indicating it's drawing too much current or is overheating.

Common Causes

  • Low refrigerant charge
  • Dirty condenser coil
  • Internal compressor fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the outdoor unit's condenser is clean and has good airflow.

  2. 2

    Check for any signs of refrigerant leaks.

  3. 3

    Allow the compressor to cool down before attempting a restart.

  4. 4

    Contact a service technician for diagnosis.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

7H-017H-01 — Water flow problem7H-047H-04 — Water flow problem during domestic hot water production7H-057H-05 — Water flow problem during heating/sampling
Source: Daikin ASHP Error Codes
Open Manual (Page 3)Search more codes in this manual