CodeRegistry
Brands
  1. Home
  2. Daikin
  3. ASHP Error Codes
  4. AH-00
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

AH-00

AH-00 — Tank disinfection function not completed correctly

Daikin · ASHP Error Codes

What does AH-00 mean?

The scheduled disinfection cycle for the hot water tank did not finish as expected.

Common Causes

  • Insufficient time allocated for disinfection
  • Temperature not reaching required level
  • System interruption during cycle

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the disinfection cycle settings in the app or control panel.

  2. 2

    Ensure the unit has sufficient operating time to complete the cycle.

  3. 3

    Verify hot water tank temperature settings.

  4. 4

    Consult the manual or contact support for troubleshooting the disinfection function.

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 2)Search more codes in this manual