CodeRegistry
Brands
  1. Home
  2. Daikin
  3. ASHP Error Codes
  4. 8H-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.

8H-00

8H-00 — Abnormal increase outlet water temperature

Daikin · ASHP Error Codes

What does 8H-00 mean?

The temperature of the water leaving the unit is higher than expected.

Common Causes

  • Thermostat malfunction
  • Overheating within the system
  • Faulty water flow sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the thermostat settings for the unit.

  2. 2

    Ensure there is adequate water flow.

  3. 3

    Monitor the unit for signs of overheating.

  4. 4

    If the problem continues, consult a professional.

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