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7H-01

7H-01 — Water flow problem

Daikin · ASHP Error Codes

What does 7H-01 mean?

Indicates an issue with the water flow within the system. This could affect heating or cooling performance.

Common Causes

  • Blocked water lines
  • Low water pressure
  • Faulty water pump

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check water pressure gauge.

  2. 2

    Ensure all water valves are open.

  3. 3

    Inspect for any visible leaks.

  4. 4

    Contact a qualified installer if the problem persists.

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

Related Faults

7H-047H-04 — Water flow problem during domestic hot water production7H-057H-05 — Water flow problem during heating/sampling7H-067H-06 — Water flow problem during cooling/defrost
Source: Daikin ASHP Error Codes
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