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7H-05

7H-05 — Water flow problem during heating/sampling

Daikin · ASHP Error Codes

What does 7H-05 mean?

A water flow problem is occurring while the unit is in heating mode or performing a sampling operation.

Common Causes

  • Air in the heating system
  • Malfunctioning zone valves
  • Heating pump not operating correctly

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Bleed air from the heating system radiators.

  2. 2

    Ensure heating system valves are in the correct position.

  3. 3

    Check if the heating circulation pump is operational.

  4. 4

    Consult the installation manual or a technician.

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-067H-06 — Water flow problem during cooling/defrost
Source: Daikin ASHP Error Codes
Open Manual (Page 1)Search more codes in this manual