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H20

Error H20 — Pump error

Panasonic · Aquarea Heat Pumps

What does H20 mean?

There is an issue with the system's pump. This could affect water circulation.

Common Causes

  • The pump has failed.
  • Electrical issue with the pump.
  • Blockage in the pump or connected pipes.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check that the unit has power and try restarting it.

  2. 2

    Listen for any unusual noises from the pump area.

  3. 3

    Inspect accessible pipes for obvious blockages.

  4. 4

    Contact your installer to inspect the pump and its connections.

Browse all codes in this manual (69)
Verified technical data. Last updated: April 2026

Related Faults

2 beeps then pause2 beeps then pause - Overfill warning3 red flashes3 red flashes - Communication errorError Code DisplayError Code Display - Abnormality detected
Source: Panasonic Aquarea Heat Pumps
Open Manual (Page 19)Search more codes in this manual