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3 red flashes

3 red flashes - Communication error

Panasonic · Aquarea Heat Pumps

What does 3 red flashes mean?

This indicates a communication error between components. The system may not operate correctly.

Common Causes

  • Loose or damaged communication cables
  • Faulty communication modules

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check all communication cable connections.

  2. 2

    Inspect cables for any visible damage.

  3. 3

    Restart the system.

  4. 4

    Contact support if the flashing continues.

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

Related Faults

2 beeps then pause2 beeps then pause - Overfill warningError Code DisplayError Code Display - Abnormality detectedF12F12 - Pressure switch activation
Source: Panasonic Aquarea Heat Pumps
Open Manual (Page 76)Search more codes in this manual