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H76

H76 - Indoor control panel communication abnormality

Panasonic · Aquarea Heat Pumps

What does H76 mean?

There is a communication issue between the indoor unit and its control panel. The system may stop operation.

Common Causes

  • Indoor unit to control panel cable is defective or disconnected
  • Indoor or control panel PCB fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the cable connecting the indoor unit and control panel is secure.

  2. 2

    Check the cable for any visible damage.

  3. 3

    Inspect the PCBs on both the indoor unit and control panel for issues.

  4. 4

    Contact a qualified installer or service technician for diagnosis.

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 76)Search more codes in this manual