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F22

F22 - IPM (power transistor) overheating protection

Panasonic · Aquarea Heat Pumps

What does F22 mean?

The IPM (Intelligent Power Module) has overheated. This has occurred 3 times within 30 minutes. The OFF/ON LED will blink.

Common Causes

  • Improper heat exchange
  • IPM (Power transistor) fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure proper airflow and heat exchange within the unit.

  2. 2

    Check the IPM for signs of overheating or damage.

  3. 3

    Contact a qualified installer or service technician for diagnosis and replacement of the IPM.

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