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F22

F22 — IPM (power transistor) overheating protection

Panasonic · Air Conditioning

What does F22 mean?

This indicates the power transistor (IPM) is overheating. This protection activates after 3 occurrences within 30 minutes.

Common Causes

  • Improper heat exchange
  • IPM (Power transistor) fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure proper heat exchange conditions.

  2. 2

    Inspect the IPM for faults.

Browse all codes in this manual (53)
Verified technical data. Last updated: April 2026

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Source: Panasonic Air Conditioning
Open Manual (Page 163)Search more codes in this manual