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F25

F25 — Cooling/Heating cycle changeover abnormality

Panasonic · Air Conditioning

What does F25 mean?

This code appears when there's an abnormality in switching between cooling and heating cycles. It is reported after 4 occurrences within 30 minutes.

Common Causes

  • 4-way valve fault
  • V-coil fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the 4-way valve.

  2. 2

    Check the V-coil.

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