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F20

F20 error - Compressor overheating (UD models)

Panasonic · Air Conditioning

What does F20 mean?

The compressor's internal temperature has exceeded the safety limit. The compressor will stop to prevent damage.

Common Causes

  • Compressor overheating
  • Poor ventilation
  • Refrigerant issues

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the outdoor unit has adequate ventilation and is not obstructed.

  2. 2

    Check that the ambient temperature is within the operating range.

  3. 3

    Allow the unit to cool down before restarting.

  4. 4

    Contact an authorized dealer if overheating continues.

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

Related Faults

Error code on Timer display LCDError code on Timer display LCD - Specific fault identifiedF12F12 - Pressure switch activateF14F14 - Outdoor compressor abnormal revolution
Source: Panasonic Air Conditioning
Open Manual (Page 143)Search more codes in this manual