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H58

H58 — Indoor gas sensor abnormality and blinking LEDs

Panasonic · Air Conditioner Panasonic PRO Club

What does H58 mean?

The indoor gas sensor has been abnormal for 6 hours. The Timer LED and Patrol LED will blink, and the air conditioner will operate in normal mode with the Patrol sensor power turned off.

Common Causes

  • Indoor gas sensor open or short circuit
  • Indoor PCB issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the indoor gas sensor and its connection.

  2. 2

    Inspect the indoor PCB.

  3. 3

    Reset the power supply to cancel the error.

Browse all codes in this manual (31)
Verified technical data. Last updated: April 2026

Related Faults

2 beeps2 beeps - Confirmation of Forced heating operation start3 beeps3 beeps - Remote Control Number Switch Mode standby4 beeps4 beeps - Remote Control Receiving Sound Off/On Mode standby
Source: Air Conditioner Panasonic PRO Club
Open Manual (Page 66)Search more codes in this manual