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H68

Error H68 — External thermistor 2 error

Panasonic · Aquarea Heat Pumps

What does H68 mean?

The second external temperature sensor (thermistor) is reporting an error.

Common Causes

  • Faulty second external thermistor.
  • Wiring problem with the thermistor.
  • Thermistor is installed incorrectly.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the second external thermistor for any physical damage or obstructions.

  2. 2

    Try restarting the system.

  3. 3

    Ensure the thermistor is properly positioned.

  4. 4

    Call your installer to inspect and service the thermistor.

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 19)Search more codes in this manual