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H67

Error H67 — External thermistor 1 error

Panasonic · Aquarea Heat Pumps

What does H67 mean?

The first external temperature sensor (thermistor) is not working correctly.

Common Causes

  • Faulty external thermistor.
  • Damaged wiring to the thermistor.
  • Incorrect installation of the thermistor.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the external thermistor is not obstructed or damaged.

  2. 2

    Restart the system.

  3. 3

    Check the wiring connected to the thermistor.

  4. 4

    Contact your installer to test and potentially replace 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