Error 440 — Heating mode restriction due to high air temperature

Was bedeutet 440 ?

Heating mode operation is restricted because the ambient air temperature is too high. The system prevents heating to avoid issues in such conditions.

• Ambient air temperature is excessively high
• Faulty outdoor air temperature sensor
• System safety protocol active

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check the ambient air temperature readings.

2. 2

   Ensure the outdoor air temperature sensor is clean and correctly positioned.

3. 3

   Wait for the ambient temperature to decrease before attempting to operate in heating mode.

4. 4

   If the temperature readings seem incorrect, the sensor may need calibration or replacement.