Sensor fault from heat pump 277 — Compressor is blocked: Evaporator sensor fault

Was bedeutet 277 ?

The evaporator sensor (Tho-R) has received an unreasonably high or low value 3 times within 40 minutes. This indicates a sensor issue.

• Open circuit or short circuit on sensor input
• Defective sensor

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check the evaporator sensor (Tho-R) for damage.

2. 2

   Ensure the sensor is properly connected.

3. 3

   Test the sensor's resistance and signal.

4. 4

   Replace the sensor if defective.