Sensor flt:BT3 103 — Heating medium return sensor fault (continuous)

What does Sensor flt:BT3 103 mean?

This B alarm signifies a continuous problem with the heating medium return sensor. Causes include open/short circuits or a defective sensor. The compressor might be blocked during hot water charging.

• Open-circuit or short-circuit on sensor input
• Defective heating medium return sensor
• Continuous contact issue with the sensor

Click steps to track your progress.

1. 1

   Check the connections for the heating medium return sensor.

2. 2

   Examine the sensor for any physical damage.

3. 3

   This alarm typically resets automatically once the fault is corrected.

4. 4

   If the service technician symbol remains, contact your installer.