sensor fault BT1 — sensor not connected or defective

What does 1 mean?

The BT1 sensor, which measures a specific temperature, is either not connected or is faulty. When this alarm is active, the calculated flow temperature is set to its minimum value.

• sensor not physically connected to the Heat Pump.
• Damaged or faulty sensor unit.
• Loose wiring connection to the sensor.

Click steps to track your progress.

1. 1

   Turn off the Heat Pump at the main breaker for at least 30 seconds.

2. 2

   Carefully check the wiring connections to the BT1 sensor. Ensure they are secure and free of corrosion.

3. 3

   Visually inspect the BT1 sensor for any physical damage.

4. 4

   Restore power to the Heat Pump and check if the alarm clears.

5. 5

   If the fault persists, the sensor may need to be replaced by a qualified technician.