CC — Outside sensor at TA 211 E has interruption

What does CC mean?

The outside temperature sensor (TA 211 E) is not providing a signal to the boiler, indicating a break in communication or a fault with the sensor itself. This affects weather-compensated control.

• The outside sensor (TA 211 E) is faulty or damaged.
• The connection cable to the outside sensor is interrupted, damaged, or disconnected.
• Environmental factors affecting sensor performance or connection.

Click steps to track your progress.

1. 1

   Check the outside sensor and its connection cable for any visible damage or loose connections.

2. 2

   Ensure the cable is securely connected at both the sensor and the boiler control unit.

3. 3

   If the cable or sensor is damaged, they may need to be replaced by a qualified technician.