Outdoor Temperature Sensor Fault - Incorrect temperature readings

What does Outdoor Temp Sensor Fault mean?

The boiler is detecting an issue with the outdoor temperature sensor, which can lead to incorrect heating control based on external conditions.

• Defective outdoor sensor
• Incorrect wiring to the sensor
• Issue with the VR20 circuit board

Click steps to track your progress.

1. 1

   Check the wiring of the outdoor temperature sensor for proper connection.

2. 2

   Verify the resistance of the outdoor sensor is within acceptable limits (requires measurement).

3. 3

   If wiring and sensor resistance are correct, replacement of the VR20 circuit board may be necessary.