Nibe F2040 - Troubleshooting Guide; Sensor Fault BT3, 12 - Sensor Fault BT12, 15 - Sensor Fault BT15

Troubleshooting guide
3 - Sensor fault BT3, 12 - Sensor fault BT12, 15 - Sensor fault BT15
Is the actual sensor correctly
connected?
YES
YES
Replace the communication
board (AA23).
Action.
Defective sensor - replace.
Are the characteristics for the
sensor OK? (See
"Temperature sensor"
section)
NO
NO
NIBE™ F2040Chapter 6 | Troubleshooting52