Nibe F1345 Service Manual page 36

Troubleshooting guide
Alarm 3, 10, 11, 12, 14, 15, 17, 29 - sensor fault
Applies to sensor fault BT 3,BT10,BT11,BT12,BT14,BT15,BT17,BT29.
Is the actual sensor correctly
connected?
YES
Are the characteristics for the
sensor OK? (See "temperature
sensor" section.)
YES
Is the 22-pin wiring connector on
AA100 (joint board) connected
correctly?
YES
(Applies to lower module A on
EP14) Is the edge connector on
terminal block AA2-X3 (base
board) connected correctly?
(Applies to upper module B on
EP15.)
Is the edge connector on terminal
block AA26-X3 (base board)
connected correctly?
YES
(Applies to lower module A on
EP14.) Are the characteristics for
the sensor OK? Measured from
edge connector AA2-X3 (base
board).
(Applies to upper module B on
EP15.) Are the characteristics for
the sensor OK? Measured from
edge connector AA26-X3 (base
board). (See section "Electrical
wiring diagram" in Installer
Manual.)
YES
Defective AA2 or AA26 (base
board)
- Replace.
36 Chapter 6 | Troubleshooting
Action.
NO
NO Defective sensor - Replace.
NO Action.
NO
Action.
Defective AA100 (joint card) -
NO
Replace.
F1345