Nibe F1245 Service Manual

Alarm 71 - perm. com.error input card
YES
Has the fault been corrected?
Replace the base board (AA2 /
AA26).
OK.YES
Replace the display card (AA4).
Is the wiring connector (Com2)
correctly connected on base board
(AA2-X5) and on the input board
(AA3-X1)?
And is the wiring connector (Com3)
correctly connected on input board
(AA3-X2) and on the display board
(AA1-X8)?
(see electrical wiring diagram in
IHB)
Action.NO
NO
Alarm 72 - perm. com.error soft-start card
Is the wiring connection (W304)
correctly connected on base card
(AA10-X5) and on the input card
(AA2-X9)?
YES
YES
Check the soft start card:
Is power lit green?
Does com flash once/sec?
Replace the base card (AA2).NO
Action.NO
Replace the soft start card (AA10).
F1245Chapter 6 | Troubleshooting46

Nibe F1245 Specifications

General

Refrigerant	R410A
Control System	NIBE SMO 40
Dimensions (HxWxD)	1800 x 600 x 620 mm
Energy Efficiency Class Heating 35°C	A++
Energy Efficiency Class Heating 55°C	A++
Heating Capacity	5-12 kW
COP Heating	4.5
Integrated Hot Water Tank	180 liters
Power Input Heating	1.0 - 3.0 kW