Nibe F1245 Service Manual

Alarm 73–95 - perm. com.error accessory card
Are the communications cables
correctly connected:
- between the input circuit board
(AA3-X4) and accessory card
(AA5-X4) (does not apply to alarm
79)?
- to supplied accessory card (if
connected )?
- between the base card (AA2-X6)
and accessory card (AA5-XJ6)
(does not apply to alarm 79)?
YES
NO
Has the fault been corrected?
Replace the accessory card
(AA5).
OK.YES
Action.
NO
Replace the input circuit board
(AA3).
Check the accessory card:
- Is power lit green?
- Does com flash once/sec?
Check and rectify:
- that the voltage supply is on
terminal block AA5-X1 and that it
is correctly connected.
- that the fine-wire fuse AA5-F1 is
complete.
- that miniature circuit-breaker FA1
has not tripped.
NO
YES
NO
Has the fault been corrected? OK.YES
Replace the display card (AA4).
Is the dip-switch (AA5-S2)
correctly set for the accessory?
Action.NO
YES
47Chapter 6 | TroubleshootingF1245

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