Nibe F1245 Service Manual

Alarm list
Alarm
In event of an alarm, the red lamp on the front lights up
and an alarm icon is displayed. First go through the
suggested actions shown in the display.
The alarm text in the display can vary depending on how
many heat pumps are connected to the system.
Example: sensor fault -EB1yy _EPxx _BT3. Where yy is the
HP number, xx is the cooling module
Repairers actionHeat pump action.CauseAlarm text on
the display
Alarm
no.
See fault-tracing schedule
page 37.
Calculated supply temp is set to
"min supply".
The input for the sensor re-
ceives unreasonably high or
low value for longer than 2
seconds.
Sensor fault: BT1
outdoor temper-
ature sensor
1
See fault-tracing schedule
page 38.
* BT12 is used to calculate de-
gree minutes. *Additional heat
is blocked. *If BT2 about intern-
ally controlled addition is active
and GP1 is regulated go to
manual operation
The input for the sensor re-
ceives unreasonably high or
low value for longer than 2
seconds.
Sensor fault: BT2
supply temperat-
ure sensor 1
2
See fault-tracing schedule
page 39.
Compressor blocked during hot
water charging.
Sensor not connected/de-
fective
Sensor fault: BT3
return line
sensor 1
3
(heating medium return).
See fault-tracing schedule
page 39.
GP2 switches to manual speed
if auto controlled is selected.
Sensor not connected/de-
fective
Sensor fault
BT10 brine in
10
(brine in).
See fault-tracing schedule
page 39.
Compressor blocked.
GP2 switches to manual speed
if auto controlled is selected.
The input for the sensor re-
ceives unreasonably high or
low value for longer than 2
seconds.
Sensor fault
BT11 brine out
11
See fault-tracing schedule
page 39.
Compressor blocked.
GP2 switches to manual speed
if auto controlled is selected.
The input for the sensor re-
ceives unreasonably high or
low value for longer than 2
seconds.
Sensor fault
BT12 condenser
out
12
See fault-tracing schedule
page 40.
Circulation pump (AZ1-GP2) in
FLM is blocked.
Sensor not connected/de-
fective
Sensor fault AZ1-
BT20
20
(exhaust air).
See fault-tracing schedule
page 40.
Circulation pump (AZ1-GP2) in
FLM is blocked.
Sensor not connected/de-
fective
Sensor fault AZ1-
BT21
21
(extract air).
Blocks the compressor. Stops all
fans and opens QN40
Sensor not connected/de-
fective
Sensor fault
AZ30-BT22 Sup-
ply air sensor
23
(Supply air)
See fault-tracing schedule
page 40.
Circulation pump (AZ1-GP2) in
FLM is blocked.
Sensor not connected/de-
fective
Sensor fault AZ1-
BT26
26
(brine, collector in).
27Chapter 6 | TroubleshootingF1245
6 Troubleshooting

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