Nibe F1345 - Page 60

May be due to/checkHeat pump action.CauseAlarm text on the
display
Alarm
no.
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
The sensor signal is re-
placed by EPXX-BT3-10K
during shunt control.
The input for the sensor re-
ceives unreasonably high
or low value for longer than
2 seconds.
Sensor fault
EPXX-BT2
336-
339
Defective communication
cables.
None.Communication with the
accessory board OPT has
been missing for
60 seconds.
Com. error PCA
Accessory
357
Check the gas boiler.None.Alarm from GBM (OPT).GBM alarm358
This alarm was generated
by the gas boiler
Defective communication
cables.
Accessory is blocked.Communication with Pool
2 has been missing for
15 seconds.
Perm. com. error
pool 2
372
Insufficient circulation in
the heating medium circuit.
Compressor blocked.The inverter has been lim-
ited by temperature protec-
tion for an extended period.
inv. overheated483
• Bleed heat pump and cli-
mate system.
• Check that the particle
filter is not blocked.
• Open any radiator/under-
floor heating thermostats.
Mounting inverter.
• Check the inverter’s error
message in menu 3.1 -
service info.
• Check the inverter for
NIBE PV.
No action.The inverter in NIBE PV has
an error message.
The inverter has
a message.
504
Check the connection of
the PV panels/inverter.
No action.The inverter in NIBE PV has
an earth fault.
Inverter has earth
fault.
505
Check fuses and mains
voltage to the inverter.
No action.The mains supply has been
outside the inverter’s
working range for an exten-
ded period.
Mains voltage
outside inv. work.
range
506
Check the inverter for NIBE
PV.
No action.The inverter has high DC
voltage.
The inverter has
high DC voltage.
510
Check the communication
cable and its connections
to the inverter.
No action.There has been no commu-
nication with the inverter
for five days.
Inverter com.511
Check the sensor and its
connections.
If HTS 2 is selected as the
controlling accessory for
cooling, the calculated sup-
ply temperature is set to
18°C.
There is no communication
with accessory HTS 2.
Com. flt PCA Acc.
HTS 2
524
NIBE F1345Chapter 5 | Disturbances in comfort60