Nibe F1345 Service Manual page 29

Alarm Alarm text on the
no. display
57 Erroneous software
58 Pressure switch
alarm
60 Lo Bri out
70 Communication
fault with PCA In-
put.
71 Com.flt Base
72 Comm.flt MC
73-94 Com.err. Acc.
96-99 Com.err. RMU
130- Perm. com. error to
133 climate system 5-8
206 Perm. com. error
"HW comfort"
236 Sensor fault AZ2-
BT20
F1345
Cause
The heat pump software and
serial numbers do not match
each other.
The high or low pressure
switch has tripped.
The temperature of the out-
going brine (BT11) drops be-
low the set minimum temper-
ature and the alarm is selec-
ted to be permanent.
Communication with the in-
put board (AA3) is missing.
Communication with the in-
put board (AA2 or AA26) is
missing.
Communication with the
soft-start board (AA10) is
missing.
Communication with the ac-
cessory card is missing.
Communication with the
room unit is missing.
Communication with the ac-
cessory board has been
missing for 15 seconds.
Communication with the
room unit has been missing
for 15 seconds.
Contact with the sensor has
been missing for longer than
60 seconds (exhaust air).
Heat pump action.
Compressors are stopped
and relay is deactivated.
Compressor blocked.
Compressor blocked.
Blocking the relevant com-
pressor. If the heat pump is
the master, the calculated
supply is set to min. supply.
Compressor blocked.
Compressor blocked.
Accessory is blocked.
Room unit is blocked.
Accessory is blocked.
Accessory is blocked.
Blocks AZ2-GP2 (FLM2).
May be due to
Incorrect software installed.
Bad circulation in the brine
or heating medium side.
Bad circulation in the brine.
■
Check the brine pump.
■
Check that the brine has
been vented.
■
Check the brine's freezing
point.
Defective communication
cables.
Defective communication
cables.
Defective communication
cables.
■
Defective communication
cables.
■
The accessory is activated
in the display while not
connected with the com-
munication cable.
■
Incorrectly connected
communication cable.
■
Incorrectly set dipswitch.
■
No electrical supply to the
accessory card.
Defective communication
cables.
Selected accessory not in-
stalled.
■
Defective communication
cables.
■
Incorrectly set dipswitch.
■
Open-circuit or short-cir-
cuit on sensor input.
■
Defective sensor
Chapter 6 | Troubleshooting 29