Nibe F1345 - Page 59

May be due to/checkHeat pump action.CauseAlarm text on the
display
Alarm
no.
• Defective communication
cables.
• Incorrectly set dipswitch.
Accessory is blocked.Communication with the
room unit has been missing
for 15 seconds.
Perm. com. error
"HW comfort"
206
• Defective communication
cables.
• Incorrectly set dipswitch.
Accessory is blocked.Communication with the
accessory board has been
missing for 15 seconds.
Perm. com. error
"accessory"
245 -
251
Defective communication
cables.
Compressor blocked in the
slave.
Communication with the
slave is missing.
Slave heat pump
com. error.1-8
252
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
The mixing valve is closed
and only cold water is per-
mitted.
No contact with the sensor
(temperature sensor, hot
water, supply line).
Flt: QZ1-BT70253
Relevant compressor
blocked. Automatic return
at closed input.
On heat pump with 40/60
kW, terminal block X3 1-2
on the input board is open
(normally closed).
Motor protection
brine pump de-
ployed
255
• Defective communication
cables.
• Incorrectly set dipswitch.
Accessory is blocked.Communication with the
accessory board has been
missing for 15 seconds.
Perm. com. error
"ACS45”
257
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Relevant compressor
blocked.
Contact with the sensor
has been missing for longer
than 60 seconds (temperat-
ure sensor cooling, brine).
Sensor fault
EQ1 - BT57
258
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Controls on BT50.Contact with the sensor
has been missing for longer
than 60 seconds (temperat-
ure sensor cooling, supply
line heating dump).
Sensor fault
EQ1 - BT75
259
Check the sensor and its
connections.
No action.No contact with the sensor
(temperature sensor, cool-
ing/heat sensor).
Sen flt: BT74292
• Defective communication
cables.
• Incorrectly set DIP
switch.
Accessory is blocked.Communication fault with
the accessory board.
Com.flt Acc.297
Defective communication
cables.
Slave compressor blocked.Communication with the
slave has been missing for
15 seconds.
Perm. com. error
“Slave” 1-8
301 -
308
Check the sensor and its
connections.
Cooling degree minutes are
set to 0.
No contact with the sensor
(temperature sensor, extern-
al supply line cooling).
Sen flt: EQ1-BT25323
Defective communication
cables.
Set min. calculated cooling
supply to 18 °C
Communication with BM1
has been missing for
15 seconds.
Perm. com. error
BM1
324
59Chapter 5 | Disturbances in comfortNIBE F1345