Nibe F1345 - Page 56

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
Compressor blocked.No contact with the sensor
(temperature sensor, con-
denser supply).
Sens flt:BT1212
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Compressor blocked.No contact with the sensor
(temperature sensor, dis-
charge).
Sensor fault:
BT14 hot gas
sensor
14
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
• Compressor blocked.
• Stops all fans, opens
QN40.
No contact with the sensor
(temperature sensor, sup-
ply air).
Sens fault: AZ2-
BT23 outdoor air
sensor
23
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
• Additional heat is
blocked.
• New current value =
BT71 + 10K
No contact with the sensor
(temperature sensor, heat-
ing medium supply, extern-
al).
Err: BT2525
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Compressor blocked.No contact with the sensor
(sensor, low pressure).
Sensor flt:BP827
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
No action. Together with
alarm 25, heating is
blocked.
No contact with the sensor
(temperature sensor, heat-
ing medium return, extern-
al).
Sens flt:BT7128
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Compressor blocked.No contact with the sensor
(temperature sensor, com-
pressor).
Sens flt:BT2929
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Solar accessory is blocked.No contact with the sensor
(temperature sensor, solar
panel).
Flt: BT5333
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Solar accessory is blocked.No contact with the sensor
(temperature sensor, solar
coil).
Flt: BT5434
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Shunt closes. Burner stops.No contact with the sensor
(temperature sensor, boil-
er).
Flt: BT5235
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Controls the return line
sensor (EP21-BT3).
No contact with the sensor
(temperature sensor, heat-
ing medium supply, climate
system 2).
Flt: EP21 BT236
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Controls the return line
sensor (EP22-BT3).
No contact with the sensor
(temperature sensor, heat-
ing medium supply, climate
system 3).
Flt: EP22 BT237
• Open-circuit or short-cir-
cuit on sensor input.
• Defective sensor
Controls the return line
sensor (EP23-BT3).
No contact with the sensor
(temperature sensor, heat-
ing medium supply, climate
system 4).
Flt: EP23 BT238
NIBE F1345Chapter 5 | Disturbances in comfort56