Nibe S2125 - Alarm List

Alarm list
May be due toDescription existing alarmAlarm text on the displayAlarms
S-series
Alarms
VVM/SMO
(S2125)
Poor flow.5 repeated alarms for low low-pres-
sure within 4 hours.
Low lp cooling212156 (80)
Significant wind effect.
Fan blocked or not connec-
ted.
5 unsuccessful start attempt.Fan alarm from heat
pump
233224 (182)
Connection, supply line re-
turn line switched around,
Return is hotter than flow.Exchange Sensors
flow / return
234225 (8)
Open-circuit or short-circuit
on sensor input.
Sensor fault BT3.
Sensor fault BT12.
Sensor fault from heat
pump
530
531
227 (34)
227 (36)
Sensor fault BT14.532227 (38)
Sensor fault BT15.533227 (40)
Sensor fault BT16.534227 (42)
Sensor fault BT17.535227 (44)
Sensor fault BT28.536227 (46)
Sensor fault BP8.538227 (50)
Sensor fault BP9.539227 (52)
Sensor fault BT84.541227 (56)
System temperature and/or
flow too low.
10 failed consecutive defrostings.Unsuccessful defrosting236228 (2)
Insufficient available system
volume.
Significant wind effect.
Poor flow, poor heat trans-
fer.
Operation is stopped from the in-
door section after less than 5
minutes.
Short run times for com-
pressor
237229 (4)
Incorrect settings for heating
and/or hot water.
Disruption in the refrigerant
circuit.
3 repeated alarms for high discharge
within 4 hours.
Hot gas alarm238230 (78)
Lack of refrigerant.
Lack of refrigerant.5 repeated alarms for low evapora-
tion temperature within 4 hours.
Low evaporation temp240232 (76)
Blocked expansion valve.
Significant wind effect.
Poor connection between
PCB and inverter.
Alarm 203 from heat pump for 20
seconds.
Communication fault to
Inverter
254264 (203)
Inverter unpowered or
broken.
Defective inverter. Discharge
sensor (BT14) has come
loose from its mount.
The inverter has tried to heat up the
compressor, but has failed.
Fault in inverter. Heating
not working.
494298 (92)
The discharge sensor, BT14,
or high pressure sensor,
BP9, has come loose and is
not giving correct measure-
ment values.
Sensor BT14 or BP9 has come loose
or is otherwise defective.
Sensor BT14 or BP9
loose or defective
495300 (94)
NIBE S2125Chapter 8 | Disturbances in comfort42