Nibe F2120 - Technical Data; Product Specifications

May be due toDescriptionText in displayAlarm,
outdoor
unit
Alarm, in-
door unit
- Inverter disconnectedCommunication between circuit
board for inverter and control
board broken.
Inverter error204264
Loose cables between inverter and
base board
- Defective circuit board for inverter
in F2120
- Defective base board in F2120
- Air flow through evaporatorSafety defrost 10 times in a row.Recurring safety de-
frost
6341
- Strong wind against fan
- Fault in cooling circuit
- Wind effectBP8 below the limit value, 5 low
pressure alarms within 4 hours.
Recurring low pressure
alarm
72344
- Refrigerant leak
- Defective expansion valve
- Wind effectBP9 above the limit value, 5 high
pressure alarms within 4 hours.
Recurring high pres-
sure alarm
74346
- Air in system
- Low system pressure
- Defective expansion valve
Loose cablingCommunication fault to AA2, 3 re-
peated communication faults with-
in 2 hours.
Inverter alarm type II104421
- Poor heating medium flow.2 repeated LP/HP pressure switch
alarms within 2.5 hours
Triggered pressure
switch LP/HP
108425
- Refrigerant leak.
Multiple alarms at the same timeTemporary error message from in-
verter, 3 times within 2 hours.
Inverter alarm type II112429
High voltage in to F2120.Phase voltage to inverter too high,
3 times within 2 hours or persist-
ently high for 1 hour.
Inverter alarm type II114431
- Low voltagePhase voltage to inverter too low,
below 180V, 3 times within 2 hours
or persistently low for 1 hour.
Inverter alarm type II116433
- Phase drop to F2120.
At least one compressor phase is
missing
One compressor phase has been
missing 3 times within 2 hours or
missing continuously for 1 hour.
Inverter alarm type II118435
Overcurrent protection tripped
(1x230V products).
High current to inverter 3 times
within 2 hours.
Inverter alarm type II120437
- Poor circulation in heating medi-
um circuit.
Inverter temporarily above max.
working temperature 3 times within
2 hours.
Inverter alarm type II122439
- Poor position of inverter against
cooling plate.
Too high current to inverterHigh current to inverter 3 times
within 2 hours.
Inverter alarm type II124441
- Poor circulation in heating medi-
um circuit.
Inverter temporarily above max.
working temperature 3 times within
2 hours.
Inverter alarm type II126443
- Poor position of inverter against
cooling plate.
23Chapter 5 | TroubleshootingF2120