Nibe SPLIT ACVM270 - 5 Troubleshooting; Alarm List

Alarm list
Acknowledging alarms
No harm in acknowledging an alarm. If the cause of the
alarm remains, the alarm recurs.
■
When an alarm has been triggered, it is acknowledged
in menu 9.7 (service menu) by switching NIBE SPLIT
ACVM270 off and on using the switch (SF1). Note that
when the power is switched on there is a 30 minute
delay before the heat pump restarts.
■
When the alarm cannot be reset using the switch (SF1),
the operating mode, "Add. heat only", can be activated
to return to a normal temperature level in the house.
This is most easily carried out by holding the ”Operat-
ing mode” button pressed in for 7 seconds.
NOTE
Recurring alarms mean that there is a fault in
the installation.
Alarm
Resets alarmTriggers alarmAlarm text on the
display
Alarm
no.
- The temperature limiter has tripped during
transportation
Temperature limiter in NIBE SPLIT ACVM270
has tripped.
TB alarm3
- High temperature in NIBE SPLIT ACVM270
- Tripped circuit fuse (L2
- The alarm activates output “High priority
alarm” and must be reset manually.
- Tripped circuit fuse (L2) and (L3)No voltage to the outdoor unit from NIBE
SPLIT ACVM270.
OU power failure4
- The alarm activates output “High priority
alarm” and must be reset manually.
- Tripped miniature circuit breaker (-FA2)
- Low temperature during coolingToo low temperature out from the condens-
er.
Low condenser out5
- Low flow during cooling
Occurs if alarm 70 occurs 3 times within an
hour.
- The alarm activates output “High priority
alarm” and must be reset manually.
- Low flow in heating operationToo high temperature out from the condens-
er.
High KF6
- Too high set temperatures
Occurs if alarm 71 occurs 3 times within an
hour.
- The alarm activates output “High priority
alarm” and must be reset manually.
- Low flow during defrostAnti-freeze of heat exchanger.Anti freeze HX7
- Abnormally low temperature in the climate
system
Occurs if alarm 72 occurs 3 times within an
hour.
- The alarm activates output “High priority
alarm” and must be reset manually.
- Contactor to internal electricity defectiveToo high a temperature (>90 °C) on hot wa-
ter sensor (BT6).
High HW temp.8
- Incorrect external addition setting
- The alarm activates output “High priority
alarm” and must be reset manually.
- Contactor to internal electricity defectiveToo high a temperature (>90 °C) on immer-
sion heater sensor (BT19).
High AH temp.9
- Incorrect external addition setting
- The alarm activates output “High priority
alarm” and must be reset manually.
- Sensor does not work (see "Temperature
sensor" section)
Too high a temperature (>90 °C) on supply
line sensor, system 1 (BT2).
High VBF110
- The alarm activates output “High priority
alarm” and must be reset manually.
31Chapter 5 | TroubleshootingNIBE SPLIT ACVM270
5 Troubleshooting