Outdoor sensor alarm
The following alarms set so that the system runs at minimum permitted supply temperature.
May be due toDescriptionAlarm text on the dis-
play
Alarm
no.
- Open-circuit or short-circuit on sensor input
- Sensor does not work (see "Temperature
sensor" section)
Sensor fault, outdoor temperature (BT1).Sensor fault UG30
Circulation pump alarm
May be due toDescriptionLED colour
Normal operation.Green, steady light
Standby.Green, flashing
Under voltage/over voltage.
High ambient or water temperature.
Abnormal situation.Red/green, flashing
Persistent pump fault; replace pump.Pump fault. Reset and check again.Red, flashing
No power to the pump.
Is the air pump working?
Electronics damaged; replace pump.
The pump does not have power.
LED damaged.
The electronics do not work.
No LED
65NIBE™ SPLIT ACVM 270
Miscellaneous
Alarm list
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