Nibe SPLIT ACVM270 - Page 32

Resets alarmTriggers alarmAlarm text on the
display
Alarm
no.
- Sensor does not work (see "Temperature
sensor" section)
Too high a temperature (>90 °C) on supply
line sensor, system 2.
High VBF211
- The alarm activates output “High priority
alarm” and must be reset manually.
- Low flow during defrostOccurs if the alarm 77 occurs 10 times in
succession.
Defrosting interrupted14
- Abnormally low temperature in the climate
system
- Lack of refrigerant or leak
- The alarm activates output “High priority
alarm” and must be reset manually.
- Indoor unit and outdoor unit not compat-
ible with each other.
Indoor unit and outdoor unit do not commu-
nicate with each other.
OU not compatible15
- The alarm activates output “High priority
alarm” and must be reset manually.
- Low flow during defrostOccurs if the alarm 78 occurs 10 times in
succession.
Defrosting interrupted16
- The alarm activates output “High priority
alarm” and must be reset manually.
- Open-circuit or short-circuit on sensor inputSensor fault, outdoor temperature (BT1).Sensor fault UG30
- Sensor does not work (see "Temperature
sensor" section)
- Open-circuit or short-circuit on sensor inputSensor fault, high pressure (BP4).S. fault HP31
- Sensor does not work
- The alarm activates output “High priority
alarm” and must be reset manually.
- Open-circuit or short-circuit on sensor inputSensor fault, cond out (BT12).Sensor fault KF32
- Sensor does not work (see "Temperature
sensor" section)
- The alarm activates output “High priority
alarm” and must be reset manually.
- Open-circuit or short-circuit on sensor inputSensor fault, liquid line (BT15).S. fault Liquid line33
- Sensor does not work (see "Temperature
sensor" section)
- The alarm activates output “High priority
alarm” and must be reset manually.
- Open-circuit or short-circuit on sensor inputSensor fault, hot water (BT6).S. fault HW34
- Sensor does not work (see "Temperature
sensor" section)
- The alarm activates output “High priority
alarm” and must be reset manually.
- Open-circuit or short-circuit on sensor inputSensor fault, immersion heater (BT19).S. fault AH35
- Sensor does not work (see "Temperature
sensor" section)
- The alarm activates output “High priority
alarm” and must be reset manually.
NIBE SPLIT ACVM270Chapter 5 | Troubleshooting32