Nibe ACVM 270, Installation And Maintenance Instructions Manual

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May be due to Description Alarm text on the dis-
play Alarm
no.
- Open-circuit or short-circuit on sensor input Sensor fault, suction gas in AMS 10 (Tho-S). Sensor fault Tho-S E53
- Sensor does not work (see "Temperature
sensor" section)
- Defective control board in AMS 10
- Open-circuit or short-circuit on sensor input
Sensor fault, low pressure transmitter in
AMS 10. Sensor fault LPT E54
- Sensor does not work (see "Temperature
sensor" section)
- Defective control board in AMS 10
- Fault in the refrigerant circuit
- Service valve closed
Insufficient refrigerant is detected upon start-
up in cooling mode. Insufficient refrigerant E57
- Loose connection sensor (BT15, BT3)
- Defective sensor (BT15, BT3)
- Too little refrigerant
- Defective circuit board for inverter in AMS 10
Failed start for compressor Inverter error E59
- Defective control board in AMS 10
- Compressor fault
Hot water alarm
The following alarms block hot water production via AMS 10. The addition is blocked completely.
May be due to Description Alarm text on the dis-
play Alarm
no.
- Contactor to internal electricity defective Too high a temperature (>90 °C) on hot water
sensor (BT6). High HW temp. 8
- Incorrect external addition setting
- Contactor to internal electricity defective
Too high a temperature (>90 °C) on immersion
heater sensor (BT19). High AH temp. 9
- Incorrect external addition setting
- Open-circuit or short-circuit on sensor input
Sensor fault, hot water (BT6). S. fault HW 34
- Sensor does not work (see "Temperature
sensor" section)
- Open-circuit or short-circuit on sensor input
Sensor fault, immersion heater (BT19). S. fault AH 35
- Sensor does not work (see "Temperature
sensor" section)
Supply alarm
The following alarms switch off heating/cooling. Only hot water production is permitted.
May be due to Description Alarm text on the dis-
play Alarm
no.
- Sensor does not work (see "Temperature
sensor" section) Too high a temperature (>90 °C) on supply line
sensor, system 1 (BT2). High VBF1 10
- Sensor does not work (see "Temperature
sensor" section) Too high a temperature (>90 °C) on supply line
sensor, system 2. High VBF2 11
- Open-circuit or short-circuit on sensor input Sensor fault, supply, system 1 (BT2). Sensor fault VBF1 36
- Sensor does not work (see "Temperature
sensor" section)
- Open-circuit or short-circuit on sensor input
Sensor fault, supply, system 2. Sensor fault VBF2 37
- Sensor does not work (see "Temperature
sensor" section)
NIBE™ SPLIT ACVM 270 64
Miscellaneous
Alarm list