Inverter
Temperature control:
• When the inverter temperature (Tho-IP) is higher than
85 °C, the compressor speed decreases by
4 rps/minute for AMS 10-8 or 2 rps/minute for AMS
10-12/-16.
• When the temperature drops below 81°C, the function
stops.
Current control:
• If the inverter's current exceeds the cut-out value, the
compressor speed reduces until it is below the same
value.
•
[A]Cooling/heatingProduct
11.5coolingAMS 10-6
13.5heating
15coolingAMS 10-8
16heating
17coolingAMS 10-12/-16
17heating
Compressor stop at high current:
• This is to protect the inverter against too high current.
• When the current out from the inverter exceeds the
cut-out value, the compressor stops.
• It then restarts after 3 minutes. If this occurs 4 times
within 30 minutes, the compressor stops with error
code E42 (Error code only applies to ACVM270). Re-
start by acknowledging the alarm.
Temperature and low
pressure sensor
The outdoor unit's shift, outdoor and low pressure
sensor:
If the following conditions occur for 5 seconds between
2 minutes and 2 minutes 20 seconds after compressor
start, the compressor stops:
• Exchanger temperature: lower than -50 °C.
• Outdoor temperature: lower than -30 °C.
• Low pressure switch: 0 V or less, or 4 V or more.
Hot gas and suction gas sensor:
If the following conditions occur for 5 seconds between
10 minutes and 10 minutes 20 seconds after com-
pressor start, the compressor stops.
• Discharge temperature: lower than -10 °C.
• Suction gas temperature: lower than -50 °C.
Compressor stop with manual reset:
If the above occurs 3 times within 40 minutes, the
compressor stops. Restart by acknowledging the alarm.
NIBE AMS10Chapter 4 | Description of functions28
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