Nibe F1220 Service-Instruktion Seite 9

Alarm for the return line sensor
When the return line sensor is faulty or not connected, "Return line sensor" is displayed in
menu 1.0. Hot water production is blocked. The operating mode is changed to "Winter" in the
event of a return line sensor alarm.
Alarm for the hot water sensor
When the hot water sensor is faulty or not connected, "Alarm HW" is displayed in menu 1.0.
The operating mode is changed to "Winter" in the event of a hot water sensor alarm. Hot
water production is blocked.
Alarm for the condenser out sensor
When the condenser out sensor is not connected and was default set using button "S1" on the
CPU card, "Alarm cond HM" is displayed in menu 1.0. The operating mode is changed to
"Winter" in the event of a condenser out sensor alarm. Heating and hot water production is
blocked.
Alarm for boiler sensor
When docking 3 is selected in menu 9.2.13.1 and the boiler sensor is not connected, the alarm
for the boiler sensor is displayed in menu 1.0. The ignition signal for the oil-fired boiler is not
activated during the boiler sensor alarm.
Alarm for pool sensor
When pool control is selected in menu 9.2.10 and the pool sensor is not connected, the alarm
for the pool sensor is displayed in menu 1.0. Pool charging is not permitted to activate during
the pool sensor alarm.
Alarm for high return temperature
During hot water charging with the compressor, the return temperature is permitted to go up
to 58°C and during heating, to the set value in menu 2.7. If the return temperature is
exceeded, the compressor stops and "High return temperature" is displayed in menu 1.0.
When the return temperature has dropped by 2°C, the alarm resets. The electrical addition is
blocked during the alarm. If docking 3 is selected and the heat pump alarms a high return
temperature, the oil shunt closes.
Alarm for high condenser temperature
If the heat medium temperature from the condenser during compressor operation exceeds
65°C, the compressor stops and "Maxtemp cond HM" is displayed in menu 1.0. When the
cooling medium temperature drops below 63°C, the alarm resets and the compressor is
permitted to restart.