EN - 54
If the outdoor sensor's radio signal is lost, the heat pump continues to operate using the same water law and its outdoor temperature
setpoint is xed at 0°C. This is known as backup mode. The control terminal displays:
Outdoor temperature 0°C
I: Backup mode operating indicator
I
Backup mode is automatically cancelled when the outdoor temperature sensor sends a signal to the heat pump.
Display reads "Outdoor sensor fault":
A power outage on the heat pump causes an outdoor sensor fault to be displayed
The outdoor temperature sensor sends a new signal to the electronic
board every 30 minutes. To eliminate the fault opposite:
• Wait no longer than 30 minutes for the sensor to send a new
signal to the electronic board
• Remove the batteries from the outdoor sensor, wait several
seconds (approx. 5 seconds) then reinsert them to wake the
outdoor sensor and enable it to send a new value.
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