6
x
Operation
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FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
Defrost
There is a risk of the heat exchanger in the outdoor module (RRHQ) freezing if the outside temperature is low during room heating
operation or heating for the hot water supply. If this danger occurs, the system starts defrost operation
. It briefly
reverses the circulation and takes heat from the Indoor module (RKHB) to prevent the Outdoor module (RRHQ) freezing. After
defrost operation of a maximum of 8 minutes, the system automatically switches back the normal operation.
6.2.1 Switching the system on and off
• Press the
key.
The operation LED lights up green.
During start-up, the icon
is shown in the display of the user interface.
After start-up, the current operating mode is shown in the display of the user interface.
When heating operation is started, the pump is not started until a certain temperature is reached in the refrigerant heat exchanger.
This guarantees correct start-up of the heat pump.
When you press the key
again, the system is shut down and the Operation LED goes out.
6.2.2 Setting the control clock
Setting the time
• Press
key for at least 5 s.
The time and display of the weekday starts flashing.
• Use the keys
and
to set the time.
The time is increased/decreased by 1 min.
Holding the key
or
pressed increases/reduces the time by 10 min.
• Press the
key to save or press the key
again to cancel the setting.
Setting the weekday
• Press
key for at least 5 s.
The time and display of the weekday starts flashing.
• Use the keys
and
to set the weekday.
The weekday is increased/decreased by 1 min.
• Press the
key to save or press the
key again to cancel the setting.
6.2.3 Display of the current Temperature
• Press the key
for 5 s.
The icon and the initial water temperature on the Indoor module (RKHB) are shown.
The icons
and
flash in the display of the user interface.
• Use the keys
and
to select the following temperatures:
– External temperature
Icon
flashes.
– Process water tank temperature
Icon
flashes.
– Initial water temperature on the Indoor module (RKHB)
Icon
flashes.
If no button is pressed within 5 s, the control leaves display mode.
If a room thermostat or wireless room thermostat is connected to the ROTEX HeatPumpSolarUnit, the icon
is shown and the key
is not ready for operation.
In this case, the external room thermostat or wireless room thermostat switches on and off.
