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Switching low-noise mode on/off
In quieter operation, the speeds of the fan and, if
appropriate, the compressor are reduced. This
reduces the sound level from operating the outdoor
unit.
Tap the following buttons:
1.
2. "Extended menu"
3. "Low-noise mode"
4. "Switch on/off"
5. "ON" if you want to start low-noise mode.
"OFF" if you want to stop low-noise mode.
Heat pump cascade
If you are using a heat pump cascade, you can carry
out the settings for low-noise mode only on the lead
heat pump.
Setting the time program for quieter operation
In the time program for quieter operation, set the time
phases in which the speed of the fan and, if required,
of the compressor are limited.
To do so, select an operating status for each time
phase: See chapter "Operating status for quieter oper-
ation".
Factory setting: No time phase from 00:00 to 24:00 h
for every day of the week. The fan speed is not limited.
Tap the following buttons:
1.
2. "Extended menu"
3. "Low-noise mode"
4. "Time program"
5. Set the required time phases and operating status.
to change the time phase
for a new time phase
to delete a time phase.
to select the time phase if more than one
time phase is set.
Note
The fan speed is not limited between the set time
phases.
If is not displayed, your contractor has locked the
setting for low-noise mode. Your contractor can
unlock the controls. You can check a time program
set by the contractor for quieter operation under
"Information".
For how to set a time program: See page 22.
Operating status for quieter operation
You can choose between 2 operating statuses: "Slight"
The max. fan speed and, if required, that of the com-
pressor are reduced by a small amount.
"Significant"
The max. fan speed and, if required, that of the com-
pressor are reduced by a large amount.
Switching emergency mode on/off
In emergency mode, the outdoor unit is switched off.
Room heating and DHW heating are provided by the
electric booster heater (instantaneous heating water
heater). If an external heat generator is connected, this
will take over the room heating.
In emergency mode, room cooling is switched off.
Tap the following buttons:
1.
2. "Extended menu"
3. "Emergency mode"
4. "ON" if you want to start emergency mode.
"OFF" if you want to stop emergency mode.
Heat pump cascade
If you are using a heat pump cascade, you must switch
on emergency mode on each heat pump separately.
Advanced
Quieter operation
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37


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