Daikin Altherma 3 GEO Series Installer's Reference Manual page 63

# Code
[1.1] N/A Schedule
▪ 0 No: Room temperature is controlled
by the user.
▪ 1 Yes: Room temperature is controlled
with a schedule and can be modified
by the user.
Heating schedule
This is available for all models.
You can set the room temperature heating schedule using the
schedule screen. For more information about this screen, see
Example" [ 4 59].
"10.3.7 Schedule screen:
Antifrost
Antifrost [1.4] prevents the room from getting too cold. This
setting is applicable when [2.9] Control=Room thermostat, but
also offers functionality for leaving water temperature control and
external room thermostat control. In case of the latter two,
Antifrost can be activated by setting field setting [2-06] to 1.
Room frost protection, when activated, is not guaranteed when there
is no thermostat in the room that can activate the heat pump. This is
the case when [2.9] Control=External room thermostat and
[C.2] Space heating/cooling is set to Off, or if [2.9]
Control=Leaving water. In these cases, the Antifrost
functionality will heat the space heating water to a reduced setpoint
when the outdoor temperature becomes lower than 4°C. This is
summarised in the table below:
Main zone unit control
method [2.9]
Leaving water temperature
control ([C‑07]=0)
External room thermostat
control ([C‑07]=1)
Room thermostat control
([C‑07]=2)
INFORMATION
If a U4 error occurs, room frost protection is NOT
guaranteed.
NOTICE
If the room Antifrost setting is active and a U4 error
occurs, the unit will automatically start the Antifrost
function via the backup heater. If the backup heater is not
allowed, the room Antifrost setting MUST be disabled.
For more detailed information about room frost protection in relation
to the applicable unit control method, see the sections below:
Leaving water temperature control ([C‑07]=0)
Under leaving water temperature control, room frost protection is
NOT guaranteed. However, if room antifrost [2‑06] is activated,
limited frost protection by the unit is possible:
EGSAH/X06+10DA9W(G)
Daikin Altherma 3 GEO
4P569820-1A – 2019.09
Description
Description
Room frost protection is NOT
guaranteed.
Allow for the external room
thermostat to take care of room
frost protection:
▪ Turn ON [C.2]: Space heating/
cooling
Allow for the user interface used as
room thermostat to take care of
room frost protection:
Room
▪ Choose [1.4.1]=1:
Antifrost > Activation > Yes
▪ Set the room antifrost setpoint
([1.4.2]): Room > Antifrost >
Room setpoint
If...
Space heating/cooling is OFF
and the outdoor ambient
temperature drops below 4°C
Space heating/cooling is ON
and the operation mode is
"heating"
Space heating/cooling is ON
and the operation mode is
"cooling"
External room thermostat control ([C‑07]=1)
Under external room thermostat control, room frost protection is
guaranteed by the external room thermostat, provided that Space
heating/cooling [C.2] is turned ON and Emergency [9.5.1] is set
to Automatic or auto SH normal/DHW off. However, if room
Antifrost [2-06] is activated, limited frost protection by the unit is
possible.
In case of one leaving water temperature zone:
If...
Space heating/cooling is OFF
and the outdoor ambient
temperature drops below 4°C
Space heating/cooling is ON,
the external room thermostat is
"Thermo OFF" and the outdoor
temperature drops below 4°C
Space heating/cooling is ON
and the external room thermostat
is "Thermo ON"
In case of two leaving water temperature zones:
If...
Space heating/cooling is OFF
and the outdoor ambient
temperature drops below 4°C
>
Space heating/cooling is ON,
the external room thermostat is
"Thermo OFF", the operation
mode is "heating" and the
outdoor temperature drops below
4°C
Space heating/cooling is ON
and the operation mode is
"cooling"
Room thermostat control ([C‑07]=2)
During room thermostat control, room frost protection is guaranteed
if it is enabled. When room frost protection [2‑06] is activated and the
room temperature drops below the room antifrost temperature [2‑05],
the unit will supply leaving water to the heat emitters to heat up the
room again.
# Code
[1.4.1] [2-06]
10 Configuration
Then...
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
The unit will supply leaving water
to the heat emitters to heat up
the room according to normal
logic.
There is no room frost protection.
Then...
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
Room frost protection is
guaranteed by the normal logic.
Then...
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
There is no room frost protection.
Description
Activation:
▪ 0 No: Antifrost functionality is OFF.
▪ 1 Yes: Antifrost functionality is on.
Installer reference guide
63