Daikin Altherma EHFH03S18D 3V Series Installer's Reference Manual page 127

ERLA03D + EHFH03S18D
Daikin Altherma 3 R F
4P596806-1C – 2022.09
# Code
N/A [C-06]
[A.2.2.B] [C-08]
Digital I/O PCB
# Code
N/A [C-02]
Description
Contact type add.
In external room thermostat control with 2
leaving water temperature zones, the type of the
optional room thermostat for the additional
leaving water temperature zone must be set. See
"6 Application guidelines" [
▪ 1 (Thermo ON/OFF): See Contact
main. Connected on the indoor unit (X2M/1a).
▪ 2 (H/C request)(default): See Contact
type main. Connected on the indoor unit
(X2M/1a and 2a).
External sensor When an optional external
ambient sensor is connected, the type of the
sensor must be set.
▪ 0 (No: NOT installed. The thermistor in the user
interface and in the outdoor unit are used for
measurement.
▪ 1 (Outdoor sensor): Connected to PCB of
the indoor unit measuring the outdoor
temperature. Remark:
functionality, the temperature sensor in the
outdoor unit is still used.
▪ 2 (Room sensor): Connected to PCB of the
indoor unit measuring
temperature. The temperature sensor in the
user interface is NOT used anymore. Remark: ;
This value only has meaning in room
thermostat control.
Description
Ext. backup heat src
Indicates if the space heating is also performed
by means of another heat source than the
system.
▪ 0 (No)(default): NOT installed.
▪ 1 (Bivalent): Installed. The auxiliary boiler
(gasboiler, oil burner) will operate when the
outdoor ambient temperature is low. During
the bivalent operation, the heat pump is turned
OFF. Set this value in case an auxililary boiler is
used. See "6 Application
10 Configuration
|
4
29].
type
: For some
the indoor
guidelines" [ 4 29].
Installer reference guide
127