System Settings - Daikin Altherma ERLQ004-006-008CA Reference Manual

heating operations will stop and need to be recovered manually. The
user interface will then ask you to confirm whether the backup heater
can take over the heat load or not. When the heat pump fails,
appear on the user interface. If the house is unattended for longer
periods, we recommend that setting [A.5.1.2] Emergency shall be
set to Automatic.
# Code
[A.5.1.2] N/A Defines whether in an emergency
situation the backup heater is allowed to
automatically take over the entire heat
load or whether manual confirmation is
required.
▪ 0: Manual (default)
▪ 1: Automatic
INFORMATION
The auto emergency setting can be set in the menu
structure of the user interface only.
INFORMATION
If a heat pump failure occurs and [A.5.1.2] is set to Manual,
the room frost protection function, the underfloor heating
screed dryout function, and the water pipe antifreeze
function will remain active even if the user does NOT
confirm emergency operation.
Bottom plate heater
Applies only to installation with an outdoor unit ERHQ and the option
bottom plate heater kit is installed.
▪ [F-02] Bottom plate heater ON temperature: defines the outdoor
temperature below which the bottom plate heater will be activated
by indoor unit in order to prevent ice build-up in the bottom plate of
the outdoor unit at lower outdoor temperatures.
▪ [F-03] Bottom plate heater hysteresis: defines the temperature
difference between bottom plate heater ON temperature and the
bottom plate heater OFF temperature.
Bottom plate heater
a
[F-03]
b
T
A
[F-02]
T Outdoor temperature
A
a On
b OFF
CAUTION
The bottom plate heater is controlled via EKRP1HB.
# Code
N/A [F-02] Bottom plate heater ON temperature:
3°C~10°C (default: 3°C)
N/A [F-03] Hysteresis: 2°C~5°C (default: 5°C)
INFORMATION
Dependent from setting [F-04] contact Y2 located on digital
I/O PCB (EKRP1HB) controls the option bottom plate
heater. See illustration below for the schematic location of
this contact. For complete upwiring, see
diagram" on page 78.
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
will
Description
Description
"14.6 Wiring
X2M
X1M
YC Y1 Y2 Y3 Y4
8.3.4

System settings

Priorities
# Code
N/A [5‑02] Space heating priority.
Defines whether backup heater will
assist the heat pump during domestic
hot water operation.
Consequence: Shorter tank heating
operation time and shorter interruption
of the space heating cycle.
This setting MUST always be 1.
[5‑01] Equilibrium temperature and
[5‑03] Space heating priority
temperature are related to backup
heater. So, you must set [5‑03] equal or
a few degrees higher than [5‑01].
If the backup heater operation is limited
([4‑00]=0) and the outdoor temperature
is lower than setting [5‑03], the
domestic hot water will not be heated
with the backup heater.
N/A [5‑03] Space heating priority temperature.
Defines the outdoor temperature which
below the backup heater will assist
during domestic hot water heating.
Auto-restart
When power returns after a power supply failure, the auto restart
function reapplies the remote controller settings at the time of the
power failure. Therefore, it is recommended to always enable the
function.
If the preferential kWh rate power supply is of the type that power
supply is interrupted, always enable the auto restart function.
Continuous indoor unit control can be guaranteed independent of the
preferential kWh rate power supply status, by connecting the indoor
unit to a normal kWh rate power supply.
# Code
[A.6.1] [3‑00] Is the auto restart function of the unit
allowed?
▪ 0: No
▪ 1 (default): Yes
8 Configuration
OFF ON
SS1
Description
Description
Installer reference guide
53