8 Configuration
Installer reference guide
67
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1 – 2015.01
#
Code
Description
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.
N/A
[C‑01]
If there is a simultaneous demand for
space heating/cooling and domestic hot
water heating (by heat pump), which
operation mode has priority?
▪ 0: The operation mode with the
highest request has priority.
▪ 1: Always space heating/cooling has
priority.
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
Description
[A.6.1]
[3‑00]
Is the auto restart function of the unit
allowed?
▪ 0: No
▪ 1 (default): Yes
Preferential kWh rate power supply
#
Code
Description
[A.2.1.6]
[D‑01]
Connection to a preferential kWh rate
power supply:
▪ 0 (default): The outdoor unit is
connected to a normal power supply.
▪ 1: The outdoor unit is connected to a
preferential kWh rate power supply.
When the preferential kWh rate signal
is sent by the electricity company, the
contact will open and the unit will go in
forced off mode. When the signal is
released
again,
the
voltage-free
contact will close and the unit will
restart operation. Therefore, always
enable the auto restart function.
▪ 2: The outdoor unit is connected to a
preferential kWh rate power supply.
When the preferential kWh rate signal
is sent by the electricity company, the
contact will close and the unit will go in
forced off mode. When the signal is
released
again,
the
voltage-free
contact will open and the unit will
restart operation. Therefore, always
enable the auto restart function.
[A.6.2.1]
[D‑00]
Which heaters are allowed to operate
during preferential kWh rate power
supply?
▪ 0 (default): None
▪ 1: N/A
▪ 2: Backup heater only
▪ 3: N/A
See table below.
Setting 2 is only meaningful if the
preferential kWh rate power supply is of
type 1 or indoor unit is connected to a
normal kWh rate power supply (via
X2M/30-31) and the backup heater is
NOT connected to the preferential kWh
rate power supply.
Only for RHBH/X + RKHW:
[D‑00]
Booster heater
Backup heater
Compressor
0 (default)
Forced OFF
Forced OFF
Forced OFF
1
Permitted
2
Forced OFF
Permitted
3
Permitted
Only for RHVH/X: Do NOT use 1 or 3.
[D‑00]
Backup heater
Compressor
0 (default)
Forced OFF
Forced OFF
2
Allowed
Power saving function
INFORMATION
Only applicable for RRLQ004~008CAV3.
Defines whether the outdoor unit power supply can be interrupted
(internally by indoor unit control) during stand-still conditions (no
space heating/cooling nor domestic hot water demand). The final
