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O
PERATING THE DIGITAL CONTROLLER
Operating the EKHB* unit comes down to operating the digital
controller.
CAUTION
Never let the digital controller get wet. This may cause an
electric shock or fire.
Never press the buttons of the digital controller with a hard,
pointed object. This may damage the digital controller.
Never inspect or service the digital controller yourself, ask
a qualified service person to do this.
Features and functions
The digital controller is a state of the art controller that offers full
control over your installation. It can control a heating/cooling and a
heating only installation.
Both installations are available in multiple versions which vary in
capacity, electrical supply and installed equipment (with an optional
domestic hot water tank with a booster heater).
Descriptions in this manual that apply to a specific
installation or that depend on the installed equipment,
are marked with an asterisk (*).
Some functions described in this manual may not be
available or should not be available. Ask your installer
or your local dealer for more information on
permission levels.
Basic controller functions
The basic controller functions are:
Turning the unit ON/OFF.
Operation mode change-over:
-
space heating (refer to
-
space cooling (refer to
-
domestic water heating (refer to
Selection of features:
-
quiet mode (refer to
page
-
weather dependent control (refer to
Temperature set point adjustment (refer to
(*) The functions 'space cooling' and 'domestic water
heating' can only be selected when the corresponding
equipment is installed.
The digital controller supports a power cut off of maximum 2 hours.
When autorestart is enabled (see
allows a power supply shut down of 2 hours without user intervention.
Clock function
The clock functions are:
24 hour real time clock.
Day of the week indicator.
Schedule timer function
The schedule timer function allows the user to schedule the
operation of the installation according to a daily or a weekly program.
Operation manual
3
page
5),
page
5) (*),
page
5) (*).
5),
page
6).
page
6).
"Field settings" on page
Name and function of buttons and icons
7
9
12
10
23
22
34
29
27
30
28
1.
HEATING/COOLING ON/OFF BUTTON
The ON/OFF button starts or stops the heating or cooling
function of the unit.
When the unit is connected with an external room thermostat,
this button is not operable and the icon
Pressing the ON/OFF button consecutively too many times may
cause malfunction of the system (maximum 20 times per hour).
Remark that pushing the
the domestic water heating. Domestic water heating is only
switched on or off by means of the
2.
OPERATION LED
The operation LED is lit during space heating or space cooling
operation. The LED blinks if a malfunction occurs. When the
LED is OFF, space heating or space cooling are inactive while
the other operation modes can still be active.
3.
OPERATION MODE ICONS
These icons indicate the current operation mode(s): space
heating (
h
quiet mode (
e.g. space
corresponding mode icons will be displayed simultaneously.
In a heating only installation, the
If the domestic hot water tank is not installed, the
never be displayed.
If the solar option is installed and active, the
11) this
blinking.
4.
EXTERNAL CONTROL ICON
This icon indicates that the room thermostat (optional) with
higher priority is controlling your installation. This external room
thermostat can start and stop the space heating/cooling
operation and change the operation mode (heating/cooling).
When the external room thermostat with a higher priority is
connected, the schedule timer for space heating and space
cooling will not function.
When the benefit kWh power rate signal is sent, the centralised
control indication
rate is active.
5.
DAY OF THE WEEK INDICATOR
This indicator shows the current weekday.
When reading or programming the schedule timer, the indicator
shows the set day.
6.
CLOCK DISPLAY
The clock display shows the current time.
When reading or programming the schedule timer, the clock
display shows the action time.
8
5
6
24
15
18
3
16
2
e
y
button has no influence on
v
0
hcws
), space cooling (
c
), domestic water heating (
s
). Within limits, different modes can be combined,
heating
and
domestic
c
icon will never be displayed.
e
e
will flash to indicate that benefit kWh power
1234567
8
Indoor unit for air to water heat pump system and options
17
1
4
14
21
19
11
20
13
25
26
33
32
31
y
is shown.
button.
w
) or
water
heating. The
w
icon will
w
icon will be
EKHBH/XE008BA
4PW56304-1
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