Operation manual
3
E(D/B)(H/L)Q011~0W1
Unit for air to water heat pump system and options
4PW51122-1
Name and function of buttons and icons
1.
COOLING/HEATING ON/OFF BUTTON
y
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
e
is shown.
Pressing the ON/OFF button consecutively too many times may
cause malfunction of the system (maximum 20 times per hour).
2.
OPERATION LED
0
The operation LED is lit during space cooling or space heating
operation. The LED blinks if a malfunction occurs. When the
LED is OFF, space cooling or space heating are inactive while
the other operation modes can still be active.
3.
OPERATION MODE ICONS
hcws
These icons indicate the current operation mode(s): space
heating (
h
), space cooling (
c
), domestic water heating (
w
) or
quiet mode (
s
). Within limits, different modes can be combined,
e.g. space heating and domestic water heating. The
corresponding mode icons will be displayed simultaneously.
In a heating only installation, the
c
icon will never be displayed.
If the domestic hot water tank is not installed, the
w
icon will
never be displayed.
If the solar option is installed and active, the
w
icon will be
blinking.
4.
EXTERNAL CONTROL ICON
e
This icon indicates that an external room thermostat 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 (cooling/heating).
When an external room thermostat with a higher priority is
connected, the schedule timer for space cooling and space
heating will not function.
5.
DAY OF THE WEEK INDICATOR
1234567
This indicator shows the current weekday.
When reading or programming the schedule timer, the indicator
shows the set day.
6.
CLOCK DISPLAY
8
The clock display shows the current time.
When reading or programming the schedule timer, the clock
display shows the action time.
7.
SCHEDULE TIMER ICON
p
This icon indicates that the schedule timer is enabled.
8.
ACTION ICONS
q
These icons indicate the programming actions for each day of
the schedule timer.
9.
OFF ICON
x
This icon indicates that the OFF action is selected when
programming the schedule timer.
10.
INSPECTION REQUIRED
k
and
l
These icons indicate that inspection is required on the
installation. Consult your dealer.
11.
SET TEMPERATURE DISPLAY
9
The display shows the current set temperature of the
installation.
12.
SETTING
$
Not used. For installation purposes only.
13.
NOT AVAILABLE
n
This icon is displayed whenever a non-installed option is
addressed or a function is not available.
14.
DEFROST/STARTUP MODE ICON
d
This icon indicates that the defrost/startup mode is active.
15.
COMPRESSOR ICON
ç
This icon indicates that the compressor in the unit is active.
16.
BACKUP HEATER STEP ONE
(
OR STEP TWO
§
These icons indicate that the backup heater of the unit is
operating, when there is a high demand for heating capacity.
The backup heater provides extra heating capacity in case of
low ambient outdoor temperature (high heating load).
17.
BOOSTER HEATER ICON
m
This icon indicates that the booster heater is active. The booster
heater provides auxiliary heating for the domestic hot water
tank.
The booster heater is located in the domestic hot water tank.
The icon is not used when the domestic hot water tank is not
installed.
18.
PUMP ICON
é
This icon indicates that the circulation pump is active.
19.
OUTDOOR TEMPERATURE DISPLAY
u
When this icon is flashing, the outdoor ambient temperature is
displayed.
20.
WEATHER DEPENDENT SET POINT ICON
a
This icon indicates that the controller will adapt the temperature
set point automatically, based on the outdoor ambient
temperature.
21. TEMPERATURE ICON
b
This icon is displayed when the water outlet temperature of the
unit, the outdoor ambient temperature and the domestic hot
water tank temperature are shown.
The icon is also displayed when the temperature set point is set
in schedule timer programming mode.
22. TEST OPERATION ICON
t
This icon indicates that the unit runs in test mode. Refer to the
installation manual.
23. FIELD SET CODE
;
This code represents the code from the field set list. Refer to the
installation manual.
24. ERROR CODE
:
This code refers to the error code list and is for service purposes
only. Refer to the installation manual.
25. SPACE HEATING/COOLING BUTTON
=
This button allows manual switching between cooling or heating
mode (provided the unit is not a heating only unit).
When the unit is connected with an external room thermostat,
this button is not operable and the icon
e
is shown.
NOTE
Remark that pushing the
y
button has no influence
on the domestic water heating. Domestic water
heating is only switched on or off by means of the
v
button.
1
17
3
5
6
24
8
13
25
26
11
19
21
14
4
7
9
12
10
22
34
27
28
23
20
33
32
31
29
30
2
16
18
15
