Daikin EKRTW User manual

OPERATION MANUAL
Room thermostat
EKRTW

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EKRTW
Room thermostat
4PW44897-1
Operation manual
1
WARNINGS
■ Never let the thermostat get wet, this may cause an electric
shock or fire.
■ Never press the buttons of the thermostat with a hard,
pointed object. The thermostat may be damaged.
■ Never inspect or service the thermostat yourself, ask a
qualified service person to do this.
Contents
1. Main features.......................................................................... 2
2. Buttons on front cover and LCD.............................................3
3. Getting started ....................................................................... 5
4. Description of the function modes and menus....................... 6
5. Using the thermostat..............................................................7
6. Setting up codes in the user menu....................................... 12
7. Troubleshooting .................................................................... 15
8. Maintenance......................................................................... 16
9. APPENDIX: factory-defined programs ................................. 17
EKRTW Room thermostat Operation manual
THANK YOU FOR PURCHASING THIS THERMOSTAT.
READ THE MANUAL ATTENTIVELY BEFORE USING
THE INSTALLATION. AFTER READING THE MANUAL,
STORE IT IN A SAFE PLACE FOR FUTURE USE.

Operation manual
2
EKRTW
Room thermostat
4PW44897-1
1. Main features
The EKRTW is a state of the art programmable electronic
thermostat, which regulates your AD
system, where comfort, simplicity and energy saving go hand in
hand. It is the wired room thermostat option kit, mainly used for
new installations.
The main features are:
■ Room temperature control, based on the measurements of
the internal sensor.
■ Cooling and heating mode (with possibility to disable cooling
function if not required).
■ Off function (with integrated frost protection).
■ Comfort and reduced function modes, using the comfort and
reduced setpoint respectively.
■ Holiday function mode.
■ Weekly schedule timer with 2 custom (
◊1
+
◊2
) and 5
predefined (
π1
~
π5
) schedules.
- The predefined schedules use the comfort and reduced
setpoints of the comfort or reduced function mode.
- The custom schedules use independent, programmed
setpoints (up to 12 setpoints per day).
-You can lock the schedule timer which allows a temporary
override with the comfort or reduced setpoint by means of
a single key push.
- It is possible to link a custom schedule to cooling and
heating mode.
- Comfort startup control. The schedule timer will
automatically start up in advance, trying to reach the
programmed setpoint at the programmed time.
■ Clock (with day and month).
■ Key lock function.
■ Automatic daylight saving time change.
■ Setpoint limitation. Your installer has the possibility to modify
the lower and upper limit of the setpoints. Refer to “Setting
up codes in the installer menu” (code
6® 12
+
6® 13
) in the
installation manual.

EKRTW
Room thermostat
4PW44897-1
Operation manual
3
2. Buttons on front cover and LCD
Refer to figure 1 at the inside of the front cover.
Refer to figure 2 at the inside of the front cover.
1
Left and right buttons (
<
and
>
). Used to select
modes.
2
Up and down buttons (
+
or
-
). Used to change
values.
3
OK - Schedule timer button (
=
).
Used to:
- confirm setpoints or save selections
- enable/disable locked schedule timer
4
LCD
1
Cooling/heating mode selection
2
Comfort function mode
3
Schedule timer function mode
4
Reduced function mode
5
OFF function mode (with integrated frost protection)
6
Holiday function mode
7
Schedule timer setting menu
8
Date and clock setting menu
9
Manual override of scheduled mode
10
Day of the week
11
Error occurred: intervention needed
12
Active user or installation menu or error occurred. Refer
to "Troubleshooting" on page 15.
13
Selected program (schedule timer) or code
14
Room temperature or setpoint (when flashing)
15
Thermostat ON (heating or cooling requested)
16
AM - PM indication
17
Room temperature symbol
18
Degrees type indication (°C or °F)

Operation manual
4
EKRTW
Room thermostat
4PW44897-1
19
When manually overriding a schedule or when consulting
the active scheduled setpoints by pressing
+
or
-
,
the current and next setpoint together with the starting
hour of the next action are displayed.
•
t
is shown in case the next action setpoint goes up.
•
u
is shown in case the next action setpoint goes down.
•
tu
is shown in case the setpoints are equal.
20
Actual time
21
“Low batteries” indication
22
Key lock function
23
Next scheduled temperature setpoint

EKRTW
Room thermostat
4PW44897-1
Operation manual
5
3. Getting started
3.1. Setting the clock and date
After installation you first need to set the clock before you can
actually use the thermostat.
1 Activate the advanced mode by pressing
>
during 5
seconds in OFF mode (
D
).
Refer also to "Description of the function modes and menus"
on page 6.
2 Navigate to the date and clock setting menu (
G
) by pressing
>
and then press
=
.
3 Set the hour, minutes, day of the week (
&
= Monday,
I
= Tuesday,...), day, month and year by pressing
+
or
-
and confirm each time by pressing
=
.
The value that you modify flashes.
3.2. Setting the desired mode: heating or cooling
1 Press
<
to go to comfort mode (
A
).
2 Press
<
during 5 seconds to go to the heating/cooling
selection mode.
3 Press
<
or
>
to switch to the desired mode.
O
or
P
is flashing.
4 Press
=
to save your selection.
The thermostat returns to the schedule timer mode (
B ).
3.3. Setting the desired setpoint
1 Navigate to the comfort mode A by pressing < or > to
set the comfort setpoint.
Refer also to "Description of the function modes and menus"
on page 6.
2 Raise or drop the setpoint by pressing
+
or
-
.
The current setpoint flashes.
3 Press
=
to save your settings.
The room temperature is displayed (
R
).
NOTE
This is only possible if cooling mode is available.

Operation manual
6
EKRTW
Room thermostat
4PW44897-1
4. Description of the function modes and menus
4.1. Modes in the standard menu
A B C D
Press
<
or
>
to switch to the desired mode.
The
z
cursor will move.
4.2. Modes and menus in the advanced menu E F G
To activate advanced modes, navigate to OFF mode (
D
) and
press
>
during 5 seconds.
Icon Description
A
Comfort mode. Use this mode for a fixed temperature
on comfort level (comfort setpoint default on 21.0°C in
heating mode, 24.0°C in cooling mode).
B
Schedule timer mode. Use this mode to let your
installation be controlled by the schedule timer. The
actions programmed in the schedule timer will be
executed automatically according to the actual time.
This function mode uses the scheduled temperature
setpoint.
The functionality of the locked/unlocked schedule timer
mode is explained in "Manually overriding a schedule"
on page 8.
It is advised to lock the schedule timer mode by pressing
=
. A line will appear underneath the icon (
S
).
C
Reduced mode. Use this mode for a fixed temperature
on reduced level (reduced setpoint default on 17.0°C in
heating mode, 28°C in cooling mode).
D
OFF mode. Use this mode to switch off your installation.
Integrated frost protection remains activated (frost
protection default on 4.0°C).
Icon Description
E
Holiday mode. Use this mode to set a fixed temperature
during a long absence. To exit the holiday mode, set the
duration to "
?
". Refer to "Using the holiday mode" on
page 11.
F
Schedule timer setting menu. Use this menu to choose
a factory-defined schedule or create a custom one.
G
Date and clock setting menu. Use this menu to set
date and time.

EKRTW
Room thermostat
4PW44897-1
Operation manual
7
5. Using the thermostat
5.1. Using the key lock function
k
Activate or deactivate the key lock function by pressing
+
and
-
at the same time.
5.2. Activating the schedule timer
For full comfort with limitation of energy consumption you can
pick an ideal schedule for each day. This makes sure the
temperature is in the comfort mode when you are at home and
that the temperature is automatically reduced at times you are
sleeping, at work and so on.
1 If needed, activate the advanced mode by pressing
>
during 5 seconds in OFF mode (
D
).
2 Navigate to the Schedule timer setting menu (
F
) by
pressing
> .
3 Select the desired schedule by pressing
+
or
-
.
When pressing
+
the next schedule is shown. When
pressing
-
the previous schedule is shown.
The possible schedules are: 2 user-defined (
◊1
+
◊2
) and 5
factory-defined (
π1
~
π5
).
The factory-defined schedules are described in "APPENDIX:
factory-defined programs" on page 17. For the user-defined
schedules, refer to "Setting up a user-defined schedule" on
page 9.
4 Activate the selected schedule by pressing
=.
Press < to exit the schedule.
Press
+
and
-
to consult the programmed actions,
press
>
and
<
to consult the other days (if already
programmed).
5Navigate to the schedule timer function mode (B) by
pressing <.
6Optionally, press =to lock the schedule timer mode (S).
NOTE For your optimum comfort, the schedule timer can
be set to start up in advance (120 minutes, code
2® 02, for 4.0°C setpoint difference), trying to reach
the programmed setpoint at the programmed time.
This control can be enabled or disabled by means of
code 2® 01 in the user menu. Refer to "Setting up
codes in the user menu" on page 12.

Operation manual
8
EKRTW
Room thermostat
4PW44897-1
5.3. Manually overriding a schedule
There are 2 ways of overriding a schedule:
■A temporary override in locked schedule timer mode (SS
SS)
Temporarily choose the comfort or reduced setpoint by
pressing 1 button only: <or >. The cursor “Y” will
move.
• comfort setpoint: q and h are displayed.
• reduced setpoint: w and h are displayed.
■A temporary override of the setpoint in schedule timer
mode
Press +or -to modify the setpoint in steps of 0.5°C.
Save a new, manual setpoint by pressing =or by waiting 5
seconds.
h is displayed.
Locking and unlocking the schedule timer mode is performed by
pressing =. The locked schedule timer mode displays as S.
The unlocked schedule timer mode displays as B.
NOTE By default the manual override is active until the next
scheduled action. You can change this behavior by
means of user code 2® 03: the manual override will
then only be active for 1 hour. Refer to "Setting up
codes in the user menu" on page 12.