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3 Operation
To enable timer mode
Prerequisite: The room thermostat is in timer mode.
1 Use
and
to set the duration of the timer in hours (H) and/
or days (d).
INFORMATION
By default, all user-defined programs (U1~U4) follow the
default reduced mode setpoints for every day of the week.
2 Press
.
3 Use
and
to adjust the desired temperature setpoint
4 Press
.
Result: The timer starts and the temperature setpoint is maintained
for the programmed duration of the timer. The remaining time is
displayed and
blinks to indicate that timer mode is enabled. The
room thermostat will return to the mode it was previously in when the
timer ends.
To disable the timer before the end, press
"no", or simply use
or
to select a different operation mode,
interrupting the timer.
3.2.7
Holiday mode
Holiday mode allows you to to set a fixed temperature setpoint (anti-
freeze temperature) during a long period of absence. The default
value is 10°C, but can be set anywhere between 0.5°C and 10°C (in
steps of 0.5°C).
INFORMATION
The temperature setpoint in holiday mode is NOT equal to
the integrated frost protection in OFF mode, which is a
fixed 4°C.
INFORMATION
In cooling mode, this mode acts as OFF mode.
To enable holiday mode
Prerequisite: Parameter 06 (HG) is set to the desired anti-freeze
temperature in the user menu. See
menu" [ 4 7] for more information.
the user
Prerequisite: The room thermostat is in holiday mode.
1 Use
and
to set the duration in days (d).
INFORMATION
By default, all user-defined programs (U1~U4) follow the
default reduced mode setpoints for every day of the week.
2 Press
.
Result: The anti-freeze temperature is maintained for the
programmed duration. The number of days left is displayed and
blinks to indicate that holiday mode is enabled. The room thermostat
will return to the mode it was in previously when the duration ends.
To disable holiday mode before the end of the duration, press
set the duration to "no".
3.2.8
Reversible mode
INFORMATION
Reversible mode is ONLY applicable to installations with
reversible units.
Operation manual
6
to set the duration to
"3.4.2 To modify parameters in
to
Reversible mode allows you to quickly select the operation mode
(cooling/heating) of your reversible unit. To make use of reversible
mode, it must be enabled in the installer settings first. For more
information, see
"To enable reversible
To change the unit operation mode
Prerequisite: Reversible mode is selected on the room thermostat.
1 Press
or
.
Result: The currently selected unit operation mode blinks.
2 Select the desired unit operation mode using
Room thermostat display
Hot
Cld
3 Press
to confirm.
Result: The unit operation mode is set. The
(cooling) or red (heating), depending on the selected mode.
Once the unit operation mode has been set, you can return to the
mode the thermostat was in before by pressing
press
or
.
To enable reversible mode
1 Press and hold
for 5 seconds.
Result: You are in the installer menu.
2 Use
and
to select parameter 21 (MOde).
3 Use
and
to set the parameter value to "rEv".
4 Press
to confirm the parameter value.
Result: Reversible mode is activated.
3.3
Other functionality
3.3.1
Button lock
This function locks the room thermostat buttons, preventing
accidental changes to setpoints or other settings. This is useful when
the room thermostat is used in public areas or in children rooms, for
example. When button lock is active,
the room thermostat display.
To enable or disable button lock
1 Press
and
simultaneously.
Result: The button lock indicator
thermostat display. The room thermostat buttons are locked.
2 To disable button lock again, press
again.
Result: The button lock indicator
the room thermostat buttons are unlocked.
3.3.2
Open window function
If enabled, this function is able to stop heating operation whenever
the room thermostat detects unusual temperature drops (usually due
to an open window or door). This function is enabled by default.
If the measured temperature decreases by 3°C or more during a
period of 5 minutes or less, the thermostat will stop all heating
operation for 15 minutes. If the temperature keeps dropping after this
initial period, the room thermostat will continue to cease all heating
operation. Whenever the room thermostat is stopping heating
operation, the temperature on the room thermostat display blinks. It
is possible to manually override the open window function by
pressing
. Once overridden, the temperature no longer blinks.
mode" [ 4 6].
or
.
Unit operation mode
Heating
Cooling
LED lights up green
. Alternatively,
is permanently visible on
appears on the room
and
simultaneously
disappears from the display and
EKRTRB+EKRTETS
Room thermostat
4P677096-1 – 2021.10
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