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4 Temperature sensor calibration
4
Temperature sensor
calibration
Both the internal temperature sensor of the room thermostat and the
(optional) external temperature sensor can be calibrated. It is
recommended to calibrate the sensor(s) after installation. The
procedure is the same for both the internal temperature sensor and
the optional external temperature sensor.
4.1
To calibrate the temperature
sensor
1 Using a thermometer, measure the temperature in the room at
1.5 m distance from the floor for at least 1 hour.
2 Press and hold
on the room thermostat for 5 seconds to
enter the user menu.
3 Use to navigation keys to select AirC or AMbC parameter,
depending on whether you want to calibrate the internal or
(optional) external temperature sensor.
4 Press OK to modify the selected parameter. By default it is set
to "no".
5 Use
and
to enter the measured value.
6 Press OK to confirm.
Result: The message "yes" is displayed and the value is stored in
the internal memory of the room thermostat.
If needed, the stored calibration value can be erased by pressing
The message "no" will be displayed, confirming the value has been
erased.
5
Maintenance
5.1
Maintenance safety precautions
WARNING
Before carrying out any maintenance or repair activities,
stop system operation with the room thermostat, and turn
off
the
power
supply
consequence: electrical shock or injury.
NOTICE
To clean the room thermostat, do NOT use organic
solvents, such as paint thinner. Possible consequence:
damage, electrical shock, or fire.
WARNING
Do
NOT
wash
the
consequence: electric leakage, electrical shock, or fire.
INFORMATION
When the dirt on the surface cannot be removed easily
while cleaning the room thermostat, soak the cloth in
neutral detergent diluted with water, squeeze the cloth
tightly, and clean the surface. Afterwards, wipe dry with a
dry cloth.
5.2
To clean the user interface
1 Wipe the screen and other surface parts of the user interface
with a dry cloth.
Operation manual
8
circuit
breaker.
Possible
room
thermostat.
Possible
5.3
To replace the batteries
When
blinks on the room thermostat display, the batteries of the
room thermostat need to be replaced. Once the battery indicator
starts blinking, the room thermostat will still be able to function for
±30 days before completely shutting down.
1 Open the battery compartments on both sides of the room
thermostat.
2 Remove the old batteries.
3 Insert new batteries.
4 Close the battery compartments.
Result: The room thermostat is ready for use.
INFORMATION
After replacing the batteries, date and time have to be set
again. See
"3.1.1 To set date and
information.
6
Troubleshooting
If one of the following malfunctions occur, take the measures shown
below and contact your dealer.
The system MUST be repaired by a qualified service person.
If the system does NOT operate properly except for the above
mentioned cases and none of the above mentioned malfunctions is
.
evident, investigate the system in accordance with the following
procedures.
Malfunction
The thermostat display
is blank and the
thermostat is not
working.
The room thermostat
buttons do not react
when pressed.
The room thermostat
does not initiate cooling
or heating demand
according to the
setpoint.
The room temperature
does not match the
setpoint set on the
room thermostat.
The schedule timer
starts up too early.
The time and date are
flashing on the room
thermostat display.
time" [ 4 3] for more
Measure
▪ Check whether the battery insulators
have been removed from the battery
compartments.
▪ Check whether the orientation of the
batteries in the compartments is correct.
▪ Check the battery capacity and replace
the batteries if necessary.
Check whether key lock functionality is
enabled. If
is visible on the display,
press
and
simultaneously to unlock
the room thermostat again.
▪ Check whether the dew prevention
function is active.
▪ Check if the receiver is in automatic
mode and not in a manal mode by
verifying that the push button LED on the
receiver is OFF and not green.
▪ Recalibrate
the
room
temperature sensor (or the external
temperature sensor).See the installation
manual for the calibration procedure.
▪ Contact your installer.
▪ Check whether the correct program is
selected (P1-P9 or U1-U4).
▪ Check whether parameter 07 is enabled
in the user menu.
Set the clock as described in
"3.1 Date and
time" [ 4 3].
EKRTRB+EKRTETS
Room thermostat
4P677096-1 – 2021.10
thermostat
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