EUROSTER 4010
–
INSTALLATION AND OPERATION MANUAL
4
If you want to set a set temperature between 18
°C
and 23
°C
, you must set the "LO"
value to 18
°C and the "HI"
value to 23
°C
.
•
Hysteresis/PWM (H)
Two operational options of activating the heating algorithm are available: hysteresis or
PWM.
In the case of hysteresis, the device is activated based only on a difference between the
preset and current temperature. The parameter determines the accuracy of room
temperature control. You may set the hysteresis between 0.2
°C and 10
°C, and the
factory setting is 0.4
°C.
Setting the value to 0.0 will put the thermostat into PWM mode.
PWM is a more advanced method to achieve the preset temperature. It is suited for
systems with underfloor water heating. It is used to limit room temperature fluctuations.
Unlike in on/off controls the current status of the transmitter depends not only on the
current difference between the preset and measured temperature but also on the past
changes of temperature. PWM operates with fixed parameters:
✓
Minimum relay activation time of 3 minutes,
✓
Number of cycles per hour - 4
✓
Operating range of the PWM algorithm of 0.7
°C.
•
Temperature sensor correction (C)
It is a value added to or subtracted from the measured temperature value. It adjusts
the displayed temperature within the range of +/- 5
°C. The function is convenient if
the thermostat is located in a slightly warmer or cooler area of the room.
•
Reset (rEs)
When you change the value from 0 to 1, the thermostat restores factory settings.
•
Exit (ESC)
Press the central button to make the thermostat exit the service mode.
Exit the menu at any time by pressing the left "
” button of the knob.
6.
SETTING TEMPERATURE
Use “
” and “
” buttons to set the desired temperature value. Pressing one of the buttons for
the first time turns on the backlight and repeated pressing adequately decreases or increases
the temperature value with 0.1
°C step of the change. Th
e longer the button remains pressed,
the quicker the values change. Confirm the temperature change with the central button or wait
until the set value stops flashing and is stored. The factory setting is 20
°C.
7.
TEST MODE (tSt)
In the test mode, you may check the main parameters of the thermostat. In order to enter the
test mode press and hold the
central and “ ” button for approximately 2 seconds.
The following tests are available:
•
internal sensor temperature measurement
•
relay test - press the
lower “ ” button repeatedly to switch the relay on/off,
•
backlight test
–
press the upper “ ” button repeatedly to switch the backlight on/off
8.
SWITCHING THE THERMOSTAT OFF
When the switch is moved, the thermostat goes into the frost protection mode. icon appears
on the display. Frost protection ensures that the heating is turned on only to prevent
temperature dropping below 4°C.
9.
ERROR INDICATION
OP
–
sensor missing or damaged
SH
–
short-circuit of the sensor or a damaged sensor
Err 1
–
internal error, remove and after a few moments reinstall the batteries
–
discharged batteries icon.