OPTIMA W R2 PLUS THERMOSTAT
Optima W PLUS is a development of DIHS BV, NETHERLANDS. www.dihsbv.nl
Parameter Settings Explained
Feature 01–
This feature used to calibrate the room temperature when need. For example, if actual
room temperature 21.5°C, but thermostat shows 23°C, then you can set this value to -1.5 to calibrate.
Feature 02/03–
Temperature Max.& Min. Limit: This function allows you to limit the use of the up and
down temperature by pr/- buttons.
Menu 05 -
Low Temperature Protection: This is the temperature maintained when the thermostat is in
Frost Mode. If room temperature below 5°C(Settable), thermostat will turn on heating device till room
temperature arrive 5°C(Settable).
Menu 09 -
Switching Differential: This function allows you to increase the switching differential of the
thermostat. The default is 0°C which means that with a set temperature of 20°C, the thermostat will
switch the heating on at 19.5°C and off at 20.5°C. With a 0.5°C differential, the heating will switch on at
19°C and off at 21°C.
Menu 11–
This feature used to lock the keys. When lock, you can long press
SET
button to unlock.
Menu 12-
This function allows you to save energy. When enable Open Window Detection function, the
system will automatically stop heating when it detects a sudden drop of room temperature (2°C in 15
minutes as default). This is normally caused when a window or door is opened without turning off the
heating device.
The device will return to the previous mode of operation after 30mins, then letter
OP
disappear. Press
any button will exit OWD function during the heating off period.
Menu 13-
The setting time to detect the drop of room temperature between 2-15mins (15 mins is the
default setting).
Menu 14-
The drop temperature to during detect period. Setting between 2-4°C (2°C is the default
setting).
Menu 15-
The time to exit OWD mode select. Setting between 10~60min(30min is the default setting).
12
Open window detect function
1: Enable 0: Disable
0
13
OWD Detect Time
2~30mins
15mins
14
OWD Drop temp. select
（
within detect time
）
2.3.4’C
2 ‘C
15
OWD Delay time select
(Return to previous working status)
10~60min
30mins
17
Factory reset
0: No
0
1: Yes, and then press
On/off button for 5s,wait
until thermostat restart
18
Software version
