5
For hot water installations, it is recommended to activate the pump at least 15 second every 24 hours
in order to avoid any seizing. Select PP will activate pump protection mode. Select OO will cancel the
function. When thermostat activating the pump,
○
15
in the display will blink.
2.
Manual Operation
1)
Anti-freezing mode
You can press power button
①
to activate the anti-freezing mode. The unit only displays Clock time,
Weekday and Room temperature. The default set temperature for anti-freezing mode is 5
℃
. During
anti-freezing mode, if room temperature decrease to 5
℃
, the unit will activate the heating system till room
temperature reach to 9
℃
. For hot water installations, if PP had been selected (See Configuration menu
item 6), the unit will activate the pump at least 15 seconds every 24 hours in order to avoid any seizing.
Press power button
①
again will terminate the anti-freezing mode and return to normal operation mode.
2)
Program operation and Hold temperature operation
Momentarily press
④
shift between program operation and hold temperature operation.
Prog
running
shows when thermostat is in program operation. Thermostat controls the heating system by
presetting program. See
Planning your program
section.
Hold
shows when thermostat is in hold
temperature operation.
The thermostat will hold the room temperature at the selected setting
3)
Temperature override
During program operation, Press
▲、▼
until the temperature you want is displayed. The thermostat will
override the current programming and keep the room temperature at the selected temperature until the next
program period begins. Then the thermostat will automatically revert to the program.
4)
Vacation Temperature hold
C
ontinue pressing button
③
over 3 seconds until display will show Vacation indicates you have now
entered into vacation hold
，
Use time key
②
or
③
to select the number of the days (from 1 to 99 days)
during your vacation.
，
you can use
▲、▼
to adjust the temperature during your holiday. Push button
④
to revert to program operation.
。
5)
Reset operation
If the display is abnormal, press the Reset button by using a fine probe such as a straightened paper
clip to gently push the Rest button. This will reset the thermostat.
3.
Set current day and time
1)
Press
②
button. The display will show the hour flashing.
2)
Press and hold either
▲、▼
until you reach the correct hour and AM/PM designation.(AM begins at
night, PM begins at noon)
3)
Press
②
button once again. The display will only show minutes flashing
4)
Press and hold either
▲、▼
until you reach the correct minutes
5)
Press
②
button once again. The display will show the day of the week flashing.
6)
Press
▲、▼
until you reach the correct day of the week
Press button
④
once. The display will show the correct day of the week and the time. If no keys
are pressed within 20 seconds, the thermostat will revert to program operation.
4
．
Planning your program
Look at the factory preprogrammed times and temperatures shown in the sample schedule. If this
program will suit your needs, simply press the
④
button to begin running the factory preset program.
Summary of Contents for 908WHB-3
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