Smart Wifi Multi Stage Thermostat
Reference No.:
HTW-81-FN7WF Series
5/7
Auto:
In this state, a constant temperature will be kept. Device will activate/ stop heating/cooling system automatically according to
the setting and room temperature.
Conventional system
Heat
Room temp.≤Setting temp.-1
℃
“Heat on” displays and 1st stage heating system is on;
Room temp.≤Setting temp.-2
℃
“Heat on”& “AUX” display and 2
nd
stage heating system is on;
(not available for 1 stage heat
system)
Room temp.≥Setting temp., heating system stops and “Heat on” disappears from screen.
Note: 2
nd
heat stops and “AUX” disappears when temp. difference is less than 1
.
℃
Cool
Room temp.≥ Setting temp.+1
℃
“Cool on” displays and 1
st
stage cooling system is on;
Room temp.≥ Setting temp.+2
℃
“Cool on” stays and 2
nd
stage cooling system is on ;
(not available for 1 stage cool system)
Room temp.≤ Setting temp., cooling system stops and “Cool on” disappears from screen.
Note:
2
nd
cool stops when temp. difference is less than 1
.
℃
Heat pump system
Heat
(Changeover valve keep closed)
Room temp.≤Setting temp.-1
℃
“Heat on” displays and 1
st
stage heating system is on;
Room temp.≤Setting temp.-2
℃
“Heat on” stays and 2
nd
stage heating system is on;
Room temp.≤Setting temp.-3
℃
“Heat on”& “AUX” display and Aux heating system is on;
Room temp.≥Setting temp., heating system stops and “Heat on” disappears from screen.
Note: Aux heat stops and “AUX” disappears when temp. difference is less than 2
.
℃
2
nd
heat stops when temp. difference is less
than 1
℃
Cool
(Changeover valve keep open)
Room temp.≥ Setting temp.+1
,
℃
“Cool on” displays and 1
st
stage cooling system is on;
Room temp.≥ Setting temp.+2
,
℃
“Cool on” stays and 2
nd
stage cooling system is on;
Room temp.≤ Setting temp., cooling system stops and “Cool on” disappears from screen.
Note:
2
nd
cool stops when temp. difference is less than 1
℃
Compressor protection
After an operation of heating/cooling system, there is a 1 min compressor off time to protect compressor. “Wait” will display on
the screen if next operation is activated within the 1 min period.
Fan mode setting
Press
to switch among “Fan on & Fan Auto”.
Fan on
：
Fan is always on.
Fan Auto
：
Fan runs automatically only when heating/cooling system is on.
(If system is in
OFF
state, the fan will always off)
Mode setting
Press
F
to switch among “
Schedule
,
Hold
&
Hold Until
(Holiday)” modes.
Programmable Schedule(Programming)
Any icon from
stands for one time period, and there are 4 periods can be set in one day. Under the time setting
mode, press
to enter into time setting interface, the time parameter of cooling or heating mode can be set. Press
then
switch among
7 days
→
5+2 days
→
a whole week: [
MON→TUE→WED→THU→FRI→SAT→SUN→
（
MON TUE WED THU
FRI
）
→
（
SAT SUN
）
→
（
MON TUE WED THU FRI SAT SUN
）
].
When setting the parameters, press F to exit to the modify interface, then get back to the temperature setting interface.
1.Press
then press
or
to change the flashing
hour
,
minute
&
temperature
value of the chosen day and time period
(changes in 15 minutes at a time);
