To Modify the Program Settings:
1. Press [PROG], all 4 event icons and day icon
representing the program number start flashing,
indicates that is the program setting mode. Time and
temperature digits become blank.
2. Use [▲] / [▼] to select the program to be changed.
3. Press [PROG] to advance to set the WAKE time, hour
and minute digits will flash. Minute is set in step of 10
minutes. Press [TIME] to set program On or Off for
each event, the display will “ --:-- ” when it is off.
4. Press [PROG] to set the Heat temperature.
Temperature and “HEAT” icon starts flashing.
Temperature is set in step of 1 °F / 0.5 °C
5. Press [PROG] to set the Cool temperature.
6. Press [PROG] to continue setting the next three
events. Repeat step 3 – 5, when all programming is
finished, the operation will return to step 1.
7. Select the next program to be modified, or press [RUN]
to exit.
To Copy a Program
1. At normal mode, press [PROG], all 4 event icons and
the day icon representing the program number start
flashing, indicates that is the program setting mode.
2. Use [▲] / [▼] keys to select the program to be copied,
then press [Usage].
3. The program number and all 4 event icons stay on.
The program number next to the program number to
be copied starts flashing. Time and temperature
digits will show “COPY tO”.
4. Use [▲] / [▼] keys to select the program to be written
on, then press [Usage]. The operation will resume to
step 1 after the program is copied.
5. If [Usage] key is accidentally pressed during
programming, press [PROG] will back to program
setting mode.
Reading the Setting Temperature
1. At normal mode, when the System slide switch is at
the Heat position, press [TEMP] will display the Heat
Setting Temperature for 10 seconds, all system icons
will momentarily turn off, except “HEAT” icon turns on.
After 10 seconds, the display will resume to show
Room Temperature.
2. If the System slide switch is at the Cool position, press
[TEMP] will show the Cool Setting Temperature
instead. All system icons will momentarily turn off,
except “COOL” icon turns on.
Temporary Program Override
1. When program is On, the program set-point can be
temporary overrode by pressing [▲] / [▼].
“OVERRIDE” icon will turn on. If the System slide
switch is at Heat position, Heat set-point and “HEAT”
icon will start flashing; while if the System slide switch
is at Cool, Cool set-point and “COOL” icon will start
flashing. There is no reaction if System switch is at
OFF mode.
2. Use [▲] / [▼] keys to adjust. Press [RUN] to confirm.
3. Temporary Program Override will be cancelled
automatically when the next event’s time is met; Or it
can be manually released by pressing [PROG] normal
mode.
Permanent Override
1. When Program is On, press and hold [PROG] for 2
seconds to permanently override the program.
“PERMANENT OVERRIDE” icon will be shown on the
display. “PROG ON” icon turns off.
2. To adjust the override set-point, press [▲] / [▼] keys,
Heat set-point and “HEAT” icon will start flashing if the
System slide switch is at Heat position; Cool set-point
and “COOL” icon will start flashing if System slide
switch is at Cool position. There is no reaction if the
System switch is at Off mode.
3. Use [▲] / [▼] keys to adjust, press [RUN] to confirm.
4. To switch back to Program mode, press and hold
[PROG] for 2 seconds. “PERMANENT OVERRIDE”
icon will disappear and “PROG ON” icon will switch
on.
Low Battery Indicator
When the battery power is running low, the warning icon
is shown on display. Insert fresh batteries and press
[RST] button on the front plate. Be sure main switch is at
the middle (OFF) position and fan switch is at the (FAN
AUTO) position.
Filter and System Usage Indicator
1. The thermostat can record the Filter Usage and
System Usage hours.
2. When the number of Filter Usage hours reach the set
interval time, “Filter” icon will be shown; While for
System Usage hours, “Usage” icon will be shown.
3. Filter Usage counts when the Fan is On; System
Usage counts when either Heat or Cool is On.
4. To read the Usage hours, press [USAGE], “Filter” icon
is shown on the display, the number of Filter Usage
hours is shown on the time digits
5. Press [USAGE], “Usage” icon is shown on the display,
the number of System Usage hours is shown on the
time digits.
6. After 10 seconds, the operation will resume to display
the time
Adjusting the Filter and System Usage Interval Time
1. Press and hold [USAGE] for 2 seconds, “Filter” icon
and the Filter Usage interval time (default: 700 hours)
will flash on the screen.
2. Use [▲] / [▼] keys to modify the interval time. The
interval time is set in step of 100 hours, range from
0-5000 hours.
3. Press [USAGE] to continue, “Usage” icon and System
Usage interval time (default: 2000 hours) will flash on
the screen.
4. Use [▲] / [▼] keys to modify the interval time. The
interval time is set in step of 100 hours, range from
0-5000 hours.
5. Press [USAGE] to loop back to Filter Usage setting;
Press [RUN] to confirm setting and resume to normal
operation.
6. Filter and System Usage function can be disabled by
setting the interval time to 0 hour.
To Clear the Filter and System Usage Counter
1. To read the Usage hours, press [USAGE], “Filter” icon
is shown on the display, the number of Filter Usage
hours is shown on the time digits.
2. Press and hold [▲] and [▼] for 2 seconds, the filter
usage counter will be cleared.
3. When “Usage” icon is shown on the display, the
number of System Usage hours is shown on the time
digits.
4. Press and hold [▲] and [▼] for 2 seconds, the system
usage counter will be cleared.
Temperature Control
LCD display “LO” when room temperature is below 32 °F
/ 0 °C
LCD display “HI” when room temperature is above 99 °F
/ 40 °C
First stage activation is indicated by “HEAT
” icon or
“COOL
” icon.
Defrost Function
When the room temperature falls to 40°F / 5°C or below,
heater will be On, regardless of the set-point.
“DEFROST” icon will be shown on the display.
Adjusting Temperature Control Span
1. Press and hold [TEMP] for 2 seconds, “P1” (default) is
flashing at the time digits.
2. Use [▲] / [▼] keys to select .
3. Press [RUN] to confirm new control span
