Reviewing programs, Backlighting, Wiring diagrams – Comfort Stat CP1919 User Manual

Page 2: Troubleshooting

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HOLD

CLEAR

HOLD

CLEAR

HOLD

CLEAR

HOUR

DAY

FOR WINTER

NUMBER PROGRAM

PROGRAM
2

PROGRAM
3

PROGRAM
4

MONDAY TIME

TEMP

TIME
TEMP

TUESDAY TIME

TEMP

TIME
TEMP

WEDNESD
AY

TIME
TEMP

THURSDAY TIME

TEMP

TIME
TEMP

FRIDAY TIME

TEMP

TIME
TEMP

SATURDAY TIME

TEMP

TIME
TEMP

SUNDAY TIME

TEMP

TIME
TEMP

FOR SUMMER

NUMBER PROGRAM

PROGRAM
2

PROGRAM
3

PROGRAM
4

MONDAY TIME

TEMP

TIME
TEMP

TUESDAY TIME

TEMP

TIME
TEMP

WEDNESD
AY

TIME
TEMP

THURSDAY TIME

TEMP

TIME
TEMP

FRIDAY TIME

TEMP

TIME
TEMP

SATURDAY TIME

TEMP

TIME
TEMP

SUNDAY TIME

TEMP

TIME
TEMP

Programming Your Thermostat

Your thermostat can be programmed in two different ways.
1. Auto-program method 2. Manual method
Before programming, position the HEAT/OFF/COOL selector to be programmed.

Auto Programming

Studies conducted by the Department of Energy estimate that setting your
thermostat back 10˚F (6

℃) for two 8-hour periods

during winter can reduce your

fuel bill by as much as much as 33%. By setting your thermostat up

˚F 3

℃) for tow 8

hour periods during summer you can reduce your fuel bill up to 25%.
Your thermostat is capable of holding up to 4 separate programs for each day of the
week. You can program all weekdays, Monday to Friday, to the same 4 programs as
show in the table, or each weekday can have a different set of 4 programs. Similarly
weekend programs, Saturday and Sunday, can be the same 4 programs or each
weekend day can have a different set of 4 programs.
our thermostat is pre-programmed guidelines for energy efficiency. Note that it is easier
to modify these programs than to programs than to program the thermostat manually.

■ Press once. During Auto Programming, the
display will change as shown.

■ The thermostat will be programmed for all 7

days

of the week as shown .below.

Temperature

˚F/

℃

Program Number

Time

Heat

Standard

1 6:00am

68 ˚F (20

℃)

78 ˚F (26

℃)

2 8:00am

60 ˚F (16

℃)

85 ˚F (29

℃)

3 4:00am

68 ˚F (20

℃)

78 ˚F (26

℃)

4 10:00am

60 ˚F (16

℃)

85 ˚F (29

℃)

■ Refer to Manual Programming entering or changing the programs.

Manual method
In this method, each program is inserted according to your personal programming
schedule.
Familiarize yourself with manual programming. The following example demonstrates the
manual programming method. You can program or change the program of weekdays,
weekends, or individual days.

Programming Your Thermostat (Continued)

NOTE:1) The program time is set in increments of 15 minutes.

2) The program temperature is set in increments of 1

℉.

3) When setting PM time, make sure the “PM” indicator appears on the display.
Press Display Reads
Weekday

■

Normal display of time, temperature,

Programs

and day of the week.

Step 1

■

Selects days M to F for same set of 4 programs

each day.

Step 2

■ Program indicator(1) is displayed.

■ 68

℉ is displayed.

■ M to F is displayed.

Step 3

■ Press and hold until 6:00 is displayed.

■ Note AM/PM

Press Display Reads
Step 4

■ Press once to change temperature to 69

℉

■

Weekday program 1 is complete.

■ Press PROG to move to program 2,3, and 4
and follow the same steps.

Use to insert or change time and temperature

of other programs.

Continue

■

Selects weekend days SA, SU for same

for

set of 2 programs each weekend

day.

Weekend

■ Follow steps 2-4 to enter programs.

Programs

Similar to weekday programming.

to insert weekend programs.

Individual Day Programming
To program for each individual day separately by a different set of programs, first select
day by displaying the day of program, then insert the desired times and temperatures.
Press Display Reads

■ M to F are selected. M to F will have

Some programs.

■ SA to SU will have

Some programs.

■ M is selected, program for M only.

Use to enter programs for Monday.

Similarly ■ T is selected.

■ W is selected.

Display the day to be programmed and use to the programs.

NOTE: Another approach to programming is to first program all weekdays M

through F and SA and SU as same programs. Then, display and change the

programs of only those days which will have different programs.

Reviewing Programs

You may want to review the programs to see that the settings are compatible with your
lifestyle.
Weekday
Program

■ Normal display of current time, day of week

temperature, and
.

■ 1st weekday program is displayed.
■ Program indicator(1) appears.
■ M to F indication appears.

Continue pressing to review programs.
NOTE: The temperatures you have entered will NOT take effect immediately, but at the next

program time change. The Thermostat is pre-set to 68

℉ in heat mode and 78℉ in cool mode.

If you want a temperature other than 68

℉ or 78℉ right away, you must use the

manual override feature described below to enter the temperature you want.

When you entered program becomes effective, the corresponding program

number will appear on the display.
After programming, confirm the new programs by pressing
If you are armchair programming the thermostat, before you mount the face of the
thermostat, turn the system selector to the OFF position.

Temporary Manual Override
To temporarily change the current set temperature without affecting your program:

Press and hold or for less than 1 second to
enter Manual Override mode..

Press and to change to your desired new temperature.

■Press to RUN to normal mode, or wait 15 seconds for it to return

automatically.

■The current program number will flash to signify the Temporary Override. At

the next program change, the Temporary Override, and the next program
temperature becomes the set point temperature. To end the Temporary
Manual Override:

■Press and wait for HOLD to display on the LCD.
■Press hold key. This will return the set temperature to the current program set
temperature.

NOTE

: The Auto Season Changeover feature will not operate while the thermostats is

in Temporary Manual Override .Refer to the Auto Season Changeover feature .
NOTE

; If the thermostat has not been programmed, then a Temporary Override

becomes a Permanent Override. See the next section for more information.

Programming Your Thermostat (Continued)

Permanent Override or a Designated Day Override

To hold your Manual Override for vacation or Until a Designated
Day
y

Press to make the current program temperature the HOLD

temperature. HOLD will be displayed on the LCD, and the Program number will

disappear.
y

Follow the Temporary Manual Override instructions above to change the

Permanent Manual Override temperature.

You can confirm the held set temperature by pressing for less than 1

second.
y

Press again. Hold day will be displayed on the lcd

and the clock will disappear

Press Day key to add override days. Press Program key to

reduce override days

Follow the Temporary a Designated Day Override instructions above to

change the Permanent Manual Override temperature.

To end Override:
y

Under Permanent Override Press hold/return key twice. Under a Designated Day

Override press the hold once. The thermostat will return to the current program, and the
HOLD display will be canceled.

NOTE: You can also return to the current

program by pressing “HOLD CLEAR” once

in permanent override mode.

Other Features

12Hr. / 24 Hr. Time Format

Your thermostat is set from the factory in normal 12 (AM/PM) time format. To

change to

24 hour (military) time, press during time and day setting mode to toggle
between the 12 hour and 24 hour formats. The AM / PM indicator will not be displayed
in 24 hour mode. Both the current time and all programs will automatically change to
the selected format.

Backlighting

Your thermostat has an electroluminescent lamp that backlights the display for easy
viewing in the dark.
When any key is pressed the display is illuminated.
The display will remain illuminated for 8 seconds after the last key is pressed. This
allows the light to stay on if you need to operate several keys.
Note: If the thermostat is in Low Battery warning condition, the backlight will not operate.
Replace with 2 new AA alkaline batteries to restore the Backlight function.

12/24 Hour Clock

The 12/24 hour switch is located on the printed circuit board inside the thermostat. Pressing
the 12/24 button alternates the clock between 12 or 24 hour (military) mode.

NOTE: Move system selector slide switch to “OFF” before removing thermostat from

wall and changing 12/24 hour clock mode.

Filter Monitor

Your thermostat also keeps a record of the number of hours your
filter has been in use. To maximize your system’s performance and
energy efficiency, change or clear your filter regularly.

When the total system run time for heat and cool reaches 400
hours, you to clean or change your system’s filter, “FILT” will
continue to flash until the counter is set back to zero.
■ Press to review total filter usage. The display will blink “FILT”

Then show the filter Monitor counter. After 15 seconds, the display will return

to normal

mode, or you can hit RUN to exit immediately.

The Filter Monitor will display up to 999 hours and 59 minutes of usage. In this example,

the counter is at 410 Hours, 26 minutes.

■ To reset the Filter Monitor counter, depress FILTER for 3 seconds. The display will

blink, and The counter will be reset to zero.

Auto Recovery
Auto Recovery calculates how early to turn you system back on, so that the room
temperature is already comfortable by the start of the comfort
temperature program period. Auto Recovery work’s in both Heat
and Cool modes.

When the thermostat is in Auto Recovery mode, the display will

alternate “RECO” with time, and the program indicator will flash.
y

Auto Recovery can be disabled by sliding the Recovery switch on the circuit board to

disable.
y

Auto Recovery will not operate if Permanent hold or Temporary hold is in operation.

Auto Recovery can be canceled manually if Hold/RETURN is pressed during the

recovery process.
y

Auto Recovery will be canceled and change to next period.

Details of Auto Recovery Operation:
■ Auto Recovery can be disabled by sliding the Recovery switch on the circuit board to
the ALT position.
■ Auto Recovery will not operate if Permanent hold, Temporary hold or Home Today is
in operation.
■ Auto Recovery can be canceled manually if HOLE/CLEAR is pressed during the
recovery process. If a recovery process is canceled manually then the recovery process
will not start again until the next program period starts (an exception is that if time or
program is changed then the thermostat will check Auto Recovery conditions
immediately).
■ Auto Recovery will be canceled and change to Home Today mode if HOME TODAY
is pressed during the recovery process.

Error Mode

If the thermostat is unable to control your system due to an
unexpected battery problem, the thermostat will enter Error Mode.
In this condition, the thermostat flashes “E1”or “E2”on the LCD
display, and shuts off your system. To correct this problem,
replace the batteries with 2 new AA alkaline batteries, even if you
have recently replaced them. Move the battery out hold any key
then place the battery again. You will need to reprogram your
thermostat and confirm normal operation.

Wiring Diagrams

Troubleshooting

Problem Solution

SCRAMBLED OR DOUBLE DISPLAY

1. Remove clear mylar sticker.

(numbers over numbers)

NO DISPLAY

1. Check battery connections and

batteries.

2. Move the battery out hold any key
then place the battery again.

ENTIRE DISPLAY DIMS

1. Replace batteries.

PROGRAM DOES NOT CHANGE AT YOUR

1. Check that time is set properly to “AM” or

“PM”

DESIRED SETTING

2. Check that thermostat is not in “HOLD”

mode.

3. Check for correct day setting.

AUTO/FAN DOES NOT COME ON

1. Move HG/HE system selector to

opposite Position.

HEATING OR COOLING DOES NOT GO

1. Check that function switch is in correct

ON OR OFF

position (“HEAT” or “COOL”).

2. There may be as much as 20 seconds delay

before the system turns on – wait and check .

3. Check your circuit breaks and switches to ensure

there is power to the system.

4. Replace batteries.
5. Make sure your furnace blower door is closed

properly.

6. If your system only uses 4-wires, be sure the
jumper wire is installed between the RC and RH
terminals.

ERRATIC DISPLAY

1. Move the battery out hold any key then place the

battery again.

IF UNIT CONTINUES TO OPERATE

1. Replace unit.

IN OFF POSITION

THERMOSTAT READS , HI, LO

1. Replace unit.

PERMANENTLY

If you experience any other problems, call us for technical assistance.

The service number is 1-866-591-9898

HOUR

DAY

PROG

DAY

PROG

HOUR

MIN

HOUR

MIN

DAY

PROG

DAY

PROG

DAY

PROG

DAY

PROG

THERMOSTAT

AUTO

PROG

DAY

PROG

HOUR

MIN

DAY

PROG

DAY

PROG

HOUR

MIN

DAY

PROG

HOLD

CLEAR

R UN

12/24

HOURS

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