Chicago Controls Thermostats PRG7372 Owner'S Manual Download Page 2

 

Heating 

DAY  Program1 Program2 Program3 Program4 

Mon. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Tue. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Wed. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Thu. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Fri. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Sat. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Sun. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Cooling 

DAY  Program1 Program2 Program3 Program4 

Mon. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Tue. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Wed. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Thu. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Fri. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Sat. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Sun. Time 

Temp 

Time 

Temp 

Time 

Temp 

Time 

Temp 

Manual Programming   

 Your thermostat can be programmed for weekdays and weekends, or have unique 

programs for all 7 days. Use Weekday/Weekend Programs or 7-day Programming to 
enter or revise programs to match your Personal Program Schedule. The same steps 
are used when entering programs for the first time, or revising programs entered during 
Auto Programming. 

 Familiarize yourself with Manual Programming, so that you can easily modify your 

programs as your comfort needs change. The example below demonstrates the Manual 
Programming method. 

NOTE:  

1. The program time can be set in 10-minute increments, and remains the same for both 
Heat and Cool programs.   
2. The program temperature can be set in increments of 1

˚

F (1

˚

C). 

3. The Heat setpoint can not be set higher than the Cool set point, and the Cool 
set point can not be set lower than the Heat set point. 
4. If the system selector is in AUTO mode, the current operating mode will be used for 
programming. 
5. After 15 seconds without a key press, the thermostat will return to normal display 
mode. 
6. When setting the program time, note the AM/PM indicator. 
7. With the Auto Recovery will determine how early to turn your system on, so that the 
room is comfortable at the programmed time. 

Weekday/Weekend Programming   
Weekday Programs

 

         Press                                                      Display Reads                                                           
                                     

 

Normal display of time, temperature,

   

                                         

and day of the week. 

 
 
                                                                                                                                                                 

Step 1                     

 

Selects days Mon to Fri for same set of 4   

programs each day.

 

 

 
   

                                                                                                                                                             
Step 2                     

 Program indicator(1) is displayed. 

                                 

 68

 is displayed. 

                                 

 

                                 

 Mon to Fri is displayed.

   

                                                                                        

Step 3                     

 Press and hold until 6:00 is displayed. 

                                 

 Note AM/PM 

 
 

                                                                                                                                                                                             
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. 
                                                                                                                                                                   

                                 

 

Selects weekend days Sat, Sun for same 

           

                                     

set of 4 programs each weekend day.

                                     

                                     

 Follow steps 2-4 to enter programs. 

 
                                                                                                                                                                                                       

Similar to weekday programming.   
 
                                          to insert weekend programs. 
                                                                                                                                                                       

Individual Day Programming   

To program an individual day with it's own program, first select day in the display, then 
insert the desired times and temperatures. 
           

Press                                                                                                    Display Reads                                                                                         

                                   

 Mon to Fri are selected. Mon to Fri will have   

                                      Same programs.

 

 

 
 
                                                                                                                                                               

 Sat to Sun will have 

 Same programs.

 

 

 
 
                                                                                                                                                                           
                                   

 Mon is selected, program for Mon only. 

 
 
 
                                                                                                                                                                     
Use                                                                          to enter programs for Monday. 
 
 
                                                                                                                                                                     
Similarly                   

Tue to Sunday can be selected.

   

 

 
 
                                                                                                                                                                       
Display the day to be programmed and use   

 
to enter programs. 

                                                                                                                                                                       

NOTE: Another approach to programming is to first program all weekdays Mon 
through Fri and Sat and Sun 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.  

                                                                                         

 

 Normal display of current time, day of week 

  temperature, and day of week. 

 
 
.                                                                                                                                                                     

                         

 1st weekday program is displayed. 

                         

 Program indicator(1) appears. 

                         

 Mon to Fri indication appears. 

 

Continue pressing         to view each day. 

 

                         

Continue pressing         to view each period. 

                                                                                                                                                                   
If you are armchair programming the thermostat, before you mount the face of the 
thermostat, turn the system selector to the OFF position. 

Reviewing the Current Temperature Setting     

Current time and temperature. 

 

 Press less than 1 second . 

 Set Temperature is shown above current room 

temperature. 

 

OPERATION 
System Selector Switch   

The System Selector Switch on the front of the thermostat determines   
the Operating mode of the thermostat. You may select COOL, OFF,     
HEAT, AUTO. In order to take full advantage of this thermostat’s 
feature, we recommend using the AUTO mode. Refer to the Auto Season Changeover 
information on Auto Season Changeover. 

NOTE

: Anytime you install or remove the thermostat from the wallplate, slide the System 

Selector to the OFF position to prevent the possibility of a rapid system On-Off. 

Fan Switch 

The Fan switch should normally be located in the AUTO position. The Fan 
will be turned on along with normal operation of your system. In a normal   
gas or oil furnace, the Fan will be turned on by your furnace after its warm-up   
delay. For electric heat, air conditioning, and heat pump operation, the Fan will turn on 
with the system. To run the Fan on continuously, slide the Fan switch to the ON 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 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 is canceled, and the next 
program temperature becomes the setpoint temperature.   

NOTE

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

Temporary Manual Override. Refer to the Auto Season Changeover feature for more 
information. 

NOTE: 

The Auto Season Changeover feature will not operate while the thermostat is in 

permanent Manual Override. Refer to the Auto Season Changeover feature for more 
information. 

Auto Season Changeover 

When  the System Selector is in AUTO position, the thermostat will automatically 
change between Heating and Cooling systems, depending on your program. We 
recommend keeping your programmed heating and cooling temperatures at least 4

˚

(2

˚

C) apart to allow the Auto Season Changeover to occur when the appropriate 

temperature span has been reached. There is a Temporary Override or Permanent 
Override, however these overrides are not energy saving settings. Auto Season 
Changeover will still function in Home Today mode, as this is a comfort setting. 
For example, you may have the following temperatures programmed at a given time: 
Heat Set Temp=68

˚

F, Cool Set Temp=78

˚

If the room temperature rises above 78

˚

F, then the thermostat will automatically change 

to cool mode and turn on the air conditioner. 
Likewise, the thermostat will automatically change to heat mode and turn on heat when 
the room temperature falls below 68

˚

F. 

HOME TODAY     

This patent pending feature allows you to quickly and Temporarily Override your energy 
saving program setting on days when you are normally away from home with one key 
press. 

 Press to enter the Home Today override. The highest 

program temperature for today will be selected from 
your programs in Heat mode and become the set 
temperature. (In Cool mode, Home Today will select 
the lowest program temperature for today to be the set 
temperature.) 

 The display will alternate between “HOME” and the current time. 

 When pressed during the day, the thermostat will remain in Home Today mode 

until the first program of the next day. 

If the system is changed between Heat and Cool modes (either manually or by 

Auto Season Changeover) during the “Home Today” override period, the setpoint 
temperature will be automatically update. It will automatically change from the lowest 
cool program setpoint to the highest heat program setpoint. 

 Press to exit Home Today mode before the schedule ending time. ”HOME” is 

no longer displayed on the LCD screen, and the thermostat returns to the current 
program. 

 You can manually change the setpoint temperature while in Home Today mode. 

Refer to the Temporary Manual Override instructions. Manually changing the set 
temperature while in Home Today mode will not affect the Home Today ending 
time, However, the set temperature will not change automatically with a manual 
or Automatic change between heating and cooling. 

Energy Monitor

 

 The Energy monitor feature measures and stores the 

amount of time the heating and air conditioning system 
operates. Usage can be displayed for Today (since 12 
AM), Yesterday, This Week (since Monday), Last Week 
(last Monday through Sunday), and Total (up to 999 
Hrs). By monitoring your energy usage, you see how much the set-back periods 
are saving, and you can test program adjustment to save even more. To review 
energy usage, press to cycle through Today, Yesterday, this Week, Last Week, 
and Total. Press again to return to normal mode, or wait 15 seconds for the 
display to return to normal mode. You can also return to normal mode at any time 
by pressing RUN. 

 For example: This LCD display shows Today’s usage to be 10 Hours, 26 

 minutes. 

 Press and hold for 3 seconds to reset the Energy Monitor’s counters. 

The display will blink, and counters will be cleared to zero. 

NOTE: 

Clearing the Energy Monitor counter will also clear the Filter Monitor counter , as 

Filter usage and Total Energy usage are the same. Also, clearing the filter Monitor 
counter will clear ALL Energy Monitor counters as well. 

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 clean your filter 
regularly. 

 When the total system run time for heat and cool reaches 

500 hours, you need 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. 

NOTE: 

Clearing the Filter Monitor counter will also clear ALL Energy Monitor counters, 

as Filter usage and Total Energy usage are the same. Also, clearing the Energy Monitor 
counters will clear the Filter Monitor counter as well.

 

Auto Recovery 

Auto Recovery calculates how early to turn your system back on, so that the room 
temperature is already comfortable by the start of the comfort temperature program 
period. Auto Recovery works 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. 

Auto Recovery can be disabled by sliding the Recovery switch 

on the circuit board to disable. 

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

Auto Recovery can be canceled manually if HOLD is pressed during the recovery 

process. 

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 DISABLE position. 

 Today is in operation. 

 Auto Recovery can be canceled manually if HOLD 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. 

Keyboard lock   

The keyboard can be locked to prevent unauthorized changes 
to the thermostat. 
To lock or unlock the keyboard, press and hold hold/run Key 
for 3 seconds. The keyboard is locked, when LOCK appears 
on the display. 

    All keys are locked, Any time a key is pressed, LOCK will appear on the display for 1 

second. 

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. 

Low Battery Warning 

Your thermostat has a two-stage low battery warning system. 
When the batteries are first detected to be weak, the first 
stage low battery warning is indicated by “BATT” flashing on 
the LCD display. At your earliest convenience, you need to 
replace the batteries with 2 new AA alkaline batteries. 
When the batteries become too weak for normal operation, the 
thermostat enters the second stage low battery warning which 
shuts down the thermostat. In this condition, “BATT” flashes 
alone on the display, and the thermostat will turn your system 
Off. Your system will remain off until the batteries are replaced. 

NOTE: 

The thermostat will still keep the current Set Temperature and Filter run time in 

memory until new batteries are installed. After confirming that new batteries have been 
inserted, the thermostat will return to normal operation. 

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”, “E2”, ”E3” 
or ”E4” 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. 
Remove the battery, and then hold any key to release the 
remaining charge.  Re-insert the battery. You will need to 
reprogram your thermostat and confirm normal operation. 
If Error Mode returns, please call us for further information. 

Lcd display

information

Lcd display

information 

E1

Sensor Error

E3

No use 

E2

System switch Error

E4

E2 memory Error 

Warning Mode 

If the SYSTEM MONITOR SWITCH is closed the thermostat flashes 
“E5” on the LCD display. 
 

 

Auto Shut Off 

Your thermostat will automatically shut off in Heat mode if the room temperature rises 
above 73

˚

F (23

˚

C). It will shut off in Cool mode if the room temperature drops below 

72

˚

F (22

˚

C). 

Note that if your system has malfunctioned and no longer responds to thermostat 
controls, the Auto Shut-Off will have no effect.

 

TROUBLESHOOTING   

Problem

     

Solution

 

SCRAMBLED OR 
 DOUBLE DISPLAY 
(numbers over   
numbers) 

1. Remove clear mylar sticker.     

NO DISPLAY 

1.  Check battery connections and batteries 
2. Remove the battery, and then hold any key to release 
the remaining charge.    Re-insert the battery. 

ENTIRE DISPLAY 
DIMS 

1. Replace Batteries 

PROGRAM DOES   
NOT CHANGE AT   
YOUR DESIRE   
SETTING   

1. Check that the time is set properly to “AM” or “PM”   
2. Check that the thermostat is not in “HOLD” o r “ Home 

 Today” mode. 

3. Check for the correct day settings. 

AUTO/FAN DOES 
NOT TURN ON   

1. Move Elec/Gas selector to opposite position is in the 
correct position (“HEAT,”COOL” or “AUTO”) 
2. The thermostat may be in the AUTO Mode. Look 
for ”AUTO” on the LCD display. If the Heat and Cool 
program temperature are close, then the thermostat 
requires a larger room temperature change before 
changing from Heat or Cool.   
3. There may be as much as 4 minute delay before the 
Heat or Cool system turns on. Wait and check.  
(Compressor protection delay). 
4. Check your circuit breakers and switches to ensure 
there is power to the system. 
5. Replace batteries. 
6. Make sure your furnace blower door is closed properly. 
7. If your system only uses 4-wires, be sure the jumper 
wire is installed between the RC and RH terminals. 
8. Check the position of the Furnace or Heat Pump selector 
switches: Normal/O/B. 

ERRATIC DISPLAY        1. Remove the battery, then hold any key to discharge the 

energy. Then place the battery in again. 

IF UNIT CONTINUES
TO OPERATE IN THE 
OFF POSITION      

1. Replace unit 
 

THERMOSTAT 
PERMANENTLY 
READS 
“E1”,”E2”,”E3”, “E4”.. 

1. Replace unit. 
 

 

heat 

off

cool

system

auto

on

auto

fan

HOME

TODAY

ENER

HOUR

DAY

PROG

PROG

DAY

PROG

HOUR

MIN

DAY

PROG

DAY

PROG

DAY

PROG

DAY

PROG

HOUR

MIN

DAY

PROG

HOUR

MIN

DAY

PROG

HOUR

MIN

PROG

DAY

PROG

PROG

HOLD

/ RUN

HOLD

/ RUN

HOLD

/ RUN

HEAT

2

TEMP

M

H

HEAT

TEMP

3

Mon  

HEAT

AM

1

Mon  

HEAT

AM

1

Mon  

HEAT

AM

1

HEAT

2

TEMP

AM

Mon  

M

H

Mon  Tue  Wed  Thu  Fri  

HEAT

AM

1

TEMP

Mon  

HEAT

AM

1

TEMP

SET TEMP

1

HEAT

TEMP

HEAT

TEMP

PM

TEMP

 Sat 

Mon  Tue  Wed  Thu  Fri

AM

1

Mon  Tue  Wed  Thu  Fri

AM

1

PM

TEMP

 Sat 

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