Source 1 S1-THEH21P5S User manual

HVAC SERVICE PARTSTM
O w n e r ’s M a n u a l
O w n e r ’s M a n u a l
5+2 Day Programmable
5+2 Day Programmable
Heat Pump
Heat Pump
BACKLIT DISPLAY
Digital
Therm ostat
Digital
Therm ostat
Battery or System Powered
Battery or System Powered
Control up to 2-Heat & 1-Cool
Control up to 2-Heat & 1-Cool
Backlit Digital Display
Backlit Digital Display
Emergency Heat
Emergency Heat
Auxiliary Heat Indicator
Auxiliary Heat Indicator
Fahrenheit or Celsius
Fahrenheit or Celsius
Service Filter Indicator
Service Filter Indicator
Model
S1-THEH21P5S
Use with most
Heat Pump systems:
1-Heat, 1-Cool
2-Heat, 1-Cool
Use with most
Heat Pump systems:
1-Heat, 1-Cool
2-Heat, 1-Cool

Page 2
OWNER'S MANUAL
S1-THEH21P5S
Contents Page #
Time Period Programming
Advanced Setup
Battery Replacement
Overview
Weekday Programming
Weekend Programming
Normal Operation
Manual Operation
Warranty
Safety Warnings
Location of Controls
Display
Programmed Operation
Clock Set
Advanced Features
Factory Defaults
Calibration
Aux Heat

The two Alkaline “AA” batteries must be replaced at
least once every 12 months to ensure proper
operation. The Low Battery icon (fig. 1) will
appear on the display when it is time to replace
the batteries. If the thermostat is connected to
24v power, the batteries should still be installed, but
are not required.
When is displayed the batteries must be replaced
immediately. The manufacturer cannot be liable for
improper operation of the thermostat if the batteries are
not immediately replaced.
Annual battery replacement is especially critical in
locations subject to freezing temperatures. The
thermostat will be unable to turn on the heating system
if the batteries are exhausted.
CAUTION Follow Installation Instructions carefully.
DISCONNECT POWER TO THE HEATER -
AIR CONDITIONER BEFORE REMOVING
THE OLD THERMOSTAT AND INSTALLING
THE NEW THERMOSTAT.
WARNING
Page 3
Safety Warnings
CAUTION
FIG. 1
OWNER'S MANUAL
S1-THEH21P5S
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including
interference that may cause undesired operation.
P/N S1-THEH21P5S

Location of Controls
Page 4
COOLER &
WARMER
BUTTONS
PROGRAM SWITCH
RUN program
Program OFF
SET program
MODE SWITCH
Cool, Off, or Heat
NEXT BUTTON
For programming
On or Auto
FAN SWITCH AUX HEAT
SWITCH
Emergency
Normal
Lockout
RESET FILTER
OWNER'S MANUAL
S1-THEH21P5S
How to Use: The NEXT
button is used to ad-
vance from one step to
the next in the progra-
mming and advanced
setup screens (pgs 10-
19).
How to Use: Press and
hold the RESET FILTER
button to clear the
icon from the
display (pg 5). To adjust
when the icon
appears, see Advanced
Setup screens (pg 19).
FILTER
FILTER

Page 5
Display
88
88
SET
MTuWThF
SaSu
AM
PM MorningEvening
Day
Night AUX
HEAT
COOL
I2:00
:
FILTER
OWNER'S MANUAL
S1-THEH21P5S
Clock Display.
Desired set temperature.
Current room temperature.
Indicates that 2nd stage of heat is energized.
Indicates when the filter should be serviced. Appears
after 0 - 1950 hours of blower operation (adjustable).
Indicates batteries need replacement.
Heat and Cool indicators. In normal operation, Heat or
Cool appears, depending on the Mode Switch position.
When heat or cool is energized, the Heat or Cool
indicator will flash.
Day of the week. When programming, MTuWThF
represent the five weekdays and SaSu represent the
two weekend days.
Time period indicators. These indicate the part of
the program that is currently active, if the Program
Switch is positioned to RUN.

Page 6
Normal Operation
COOLER & WARMER
BUTTONS
PROGRAM SWITCH
RUN program
Program OFF
SET program
MODE SWITCH
Cool, Off, or Heat
On or Auto
FAN SWITCH
OWNER'S MANUAL
S1-THEH21P5S
Manual Operation (Program Switch OFF)
Select Cool or Heat with the Mode Switch.
Normally leave the fan switched to Auto.
In Fan Auto, the fan will turn on only with a heat
or cool demand. When Fan On is selected, the
fan will run continuously.
Adjust the desired set temperature with the
COOLER and WARMER buttons.

Normal Operation
Page 7
COOLER & WARMER
BUTTONS
PROGRAM SWITCH
RUN program
Program OFF
SET program
MODE SWITCH
Cool, Off, or Heat
On or Auto
FAN SWITCH
OWNER'S MANUAL
S1-THEH21P5S
Programmed Operation
Select Cool or Heat with the Mode Switch.
Normally leave the fan switched to Auto.
In Fan Auto, the fan will turn on only with a heat
or cool demand. When Fan On is selected, the
fan will run continuously.
The desired set temperature may be temporarily
overridden. The thermostat will revert to the
programmed settings in the following time period.
Select RUN with the Program Switch.

Page 8
Aux Heat
AUX HEAT
SWITCH
OWNER'S MANUAL
S1-THEH21P5S
Emergency - Disables all compressor
functions* and energizes only Aux
Heat to satisfy the heat demand.
Normal - Aux Heat is allowed to run, if necessary,
along with the heat pump to satisfy the
heat demand.
Lockout - Aux Heat will never turn on
regardless of the heat demand.
When the Aux Heat switch is in the Emergency position the compressor will also be
locked out during cooling operation.
*

Page 9
Clock Set
Use these buttons to
adjust the current time.
Use these buttons to
adjust the current day.
Slide the program switch to the SET position.
PM
6:00
:
Su
Press NEXT
to advance
NEXT
RUN
OFF
SET
PROGRAM
OWNER'S MANUAL
S1-THEH21P5S
Setting the time & day are the first two steps after
sliding the Program Switch to SET.
This thermostat is preprogrammed from the
factory to operate 1 or 2-Stage equipment without
the need for further programming. To optimize the
installation of this thermostat follow the instructions
in the Advanced Setup section.
To slew the time more rapidly, push and hold the
COOLER or WARMER buttons.

Time Period Programming
PROGRAM SWITCH
Page 10
Overview
OWNER'S MANUAL
S1-THEH21P5S
Slide the Program Switch to the SET position.
The blinking icon(s) on the display may be
changed by pressing the COOLER or
WARMER buttons.
After the blinking icon is changed to the desired
selection, press the NEXT button.
Each item in the time period programming screens will flash
and can be modified with the COOLER & WARMER buttons.
Continue the steps above until programming is complete.
Slide the Program Switch to RUN and the thermostat
will run the time period programming.
If the Program Switch is in the OFF position, the thermostat
will not run the time period program. In this case, the
thermostat will be a manual heat or cool only thermostat.
RUN
OFF
SET
PROGRAM

Page 11
Weekday Programming
Next Page
Time Period Programming
MTuWThF
AM Morning
6:00
:
8
SET
MTuWThF
AM Morning
COOL
6:00
:
SET
MTuWThF
AM Morning
HEAT
6:00
:
MTuWThF
AM
Day
8:00
:
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
RUN
OFF
SET
PROGRAM
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Setting the time & day are the first two steps after
sliding the Program Switch to SET (page 9).
Use these buttons to
adjust the start time for
the morning time period.
Use these buttons to
adjust the cool setpoint for
the morning time period.
Use these buttons to
adjust the heat setpoint for
the morning time period.
Use these buttons to
adjust the start time for
the day time period.

Page 12
Next Page
Weekday Programming
Time Period Programming
SET
MTuWThF
AM
Day
COOL
8:00
:
SET
MTuWThF
AM
Day
HEAT
8:00
:
MTuWThF
PM Evening
6:00
:
SET
MTuWThF
PM Evening
COOL
6:00
:
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Use these buttons to
adjust the cool setpoint for
the day time period.
Use these buttons to
adjust the heat setpoint for
the day time period.
Use these buttons to
adjust the start time for
the evening time period.
Use these buttons to
adjust the cool setpoint for
the evening time period.

Page 13
Next Page
Weekday Programming
Time Period Programming
SET
MTuWThF
PM Evening
HEAT
6:00
:
MTuWThF
PM
Night
I0:00
:
SET
MTuWThF
PM
Night
I0:00
:
HEAT
SET
MTuWThF
PM
Night
COOL
I0:00
:
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Use these buttons to
adjust the heat setpoint for
the evening time period.
Use these buttons to
adjust the start time for
the night time period.
Use these buttons to
adjust the cool setpoint for
the night time period.
Use these buttons to
adjust the heat setpoint for
the night time period.

Page 14
Next Page
Weekend Programming
Time Period Programming
AM Morning
6:00
:
SaSu
8
SET
AM Morning
COOL
6:00
:
SaSu
SET
AM Morning
HEAT
6:00
:
SaSu
AM
Day
8:00
:
SaSu
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Use these buttons to
adjust the start time for
the morning time period.
Use these buttons to
adjust the cool setpoint for
the morning time period.
Use these buttons to
adjust the heat setpoint for
the morning time period.
Use these buttons to
adjust the start time for
the day time period.

Page 15
Next Page
Weekend Programming
Time Period Programming
8 00 AM
Day
SET
62
HEAT
SaSu
COOL
SET
78
6 00 PM Evening
SaSu
SET
PM Evening
COOL
6:00
:
SaSu
PM Evening
6:00
:
SaSu
SET
AM
Day
HEAT
8:00
:
SaSu
SET
AM
Day
COOL
8:00
:
SaSu
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Use these buttons to
adjust the cool setpoint for
the day time period.
Use these buttons to
adjust the heat setpoint for
the day time period.
Use these buttons to
adjust the start time for
the evening time period.
Use these buttons to
adjust the cool setpoint for
the evening time period.

Page 16
Next Page
Weekend Programming
Time Period Programming
SET
PM
Night
I0:00
:
HEAT
SaSu
SET
PM
Night
COOL
I0:00
:
SaSu
PM
Night
I0:00
:
SaSu
SET
PM Evening
HEAT
6:00
:
SaSu
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Use these buttons to
adjust the heat setpoint for
the evening time period.
Use these buttons to
adjust the start time for
the night time period.
Use these buttons to
adjust the cool setpoint for
the night time period.
Use these buttons to
adjust the heat setpoint for
the night time period.

Page 17
Time Period Programming
RUN
OFF
SET
PROGRAM
RUN
OFF
SET
PROGRAM
OWNER'S MANUAL
S1-THEH21P5S
After you have completed setting the time
period programming, you have two options:
1) Run the time period program by sliding the
Program Switch to the RUN position.
Or,
2) Do not run the time period program. The
thermostat will operate as a manual heat
or cool thermostat. Slide the Program
Switch to OFF in this case.

Advanced Setup
This is normally done by the installer at initial installation.
Press NEXT
to advance
Press NEXT
to advance
Press NEXT
to advance
Page 18
Press NEXT
to advance
Continued
*ON is only available if the thermostat
is system powered.
NEXT
NEXT
NEXT
NEXT
OWNER'S MANUAL
S1-THEH21P5S
Use these buttons to
adjust the Cycles Per Hour
from 2 to 6.
d=no limit (zoning)
d1=d+no compressor
lockout (page 19).
Select backlight operation
when a button is pressed:
OFF: Never turns on.
2,4,6 or 8: Seconds back-
light will be on.
ON: Always on.*
Use these buttons to select
thermostat operation in
degrees C or F.
Use these buttons to
adjust the deadband
from 1 to 6 degrees
(page 19).
Enter advanced setup by sliding the Program Switch to
SET. When the clock is flashing, press the NEXT button for
5 seconds. Do not release the button until this screen
appears.

Page 19
About Advanced
Features & Operation
Press NEXT
to advance
0
FILTER
Press RESET
FILTER
NEXT
RESET
FILTER
OWNER'S MANUAL
S1-THEH21P5S
Adjust the number of hours
the fan will run before the
icon appears on the
display. 0 = off.
FILTER
Press and hold the RESET
FILTER button to reset
the filter counter to 0 and
remove the icon
from the display.
FILTER
Slide the Program Switch to OFF or RUN to exit
Advanced Setup.
ICON - The icon will appear after a set
number of hours for fan run time (see above) has been
achieved. This counter keeps track of the number of hours
of fan run time whether the fan is energized in the heating
or cooling modes, or in stand alone operation.
FILTER FILTER
CYCLES PER HOUR - The Cycles Per Hour setting (page 18)
monitors the number of times per hour your HVAC unit may
energize. For example, at a setting of 6 cycles per hour the
HVAC unit will only be allowed to energize once every 10
minutes. The Cycles Per Hour limit may be temporarily
overridden by pressing the WARMER or COOLER button.
0
FILTER
SET
Actual hours of
fan operation
TWO STAGE OPERATION - The 2nd stage of heat (auxiliary
heat) is turned on when the room temperature is equal to or
less than: the setpoint minus the 1st stage deadband (one
degree, adjustable), minus the 2nd stage deadband (two
degrees, non-adjustable).
Heat or Cool
Setpoint
Deadband Deadband
db 1db 2 (adj. 1-6 )
1st Stage
turn on
2nd Stage
turn on
Heating
(non-adj. 2 )
Deadband
db 1
(adj. 1-6 )
1st Stage
turn on
Cooling

Factory Default
Press NEXT
to advance
Page 20
88
88
SET
MTuWThF
SaSu
AM
PM MorningEvening
Day
Night AUX
HEAT
COOL
I2:00
:
FILTER
88
88
SET
MTuWThF
SaSu
AM
PM MorningEvening
Day
Night AUX
HEAT
COOL
I2:00
:
FILTER
CAUTION
NEXT
RUN
OFF
SET
PROGRAM
OWNER'S MANUAL
S1-THEH21P5S
If, for any reason, you desire to return all the stored settings
back to the factory default settings, follow the instructions below.
Enter advanced setup by sliding the Program Switch to
SET. When the clock is flashing, press the NEXT button for
5 seconds. Do not release the button until this screen
appears.
When the Cycles Per Hour is
flashing, press and hold the NEXT
button until this screen appears.
Press and hold the
NEXT button again
until this screen appears.
After restoring factory
defaults, the thermo-
stat screen will display
all icons.
Slide the Program Switch to OFF or RUN to
return to normal operation.
WARNING: This will reset all Time Period and Advanced Programming to
the default settings. Any information entered prior to this reset may be
permanently lost.