Honeywell Home RET97C Series User manual

Owner’s Manual
Read and save these
instructions.
For help please visit
honeywellhome.com
RTH7600
RET97C Series
Touchscreen
Programmable
Thermostat
Mon
System & FanSchedule Clock & Mode
System
Cool Fan Auto
Set To
Heat On
Recovery
AM
75
75
6:01
Installation is Easy
1. Label wires and remove your old thermostat
2. Install and wire your new thermostat
3. Set your new thermostat to match your heating/cooling system
• This thermostat works with virtually all System Types
• It is preset for the most common system
Do you need assistance? We are here to help.
Call 18004681502 for wiring assistance before
returning the thermostat to the store.
This thermostat works on 24 volt or 750 mV systems.
It will NOT work on 120/240 Volt systems.

2
UP
NOTICE: To avoid possible compressor damage, do not run air
conditioner if the outside temperature drops below 50°F (10°C).
ATTENTION: MERCURY RECYCLING
NOTICE
This product does not contain mercury.
However, this product may replace a product
that contains mercury. Mercury and products
containing mercury should not be discarded in
household trash.
For more information on how and where to
properly recycle a thermostat containing
mercury in the United States, please refer to the
Thermostat Recycling Corporation at
www.thermostat-recycle.org.
For mercury thermostat recycling in Canada,
please refer to Switch the Stat at
www.switchthestat.ca
NO MERCUR
Y
NE PAS JETER
LE MERCURE
Hg
Customer assistance
For assistance with this product, please visit
honeywellhome.com.
Or call Resideo Customer Care toll-free at
18004681502.
To save time, please note your model
number and date code before calling.
Pull at bottom to remove thermostat from
wallplate.
Turn thermostat over to find model number
and date code.
® U.S. Registered Trademark. Patents pending.
US Patent No. 6,595,430; 7,114,554; 7,274,972; 7,225,054 and other patents pending
This thermostat contains a Lithium battery which may contain
Perchlorate material.
Perchlorate Material—special handling may apply, See www.dtsc.
ca.gov/hazardouswaste/perchlorate

3
Installation
Installation.......................................................3
Advanced Installation .............................10
About your new thermostat
Controls and Home screen
quick reference...........................................13
Preset energy-saving schedules.......14
Programming and operation
Setting the clock........................................14
Adjusting program schedules.............15
Overriding schedules temporarily ....15
Overriding schedules permanently..16
Auto Changeover.......................................16
Change filter ................................................17
Replace batteries.......................................18
Appendices
Troubleshooting.........................................19
Limited warranty........................................20
Table of contents
1 Turn Off Power to Heating/Cooling System
or
M31535
Circuit breaker
box Heating/cooling system power switch

4
Do not remove wallplate yet
3 Label Wires with Tags
Label the wires using the supplied wire labels as you disconnect them, then
remove the old wallplate. Wire color might not match labels.
Wire Labels
C
C
MCR33823
Terminal
designation
If you have an older thermostat with
a sealed mercury tube, turn to page
2for proper disposal instructions.
Terminal
designation
C
C
MCR31537
2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
4 Separate Wallplate from New Thermostat
Remove wallplate from the new
thermostat and mount onto wall.
Wallplate
M28073
www.honeywellhome.com

5
5 Mount Wallplate
Mount the new wallplate using the included screws and anchors.
Drill 3/16-in. holes for drywall
Drill 3/32-in. holes for plaster
6 Connect Wires
Simply match wire labels.
If labels do not match letters on the thermostat, check “Alternate Wiring
(Conventional Systems)” on page 6 and connect to terminal as shown
here (see notes, below).
We are here to help. Call 18004681502 for wiring assistance.
MCR28094
Remove metal jumper if you have
both Rand Rc wires.
MCR28070
W2
Y2
C
G
Y
W
RC
R
LABELED WIRES
SCREW
CONVENTIONAL
INSERT WIRES
THEN TIGHTEN SCREWS
WIRE HOLE
Y
G
R
W
CONVENTIONAL

6
Alternate Wiring (Conventional Systems)
If labels do not match terminals, connect wires as shown here (see notes,
below).
Alternate Wiring (Heat Pump)
If labels do not match letters on thermostat, see page 7.
Remove metal jumper connecting Rand Rc only if you must connect
both Rand Rc wires.
If your old thermostat had both Rand RH wires, remove metal jumper.
Connect the Rwire to the Rc terminal, and the RH wire to the Rterminal.
If your old thermostat had only 1 Cor C1 wire, connect it to the
Cterminal. If your old thermostat had 2 Cor C1 wires, wrap each
separately with electrical tape and do not connect them.
RC
R
W
Y
G
C
Y2
W2
Rc
R
W
Y
G
C
Y2
W2
MCR28076
2
3
2
NOTE: If Eand Aux
do not each have a
wire connected, use a
small piece of wire to
connect them to each
other.
MCR33552
Aux
E
L
C
G
Y
O/B
RC
R
HEAT PUMP
Y
G
R
Aux
O
HEAT PUMP

7
Alternate Wiring (For Heat Pumps Only)
2
3
3
4
5
5
6
6
MCR28077
Leave metal jumper in place, connecting R& Rc terminals.
If your old thermostat had both Vand VR wires, stop now and contact a
qualified contractor for help.
If your old thermostat had separate Oand Bwires, attach the Bwire to
the Cterminal. If another wire is attached to the Cterminal, stop now
and contact a qualified contractor for help.
If your old thermostat had Y1, W1 and W2 wires, stop now and contact a
qualified contractor for help.
If Lterminal is used, Cterminal wire must be connected (contact a
contractor if there is no Cwire).
If Eand Aux terminals do not each have a wire connected, use a small
piece of wire to connect them to each other.
5
6

8
7 Install Batteries
Install two AA alkaline batteries and remove tab.
M31544
or
Circuit breaker box Heating/cooling system
power switch
MCR28101
Back of thermostat
Remove tab
8 Install Thermostat onto Wallplate
Install thermostat onto the wallplate on the wall.
9 Turn Power Back On
Turn the power back on to the heating/cooling system.
UP

9
10 Set Time and Date
1. Press sor tto set month, then press NEXT.
2. Press sor tto set day, then press NEXT.
3. Press sor tto set year, then press DONE.
4. Press sor tto set time, then press DONE to save and exit.
11 If your system type is...
If your system type is:
qSingle Stage Heat and Cool
Congratulations, you’re done!
If your system type is:
qMultistage Heat and Cool
qHeat Pump* without Backup Heat
qHeat Pump* with Backup Heat
qHeat Only
qCool Only
Continue with Advanced Installation on next page to match your thermostat
to your system type.
*Heat Pump—an air conditioner that provides cooling in the summer, and also
runs in reverse in the winter to provide heating.
If you are not sure of your system type or if you have other
questions, call us toll-free at 18004681502.
This thermostat works on 24 volt or 750 mV systems. It will NOT work on
multi-stage conventional systems.
Go BackNext Done
6
15
2012
MCR33548
Done
MCR33549
10:10

10
Advanced Installation
Enter System Setup
1. Press and release the left button.
2. Press and hold the center button until the screen changes (approximately
5 seconds).
Changing Settings
1. Press the sor tbutton to
change the setting.
2. Press NEXT to advance to next
function.
3. Press DONE to save & exit.
20
0120
Go BackNextDone
MCR33551
Function Setting
NOTE: Some functions in the following pages may not appear due to previous
selections made.
Function Description Setting
Press the sor tbutton to change the setting.
0120 Year Setting
(first two digits)
20 = Year 20xx
21 = Year 21xx
0130 Year Setting
(second two digits)
01 - 99 (i.e., 2001 - 2099
0140 Month Setting 01 - 12 (i.e., January - December)
0150 Date Setting 01 - 31
MCR3355
0
Mon
System & FanSchedule Clock & Mode
System
Cool
Fan Auto
Set To
PM
72
72
6:30
MCR3359
7
System Fan
Done
System
Heat Off Cool
Fan Auto

11
Function Description Setting
Press the sor tbutton to change the setting.
0170 Select System Type 1Heat/cool: Gas, oil or electric heating with central air
conditioning.
2Heat pump: Heat pump without backup or auxiliary
heat.
3Heat only: Gas, oil or electric heat without central air
conditioning.
4Heat only with fan: Gas, oil or electric heat without
central air conditioning.
5Hot water heat only (no fan): Gas, oil or hot water heat
without central air conditioning.
6Cool only: Central air conditioning only.
7Heat pump: Heat pump with backup or auxiliary
heating.
8Heat/Cool Multiple stages: 2 heat stages (wires on W
and W2), 2 cooling stages (wires on Y and Y2).
9Heat/Cool Multiple stages: 2 heat stages (wires on W
and W2), 1 cooling stage (wire on Y).
10 Heat/Cool Multiple stages: 1 heat stage (wire on W), 2
cooling stages (wires on Y and Y2).
0180 Heating Fan Control 0Gas or oil heat: Use this setting if you have a gas or oil
heating system (system controls fan operation).
1Electric heat: Use this setting if you have an electric
heating system (thermostat controls fan operation).
0190 Heat Pump Changeover
Valve (for heat pumps only)
0Cooling changeover valve: Use this setting if you
connected a wire labeled “O” to the O/B terminal (see
page 6).
1Heating changeover valve: Use this setting if you
connected a wire labeled “B” to the O/B terminal (see
page 7).
0240 Heating Cycle Rate 5Gas or oil furnace: Standard gas/oil furnace (less than
90% efficiency).
9Electric furnace: Electric heating systems.
3Heat pump, hot water or high-efficiency furnace:
Hot water system or gas furnace (more than 90%
efficiency).
1Gas/oil steam or gravity system: Steam or gravity heat
systems.
Settings 5, 9, 3, or 1 recommended. Other settings:
2, 4, 6, 7, 8, 10, 11, 12. The number indicates how
frequently the system cycles on and off to maintain the
set temperature. A higher number means the system is
on and off for shorter amounts of time, a lower number
means longer on and off times. When these settings are
set to match the system type, the thermostat controls
temperature more accurately.
0270 Emergency Heat Cycle Rate
(heat pumps only)
9Electric furnace: Electric heating systems.
0300 Manual/Auto Changeover 0Manual changeover (Heat/Cool/Off).
1Automatic changeover (Heat/Cool/Auto/Off).
Automatically turns on Heat or Cool based on room
temperature. Note: System maintains minimum 3°F
difference between heat and cool settings.

12
Function Description Setting
Press the sor tbutton to change the setting.
0320 Temperature Format (°F/°C) 0Fahrenheit
1Celsius
0330 Daylight Saving Time On/Off 0Off: No adjustment for daylight saving time.
1On: Auto-change to daylight saving time (for areas that
do not use the new 2007 DST calendar).
2On: Auto-change to daylight saving time (2007
and beyond, for areas that use the new 2007 DST
calendar).
0500 Furnace Filter Change
Reminder
0Off (no reminder)
1Reminder in about 1 month
2Reminder in about 3 months
3Reminder in about 6 months
4Reminder in about 9 months
5Reminder in about 1 year
6Reminder in about 3 years
0530 Smart Response®
Technology
1On
0Off
0600 Maximum Heat Setting 90°F (other options: 40-89°F [4-32°C])
0610 Minimum Cool Setting 50°F (other options: 51-99°F [11-37°C])
0640 Clock Format 12 12-hour clock (i.e., “3:30 pm”)
24 24-hour clock (i.e., “15:30”)
About your new thermostat
Your new Resideo thermostat has been designed to give you many years of
reliable service and easy-to-use, push-button climate control.
• Large touchscreen display with backlight is easy to read—even in the dark.
• Daily program schedules maximize comfort and economy.
• One-touch temp control overrides program schedule at any time.
• Precise comfort control keeps temperature within 1°F of the level you set.
• Change/check reminder lets you know when to replace furnace filter.

13
Mon
System & FanSchedule Clock & Mode
System
Cool Fan Auto
Set To
Heat On
Recovery
AM
75
75
6:01
Arrow keys
Press to adjust temperature or
to make selections from screen
menus.
System & Fan
Press to select fan
operation or system.
Schedule
Press to set program schedule (see
pages 1416).
Clock & More
Press to set clock or furnace filter
reminder.
Thermostat controls
Mon
System & FanSchedule Clock & Mode
M27526
System
CoolFan Auto
Set To
Heat On
Recovery
AM
75
75
6:01
Display screen
Day of week
Press the SYSTEM & FAN button, then press…
…SYSTEM to select:
Heat: Heating system control.
Cool: Cooling system control.
Auto: Thermostat automatically selects heating or
cooling depending on the indoor temperature.
Off: All systems off.
Em Heat: Emergency & Auxiliary Heat control.
Compressor is locked out. (Select models only.)
System Status
Cool On: Cooling system
is on.
Heat On: Heating system
is on.
Aux Heat On: Auxiliary
heating system is
activated (heat pump
systems only)
Temperature settingCurrent timeCurrent inside
temperature
Smart
Response®
Technology
in effect (see
page 17)
…FAN to select:
Auto: Fan runs only when heating
or cooling system is on.
On: Fan runs continuously.
Press DONE to exit and save
settings.

14
Program Schedule
You can program four time periods each day, with different settings for
weekdays and weekends. We recommend the pre-set settings (shown in the
table below), since they can reduce your heating/cooling expenses.
Wake - Set to the time you
awaken and the temperature
you want during the morning,
until you leave for the day.
Leave - Set to the time
you leave home and the
temperature you want while you
are away (usually an energy-
saving level).
Return - Set to the time
you return home and the
temperature you want during
the evening, until bedtime.
Sleep - Set to the time you go to bed and the temperature you want overnight
(usually an energy-saving level).
NOTE: Leave and Return periods can be canceled on weekends.
Heat Cool
Wake
(6:00 am) 70 °75 °
Leave
(8:00 am) 62 °83 °
Return
(6:00 pm) 70 °75 °
Sleep
(10:00 pm) 62 °78 °
Clock setting
1. To set the current time display,
press CLOCK & MORE, then press
sor tto adjust the time.
Press and hold sor tto advance
the time more quickly.
2. Press DONE to save & exit (or press
GO BACK to exit without changing
the time).
NOTE: The real-time clock should
never require adjustment since it
automatically updates for daylight
savings time, and stores all date/time
information.
M27527
System & FanSchedule Clock & Mode
M27528
Go Back Done
MON
AM
6:01

15
To adjust program schedules
1. Press SCHEDULE, then EDIT to see
weekdays.
2. Press SELECT DAY to highlight MonFri
(they will share the same settings).
3. Press NEXT STEP twice, then press sor
tto set Wake time for selected days.
4. Press NEXT STEP, then sor tto
set Heat temperature for this time
period.
5. Press NEXT STEP, then sor tto
set Cool temperature for this time
period.
6. Repeat steps 35 to program other
time periods (LEAVE, RETURN, SLEEP),
then press DONE.
7. Repeat steps 16 to program
Saturday/Sunday. (Press sor t
until the desired day is flashing, then press SELECT DAY.)
8. Press DONE to save & exit.
M27527
System & FanSchedule Clock & Mode
M27530
Go BackEdit View
Go Back Next Step Done
Period
Wake
MON
TUE
WED
THU
FRI
M27531
Set To
Heat
AM
62
6:00
Program schedule override (temporary)
Press sor tto immediately
adjust the temperature. This
will temporarily override the
temperature setting for the current
time period.
The new temperature will be
maintained until the next time
period.
When the timer expires, the
program schedule will resume and
set the temperature to the level
you’ve programmed for the current
time period.
To cancel the temporary setting at
any time, press USE SCHEDULE.
Mon
System & FanUse
ScheduleClock & Mode
M27532
System
HeatFan Auto
Temporary
Set To
Heat On
AM
62
68
6:08

16
Program schedule override (permanent)
Press sor tto adjust
temperature, then press HOLD. This
will turn off the program schedule.
Whatever temperature you set will
be maintained 24 hours a day, until
you manually change it, or press
USE SCHEDULE to cancel “Hold” and
resume the program schedule.
CAUTION: To avoid possible compressor damage, do not use Auto
Changeover if the outside temperature drops below 50°F (10°C).
Auto changeover
Use this feature in climates where both air conditioning and heating are
used on the same day. When the system mode is in Auto, the thermostat
automatically selects heating or cooling depending on the indoor
temperature.
While in the Auto mode, if a schedule override takes place (temporarily or
permanently) the thermostat will
automatically adjust the cooling
and heating settings to maintain a
3-degree separation between the
cool and heat settings.
For example, if the heat temperature
is raised to where it gets within
3-degrees of the cool setting, the
display will show an up arrow next
to “Cool” to show the thermostat
is raising the cool setting up to
maintain a 3-degree separation.
The display will also show both “Auto” and either “Heat” or “Cool” for which
temperature setting you are currently adjusting. Press the system button to
select between the heat and cool to view/adjust either mode.
Tue
System
Hold Cancel
M27534
SystemAuto
Heat
FanAuto
Temporary
Set To
Heat
Cool
PM
69
74
1:09
º
Mon
Hold Cancel
M27533
Temporary
Set To
System
HeatFan Auto
AM
62
68
6:08
Permanent Hold

17
If activated during installation,
the furnace filter reminder alerts
you when it is time to replace
your filter.
Press RESET after changing the
filter, to restart the timer.
To reset the reminder interval
before it expires:
1. Press MORE, then NEXT.
2. Press RESET.
3. Press DONE to save and exit.
Filter reminder
ResetSchedule Clock & Mode
M27535
System Fan Auto
Set To
Heat On
Change Filter
AM
70
70
6:01
Heat
ResetNext Done
M27536
60
Days
Special features
Smart Response®Technology: This feature allows the thermostat to
“learn” how long the furnace and air conditioner take to reach programmed
temperature settings, so the temperature is reached at the time you set. For
example: Set the Wake time to 6 am, and the temperature to 70°. The heat
will come on before 6 am, so the temperature is 70° by the time you wake at
6. The message “Recovery” is displayed when the system is activated before a
scheduled time period.
Compressor Protection: This feature forces the compressor to wait a few
minutes before restarting, to prevent equipment damage. During the wait
time, the message “Wait” is displayed on screen.
Auto Changeover: This feature is used in climates where both air
conditioning and heating are used on the same day. When the system is set
to Auto, the thermostat automatically selects heating or cooling depending
on the indoor temperature. Heat and cool settings must be at least 3 degrees
apart. The thermostat will automatically adjust settings to maintain this
3-degree separation.

18
Turn thermostat over, insert
fresh AA alkaline batteries,
then reinstall thermostat.
Battery replacement
M28420
Batteries are optional (to provide
backup power) if your thermostat
was wired to run on AC power when
installed.
Install fresh batteries immediately
when the LO BATT warning begins
flashing. The warning flashes about
30 days before batteries are depleted.
Even if the warning does not appear,
you should replace batteries once a
year, or before leaving home for more
than a month.
Grasp thermostat and pull to
remove from wallplate
UP

19
Troubleshooting
If you have difficulty with your thermostat, please try the following
suggestions.
Most problems can be corrected quickly and easily.
Display is blank • Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• Make sure fresh AA alkaline batteries are correctly installed.
Temperature
settings do not
change
Make sure heating and cooling temperatures are set to acceptable
ranges:
• Heat: 40° to 90 °F (4.5° to 32 °C).
• Cool: 50° to 99 °F (10° to 37 °C).
Heating or
cooling system
does not
respond
• Press SYSTEM to set system to Heat. Make sure the temperature is
set higher than the Inside temperature.
• Press SYSTEM to set system to Cool. Make sure the temperature is
set lower than the Inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• Wait 5 minutes for the system to respond.
Cannot change
system setting
to Cool
• Check Function 0170: System Type to make sure it is set to match
your heating and cooling equipment.
Fan does not
turn on when
heat is required
• Check Function 0180: Heating Fan Control to make sure it is set
to match your heating equipment.
Heating system
is running in
cool mode
• Check Function 0170: System Type to make sure it is set to match
your heating and cooling equipment.
Red light is on • If thermostat is in Emergency Heat mode the red light is normal.
It shows that the thermostat is in emergency heat mode.
• If thermostat is not in Emergency Heat mode, contact a qualified
service contractor for repair.
“Wait” appears
on the screen • Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor.
Heat pump
issues cool air
in heat mode,
or warm air in
cool mode
• Check Function 0190: Heat Pump Changeover Valve to make
sure it is properly configured for your system.
For assistance with this product, please visit honeywellhome.com or call
Resideo Customer Care toll-free at 18004681502.

Resideo Inc., 1985 Douglas Drive North
Golden Valley, MN 55422
www.resideo.com 33-00089EF—03 M.S. Rev. 05-19 |
Printed in United States
This product is manufactured by Resideo Technologies, Inc., Golden Valley, MN,
1-800-468-1502
©2019 Resideo Technologies, Inc. The Honeywell Home trademark is used under
license from Honeywell International Inc. All rights reserved.
33-00089EF-03
1-year limited warranty
Resideo warrants this product, excluding battery, to be free from defects in
workmanship or materials, under normal use and service, for a period of one (1) year
from the date of first purchase by the original purchaser. If at any time during the
warranty period the product is determined to be defective due to workmanship or
materials, Resideo shall repair or replace it (at Resideo’s option).
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the place from which
you purchased it; or
(ii) call Resideo Customer Care at 18004681502. Customer Care will make the
determination whether the product should be returned to the following address:
Resideo Return Goods, 1985 Douglas Dr. N., Golden Valley, MN 55422, or whether a
replacement product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty shall not
apply if it is shown by Resideo that the defect was caused by damage which occurred
while the product was in the possession of a consumer.
Resideo’s sole responsibility shall be to repair or replace the product within the terms
stated above. RESIDEO SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY
KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING,
DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR
IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential
damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY RESIDEO MAKES ON THIS
PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS
HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do
not allow limitations on how long an implied warranty lasts, so the above limitation may
not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary
from state to state. If you have any questions concerning this warranty, please write
Resideo Customer Care, 1985 Douglas Dr, Golden Valley, MN 55422 or call
18004681502.