Pro 1 IAQ T855i User manual

INSTALLATION MANUAL
4
5-6
7-11
12-15
16
Installation Tips
Themostat Quick Reference
Subbase Installation
Wiring
Technician Setup Menu
Features and Specications
2
3
Thermostat Applications Guide
Table of Contents Page
Description
Gas or Oil Heat
Electric Furnace
Heat Pump (No Aux. or Emergency Heat)
Heat Pump (with Aux. or Emergency Heat)
Multi-stage Systems
Heat Only Systems
Cool Only Systems
Millivolt
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Hardwire (24 VAC Common Wire)
Power Type
1
Programming
Rev. 1429
A trained, experienced technician
must install this product.
Carefully read these instructions. You
could damage this product or cause a
hazardous condition if you fail to follow
these instructions.
Patents and Trademarks pending.
Copyright © 2013. All rights reserved.
Una versión en español de este
manual se puede descargar en la
página web de la compañía.
T855i
MENU AUTO HEAT
Upstairs
Heat Cool O

Installation Tip
Wall Locations
Do not install thermostat in locations:
• Close to hot or cold air ducts
• In areas that do not require
conditioning
Pick an installation location that is easy for the user to access. The temperature of the location
should be representative of the building.
2
INSTALLATION TIPS
The thermostat should be installed approximately 4 to 5 feet above the oor. Select an area with average
temperature and good air circulation.
NO
NO NO YES
• With an outside wall behind the thermostat
• Where there might be concealed
chimneys or pipes
• Where there are dead spots or
drafts (in corners or behind doors)
• That are in direct sunlight
Getting to know your thermostat
2
Fan Button
3
System Button
4
Menu Buttons Access Door
5
Temperature Setpoint Buttons
6
Menu Button
7
User Program Buttons
8
Glow in the Dark Light Button
6
7
8
1
2
3 4
5
Important:
The low battery indicator is displayed
when the AA battery power is low. If the
user fails to replace the battery within
21 days, the thermostat display will only
show the low battery indicator as a final
warning before the thermostat
becomes inoperable. The batteries are
located on the back of the thermostat.
LCD
1Hold is displayed when
thermostat program is
permanently overridden.
+1 will appear in the
display when second
stage of heat or cool
is on. +2 will appear
for third stage of heat.
System operation
indicators: The COOL,
HEAT or FAN icon will
display when the COOL,
HEAT or FAN is on.
NOTE: The compressor
delay feature is active if
these icons are flashing.
The compressor will not
turn on until the 5 minute
delay has elapsed.
Days of the
week and time
Low Battery Indicator:
Replace batteries when
this indicator is shown.
Program Menu Options:
Shows different options
during programming.
Indicates the
current room
temperature.
Programmable
Time Period Icons:
This thermostat has
4 programmable time
periods per day.
Displays the user
selectable setpoint
temperature.
All our thermostats use the same universal magnetic badge.
Visit our website to learn more about our free private label program.
About the Badge
Removing the private label badge
Gently slide a screwdriver into the
bottom edge of the badge. Gently
turn the screwdriver counter
clockwise. The badge is held on by a
magnet. The badge should pry o
easily. Do not use force.
Magnet in door
Use the bevel on lower ridge

Temperature Set Point Buttons
User Program Buttons
System Button
Fan Button
Glow in the Dark Light Button
6
2
3
5
LCD Display
1
Getting to know your thermostat
Indicates the
current room
temperature.
Displays the user
selectable setpoint
temperature.
Hold is displayed when
thermostat program is
permanently overridden.
Days of the
week and time
Programmable Time Periods
Residential: uses 4 time
periods- WAKE, RETURN, LEAVE
and SLEEP.
Commercial: uses 2 time
periods - Occupied and
Unoccupied.
7
2
3
5
7
6
Button Access Door
88:88AM
PM
8.8C
F
Set At
8.8
HOLD
1234
Wake
Return
Leave
Sleep
SatSunMon
TueWedThurFri
5:23 PM
F
Tue
Menu Auto O
Button Information.
4
4
Stage
F
C
OutdoorTemp
UnOccupied
Wi-Fi Connection
Indicator
Wi-Fi Signal
Strength
Lockout
Indicator
Fan
Indicator
Indicates stages
of system running.
Information Field
MENU AUTO HEAT
1
3
THERMOSTAT QUICK REFERENCE

4
All of our thermostats are
mercury free. However, if the
product you are replacing
contains mercury, dispose of it
properly. Your local waste
management authority can give
you instructions on recycling and
proper disposal.
Caution:
Electrical Hazard
Failure to disconnect the
power before beginning to
install this product can cause
electric shock or equipment
damage.
For vertical mount put
one screw on top and one
screw on bottom.
For horizontal mount put
one screw left and one
screw right.
Caution
Mercury Notice:
Prior to installing subbase
place non-ammable
insulation into wall
opening to prevent drafts.
Installation Tip
UP
Vertical Mount
Horizontal Mount
Vertical Mount
Horizontal Mount
RC
RH
SUBBASE INSTALLATION
Mount Thermostat
Align the 4 tabs on the subbase with corresponding slots
on the back of the thermostat, then push gently until the
thermostat snaps in place.
Note: To insure a solid fit between the
thermostat and the subbase:
Mount subbase to a flat wall
Use screws provided
Drywall anchors should be flush with the wall
Wires should be pushed into the wall
1.
2.
3.
4.
MENU AUTO HEAT

4
3
2
1Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
A 24 VAC common connection is required with this thermostat.
5
4
21
COMPRESSOR
RELAY
FAN RELAY
HEAT RELAY
C
R
L2
L1 (HOT)
Typical 2H/2C system: 1 transformer Typical 2H/2C system: 2 transformer
COMPRESSOR
RELAY
FAN RELAY
HEAT RELAY
4
2
1
C
R
L2
L1 (HOT)
1
C
R
L2
L1 (HOT)
REMOVE JUMPER
Typical heat-only system
HEAT RELAY
4
2
1
C
R
L2
L1 (HOT)
FAN RELAY
4
2
1
C
R
L2
L1 (HOT)
COMPRESSOR
RELAY
Typical cool-only system
Typical heat-only system with fan
FAN RELAY
4
2
1
C
R
L2
L1 (HOT)
HEAT RELAY
Typical 3H/2C heat pump system
FAN RELAY
1
C
R
L2
L1 (HOT)
COMPRESSOR
RELAY
COOL CHANGE OVER
VALVE
4
O
B
COMPRESSOR
RELAY 2
HEAT RELAY 2
COMPRESSOR
RELAY 2
HEAT RELAY 2
HEAT CHANGE OVER
VALVE
COMPRESSOR
RELAY 2
AUXILIARY
2
3
NOTE: In many heat pump systems with no emergency heat relay a jumper can be installed between E and W2.
WIRING
EMERGENCY HEAT
RELAY

6
Replacement Thermostat Wiring
1.
2.
3.
If you are replacing a thermostat, make note
of the terminal connections on the thermo-
stat that is being replaced. In some cases the
wiring connections will not be color-coded.
For example, the green wire may not be
connected to the G terminal.
Loosen the terminal block screws. Insert
wires then retighten terminal block screws.
Place nonammable insulation into wall
opening to prevent drafts.
This thermostat requires a 24V Common Wire
to the C terminal.
All components of the control
system and the thermostat
installation must conform to
Class II circuits per the NEC
Code.
Use shielded or non-shielded
18-22 gauge thermostat wire.
WIRING
Wire Specications
Warning
EMHEAT EMHEAT
DO NOT OVER TIGHTEN TERMINAL
BLOCKS. CAN CAUSE DISTORTIONS
AND MALFUNCTIONS.
Warning
Note: Devices such as a float switch that mechanically break circuits should
be installed so that they break the control wire (Y) not the power (R).
Interrupting the power circuit will shut off power to the thermostat completely
and not allow it to operate.

7
Filter
Change
Reminder
This feature will
ash“FILT”in the
display after the
elapsed run time
to remind the user
to change the
lter. A setting of
“OFF”will disable
this feature.
You can adjust the
lter change
reminder from
“OFF”to 2000
hours of runtime in
50 hour
increments.
OFF
LCD Will Show
Adjustment Options
This feature allows
the installer to
change the
calibration of the
room temperature
display. For example,
if the thermostat
reads 70° and you
would like it to read
72° then select +2.
Room
Temperature
Calibration
You can adjust the
room temperature
display to read -4°F to
+4°F above or below
the factory calibrated
reading.
0 ºF
Minimum
Compressor On
Time
This feature allows the
installer to select the
minimum run time for
the compressor. For
example, a setting of 4
will force the
compressor to run for
at least 4 minutes
every time the
compressor turns on,
regardless of the room
temperature.
You can select the
minimum compressor
run time from“OFF”,
“3”,“4”, or“5”minutes.
If 3, 4, or 5 is selected,
the compressor will run
for at least the selected
time before turning o.
OFF
Compressor
Short Cycle
Delay
Tech Setup Steps
The compressor short
cycle delay protects
the compressor from
“short cycling”. This
feature will not allow
the compressor to be
turned on for 5
minutes after it was
last turned o.
Selecting “ON”will not
allow the compressor
to be turned on for 5
minutes after the last
time the compressor
was on. Select“OFF”to
remove this delay.
ON
Cooling
Swing
The swing setting
often called“cycle
rate”,“dierential”or
“anticipation”is
adjustable. A smaller
swing setting will
cause more frequent
cycles and a larger
swing setting will
cause fewer cycles.
The heating swing
setting is adjustable
from 0.2°F to 2°F. For
example: A swing
setting of 0.5°F will
turn the heating on at
approximately 0.5°F
below the setpoint and
turn the heating o at
approximately 0.5°F
above the setpoint.
The cooling swing
setting is adjustable
from 0.2°F to 2°F.
For example: A swing
setting of 0.5°F will
turn the cooling on at
approximately 0.5°F
above the setpoint
and turn the cooling
o at approximately
0.5°F below the
setpoint.
0.5 ºF 0.4 ºF
Heating
Swing
The swing setting
often called“cycle rate”,
“dierential”or
“anticipation”is
adjustable. A smaller
swing setting will
cause more frequent
cycles and a larger
swing setting will
cause fewer cycles.
TECH SETUP
STEPS CONTINUED
ON THE NEXT PAGE
Keypad
Lockout
Keypad lockout allows
you to congure the
thermostat so that
none or some of the
keys do not function.
OF = keypad lockout
has been disabled.
PA = partial keypad
lockout, which locks all
the keys except the
or keys.
FU = Full keypad
lockout, which locks
out all the keys.
See note below on
operation.
PA
Technician Setup Menu - System Operation
This thermostat has a technician setup menu
for easy installer conguration. To setup the
thermostat for your particular application:
1.
2.
Factory Default Setting
Congure the installer options as desired,
using the table below.
Use the or keys to
change settings and the PREV or NEXT key
to move from one step to another.
Note: Only press DONE key when you want
to exit the Technician Setup options.
Press DONE key to exit.
+ -
3.
Press MENU button.
TECHNICIAN SETUP MENU
Press and hold TECH
button for 3 seconds. This 3 second delay
is designed so that homeowners do not
accidentally access the installer settings. 4.
Note: The function of activating your Keypad Lockout choice takes place
after you have exited Tech Setup. If you do not perform this activation
procedure, all keys will function freely. To lock the keypad hold down the
and keys for 3 seconds.You will see a lock in the display. To unlock
the keypad hold down the and keys for 3 seconds.
OFF
se
filter 0000
next preV done RST
cal
0
CALIBRATE
NEXT preV done
F
OFF
MIN COMP ON TIME
NEXT preV done
ON
COMPRESSOR DELAY
NEXT preV done
C0 0F
COoling Swing
NEXT preV done
0.5
Heating swing
NEXT preV done
0.4
keypad lockout
NEXT preV done
pa

8
The second stage will turn on at 2x the swing setting. The second stage will turn off when
1x the swing is reached. For example, if the swing setting is .5 degrees for heating and the
thermostat is set at 70ºF, the first stage will turn on at approximately 69.5ºF. The second
stage will turn on at 69.0ºF. The second stage will turn off at 69.5ºF and the first will turn off
at 70.5ºF. If third stage is used, it will turn on at 3x the swing and turn off at approximately 2x the swing.
Swing Setting Tip
Heating
Temperature
Setpoint Limit
This feature allows
you to set a
maximum heat
setpoint value. The
setpoint tempera-
ture cannot be
raised above this
value.
Use the or
key to select
the maximum heat
setpoint.
Range 44ºF - 90ºF
90ºF
LCD Will Show
Adjustment Options
Tech Setup Steps (Continued from the previous page)
Factory Default Setting
Cooling
Temperature
Setpoint Limit
This feature allows
you to set a
minimum cool
setpoint value. The
setpoint tempera-
ture cannot be
lowered below this
value.
Use the or
key to select the
minimum cool
setpoint.
Range 44ºF - 90ºF
44ºF
ºF or ºC
This feature allows
you to display
temperatures in
either Fahrenheit
or Celsius.
ºF for Fahrenheit
ºC for Celsius
ºF
TECHNICIAN SETUP MENU
12 or 24
Hour Clock
Use the or
key to select 12 or
24 hour clock.
You can select
either a 12 or 24
hour clock setting.
12 Hour Clock
TECH SETUP
STEPS CONTINUED
ON THE NEXT PAGE
Program
Options
You can congure this
thermostat to have a
7 day program, a
5+1+1 program or
nonprogrammable.
Use the or
key to select 7d for 7
day, 5d for 5+1+1, or
0d for
nonprogrammable.
7d
HEAT SET LIMIT
NEXT preV done
HE 90
COOL SET LIMIT
NEXT preV done
c0 44
f or c set
NEXT preV done
80 44
F
F
CLOCK SET
NEXT preV done
12H
Fan
Operation
GAS
Select GAS for
systems that control
the fan during a call
for heat.
Select ELEC to have
the thermostat
control the fan
during a call for heat.
GAS
or
ELEC
FAN OPERATION
NEXT preV done
GAS
Morning
Recovery
Use the or
key to turn on or o.
OFF
This feature will start
heating early to bring
the building
temperature to its
programmed
setpoint by the
beginning of the time
period -
(WAKE, OCCUPIED).
MORNING recovery
NEXT preV done
OFF
program
NEXT preV done
5
Time Periods
4
You can congure
this thermostat to
have 2 or 4
programmable
time periods per
day.
2 time periods is
Occupied/Unoccupied
4 time periods are
Wake, Leave, Return
Sleep.
Use the or
key to select 2 or 4
time periods per day.
Time periods a day
NEXT preV done
4

Contractor Call Number Note: Use the plus or minus key to select the desired number and the FAN
or SYSTEM key to move from one character to another. If contractor Call Number is selected ON,
your phone number will show in the display if there has been a continuous call for heating or cooling
for 24 hours or if the light button is held down for 3 seconds. To remove the phone number from the
display, hold the light button down for 3 seconds.
9
LCD Will Show
Adjustment Options
Factory Default Setting
TECHNICIAN SETUP MENU
TECH SETUP
STEPS CONTINUED
ON THE NEXT PAGE
Tech Setup Steps (Continued from the previous page)
AUTO
AUTO
l
NEXT preV done
off
CONTRACTOR NUMBER
NEXT preV done
0000000000
NEXT preV done
call
on
NEXT preV done
beep
off
NEXT preV done
heat pump
5 y5
se
cool off heat
off
AG
GAS AUX heat
Next preV doneNext preV done
2H2c
heat cool stgs
Next preV done
NEXT preV done
Contractor
Call Number Beep Heat Pump System
Set
Gas Auxiliary
for Heat Pump
When any key is
pressed an audible
beep will sound.
You can choose
ON or OFF
If ON is selected
the beep will
sound.
If OFF is selected,
there is no sound.
OFF
When turned on
the thermostat
will operate a
heat pump.
1. EM.Heat will
show as an option
in the system
switch.
2. Y will be first
stage of heat &
cool, W/E will be
emergency heat
relay & W2 will
be auxiliary heat
OFF configures
the thermostat
for non heat
pump systems.
ON configures
the thermostat
for heat pump
systems.
Heat - Off - Cool
Set system switch for
your application.
COOL
HEAT
AUTO (auto changeover)
EHT (emergency heat-
heat pump only)
Use the or
key until the desired
application is
flashing.
OFF
This option will turn
the heat pump off 45
seconds after the
auxiliary heat relay
turns on.
For 2 heat
applications, the first stage
will turn off 45 seconds
after the auxiliary stage
turns on.
For 3 heat
applications, the first
and second stage will
turn off 45 seconds
after the auxiliary
stage turns on.
For heat pump
systems that are
“dual fuel” (use a gas
furnace for auxiliary
stage heat) you can
turn this feature on
to turn off the heat
pump when the
auxiliary stage of
heating has been
called for.
Allows you to put
your phone
number in the
display.
You can choose
ON or OFF
See note below on
operation.
If selectedON , you
will see the input
screen after pressing
next step.
OFF
Display
Light
The display light can
be configured to
operate 3 different
ways. To come on
only when the Light
Key is pressed, when
Any Key is pressed,
or stay on ALL of
the time.
You can configure this
thermostat to operate up
to a 2 heat/2 cool
conventional, or up to
a 4 heat/2 Cool heat
pump system.
First set the heat stages
then set the cool stages
Stages of Heat will be
flashing first. Set your
number of heat stages
then press Next. Stages
of cool will now be
flashing. Set your
number of cool stages.
See page 6 for terminal
references.
Stages of Heat
and Cool
2 Stages
‘OFF’ - Only light
key on
‘AUTO’- Any key ON
‘ON’ - Always On
ON
Pre Occupancy
Fan
The pre occupancy
fan settings will
energize the fan
before the occupied
time to provide
ventilation prior to
scheduled
occupancy.
This feature only
shows if technician
setup step for time
periods is set to
2C or 4C.
You can select the
pre occupancy fan
from OFF, 1, 2, or
3 hours.
If 1, 2, or 3 is
selected, the fan
will turn on that
many hours prior
to the scheduled
occupied time
period.
OFF
PRE OCCUPY FAN
COOL HEAT
HEAT- (heat only)
COOL- (cool only)
COOL HEAT AUTO -
(auto changeover)
(heat pump)
COOL HEAT EHT
COOL HEAT EHT AUTO

10
TECHNICIAN SETUP MENU
Adjustment Options
Factory Default Settings
Tech Setup Steps (Continued from the previous page)
LCD Will Show
TECH SETUP
STEPS CONTINUED
ON THE NEXT PAGE
OFF
Cooling Fan
Delay
The cooling fan
delay setting will
delay the fan from
coming on in cool
mode and keep
running after the
compressor shuts
o for a short time
to save energy in
some systems.
You can select the
Cooling Fan Delay
from OFF, 15, 30, 60
or 90 Seconds.
off
cool FAN DELAY
Next preV done
off
iaq mode cycles
Next preV done
10
iaq mode cycles
Next preV done
OFF
Satisfy
Setpoint
This feature allows
the thermostat to
keep multiple
stages of heat or
cool energized until
setpoint is satised.
Use the or
key to turn on or
o.
off
satisfy setpoint
Next preV done
off
Staging delay
Next preV done
off
hum pad 0415
Next preV done
off
uv lamp 02288
Next preV done
off
IAQ CELL 02288
Next preV done RST
This Programmable/Selectable mode will operate the fan 1-4 cycles per
hour, 1-45 minutes per cycle. Once programmed in Tech Setup, to enable
this mode select ‘IAQ’ with the Fan Key. Or you can disable the mode by
selecting ‘ON’ or ‘AUTO’ with the Fan Key.
A Note about IAQ Mode:
2nd
IAQ Mode Cycle
This feature will
congure the fan to
run a selected
number of cycles
“per hour”.
Note:This mode can
be enabled or
disabled at anytime
during normal
operation, by
selecting IAQ mode
with the fan key.
Select OFF, 1,2,3 or 4
with the or
keys.
This sets the number
of cycles per hour
that the IAQ fan
mode will operate.
OFF 1
IAQ Mode Minutes
This allows you to
select the minimum
number of minutes
that the fan will run
“Per Cycle“. The
thermostat will keep
track of fan run time
from normal Heat
and Cool operation.
If additional fan
runtime is needed,
the thermostat will
run the fan to satisfy
the IAQ mode
minutes.
Select 1, 5, 10 ,15
,20 ,30 or 45
minutes.
When IAQ fan mode
is enabled, it will
ensure the fan runs
at least the selected
number of minutes
per IAQ mode cycle.
OFF
Staging Delay
This feature allows a
delay to occur when
a second and third
stage is needed.This
allows the previous
stage extra time to
satisfy setpoint.
Use the or
key to selectYES, 5,
10, 15, 30, 45, 60, or
90 minutes.
OFF
Humidity Pad
Reminder
This will remind the
user to change the
humidity pad.
Use the or
key to select OFF,
600, 1000, 1500,
2000. These
represent hours of
heat operation.
UV Lamp
Reminder
Will remind the user
to change the UV
light bulb.
Use the or
key to select OFF,
1YEAR, 2YEAR.
OFF
IAQ Cell
Reminder
Will remind the user
to change the PHI
Cell after 25,000 hrs.
Use the or
key to select OFF,
250. (Stands for
25000 hours)
OFF

TECHNICIAN SETUP MENU - Wi-Fi
Adjustment Options
LCD Will Show
Wi-Fi Tech Steps
11
Factory Default Settings
Firmware
Version SSID Number
This step shows the
SSID number of
the thermostat.
NEXT Done Tech
Press NEXT button
to move to next
step. Press DONE
button to exit.
Press and holdTECH
button to enter
ADVANCED TECH
STEPS.
Technician Setup Menu - Wi-Fi
These steps/options are only used for trouble
shooting, re-setting or restoring to default the
Wi-Fi settings of the thermostat. They are not
needed for installation or initial setup.
1.
2.
At this point press and hold TECH to enter
advanced settings.
4.
Press MENU button.
Press WIFI button.
This enters the 2 informational steps. 3. Press NEXT to move from one to the other.
This step shows the
version of rmware
that is installed on
the thermostat.
Wi-Fi AdvancedTech Steps
Provisioning
Reset
Wi-Fi Module
Reset
This step allows you
to re-connect the
thermostat to a
dierent Home
Wi-Fi network.
This step resets the
communication of
the Wi-Fi module.
Factory Default
Reset
This step resets all
Wi-Fi settings to
factory default.
NEXT YES Exit
Press NEXT button
to move to next
step. Press DONE
button to exit.
Press and holdTECH
button to enter
ADVANCED TECH
STEPS.
Press NEXT button
to move to next
step. Press DONE
button to exit.
Press and holdTECH
button to enter
ADVANCED TECH
STEPS.
Press NEXT button
to move to next
step. Press DONE
button to exit.
Press and holdTECH
button to enter
ADVANCED TECH
STEPS.
Press NEXT button
to move to next
step. Press DONE
button to exit.
Press and holdTECH
button to enter
ADVANCED TECH
STEPS.
NEXT Done Tech
SSID VER
NEXT YES Exit NEXT YES Exit

12
PROGRAMMING THE THERMOSTAT
Set Time
Follow the steps below to set the day of the week and current time:
Press MENU
Press TIME
Day of the week will be flashing. Use the or key to select the current
day of the week.
Press NEXT
The current hour is flashing. Use the or key to select the current hour.
When using 12-hour time, make sure the correct a.m. or p.m. choice is selected.
Press NEXT
Minutes are now flashing. Use the or key to select current minutes.
Press DONE when completed
1.
2.
3.
4.
5.
6.
7.
8.
two

13
PROGRAMMING THE THERMOSTAT
Occupied
Unoccupied
Occupied
Unoccupied
Occupied
Unoccupied

Sunday time

FEATURES & SPECIFICATIONS
16
The display range of temperature
The control range of temperature
Load rating
Display accuracy
Swing (cycle rate or dierential)
Power source
Operating ambient
Operating humidity
Dimensions of thermostat
41ºF to 95ºF (5ºC to 35ºC)
44ºF to 90ºF (7ºC to 32ºC)
1 amp per terminal, 1.5 amp maximum all terminals combined
± 1ºF
Heating is adjustable from 0.2ºF to 2.0ºF
Cooling is adjustable from 0.2ºF to 2.0ºF
18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire (common wire)
32ºF to +105ºF (0º to +41ºC)
90% non-condensing maximum
4.8 ”W x 4.4”H x 1”D
Specications
Temporary and Permanent Hold Feature
Temporary hold: The thermostat will display
HOLD and RUN on the bottom of
your screen when you press the or
key. If you do nothing, the temperature will
remain at this setpoint temporarily for 4
hours. Your program setpoint will then
replace your temporary setpoint.
Permanent hold: If you press HOLD key at
the bottom of your screen, you will see HOLD
appear below the setpoint temperature in the
display. The thermostat will now permanently
stay at this setpoint and can be adjusted
using the or keys.
To return to program: Press the RUN
key at the bottom of your screen to exit
either temporary or permanent hold.
Filter Change and other Reminders
If your installing contractor has configured
the thermostat to remind you when the air
filter needs changed, you will see FILT in the
display when your air filter needs changed.
FILT will be shown in the display after your
system has run long enough to require an air
filter change.
Resetting the filter change reminder: When
FILT reminder is displayed, you should
change your air filter and reset the reminder
by holding down the 2nd button from the
left side of the thermostat for 3 seconds.
This thermostat also has other maintenance
reminders (Humidity Pad, UV lamp, and IAQ
Cell), that are reset with the same procedure.
Wi-Fi
Frequencey Range
Wi-Fi Module
2.4 GHz ISM radio band
Supporting 802.11 B/G/N Standards